#pragma阻止编译器警告_[warning] non-static data member initializers only

作者：小蓝xlanll | 2024-03-27 13:40:31

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[warning] non-static data member initializers only available with -std=c++11

在xcode6中，如果使用类似以下代码传入nil,会被xcode提示错误

[dataImage setData:nil];

编译器提示：Null passed to a callee that requires a non-null argument

这是因为在Xcode6.3引入了一个Objective-C的新特性:nullability annotations.

我现在使用的是Xcode7.2，在6.3中，其被认为是警告，但在目前的版本中，它被认为是error，所以必须改掉。

所以这里引入了#pragma

如下：

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Wnonnull"

[dataImage setData:nil];

#pragma clang diagnostic pop

以下是相关参数：

Semantic Warnings

Warning	Message
`-WCFString-literal`	input conversion stopped due to an input byte that does not belong to the input codeset UTF-8
`-WNSObject-attribute`	__attribute ((NSObject)) may be put on a typedef only, attribute is ignored
`-Wabstract-vbase-init`	initializer for virtual base class %0 of abstract class %1 will never be used
`-Waddress-of-array-temporary`	pointer is initialized by a temporary array, which will be destroyed at the end of the full-expression
`-Warc-maybe-repeated-use-of-weak`	"weak %select{variable\|property\|implicit property\|instance variable}0 %1 may be accessed multiple times in this %select{function\|method\|block\|lambda}2 and may be unpredictably set to nil assign to a strong variable to keep the object alive
`-Warc-non-pod-memaccess`	%select{destination for\|source of}0 this %1 call is a pointer to ownership-qualified type %2
`-Warc-performSelector-leaks`	performSelector may cause a leak because its selector is unknown
`-Warc-repeated-use-of-weak`	"weak %select{variable\|property\|implicit property\|instance variable}0 %1 is accessed multiple times in this %select{function\|method\|block\|lambda}2 but may be unpredictably set to nil assign to a strong variable to keep the object alive
`-Warc-retain-cycles`	capturing %0 strongly in this block is likely to lead to a retain cycle
`-Warc-unsafe-retained-assign`	assigning retained object to unsafe property object will be released after assignment
`-Warc-unsafe-retained-assign`	assigning %select{array literal\|dictionary literal\|numeric literal\|boxed expression\|should not happen\|block literal}0 to a weak %select{property\|variable}1 object will be released after assignment
`-Warc-unsafe-retained-assign`	assigning retained object to %select{weak\|unsafe_unretained}0 %select{property\|variable}1 object will be released after assignment
`-Warray-bounds`	array index %0 is past the end of the array (which contains %1 element%s2)
`-Warray-bounds`	array index %0 is before the beginning of the array
`-Warray-bounds`	'static' has no effect on zero-length arrays
`-Warray-bounds`	array argument is too small contains %0 elements, callee requires at least %1
`-Warray-bounds-pointer-arithmetic`	the pointer incremented by %0 refers past the end of the array (that contains %1 element%s2)
`-Warray-bounds-pointer-arithmetic`	the pointer decremented by %0 refers before the beginning of the array
`-Wassign-enum`	integer constant not in range of enumerated type %0
`-Watomic-property-with-user-defined-accessor`	writable atomic property %0 cannot pair a synthesized %select{getter\|setter}1 with a user defined %select{getter\|setter}2
`-Wattributes`	unknown attribute %0 ignored
`-Wauto-var-id`	'auto' deduced as 'id' in declaration of %0
`-Wavailability`	unknown platform %0 in availability macro
`-Wavailability`	overriding method %select{introduced after\|deprecated before\|obsoleted before}0 overridden method on %1 (%2 vs. %3)
`-Wavailability`	availability does not match previous declaration
`-Wavailability`	overriding method cannot be unavailable on %0 when its overridden method is available
`-Wavailability`	feature cannot be %select{introduced\|deprecated\|obsoleted}0 in %1 version %2 before it was %select{introduced\|deprecated\|obsoleted}3 in version %4 attribute ignored
`-Wbad-function-cast`	cast from function call of type %0 to non-matching type %1
`-Wbitfield-constant-conversion`	implicit truncation from %2 to bitfield changes value from %0 to %1
`-Wbitwise-op-parentheses`	'&' within '\|'
`-Wbool-conversion`	"initialization of pointer of type %0 to null from a constant boolean " "expression
`-Wbridge-cast`	%0 cannot bridge to %1
`-Wbridge-cast`	%0 bridges to %1, not %2
`-Wbuiltin-requires-header`	declaration of built-in function '%0' requires inclusion of the header stdio.h
`-Wbuiltin-requires-header`	declaration of built-in function '%0' requires inclusion of the header setjmp.h
`-Wbuiltin-requires-header`	declaration of built-in function '%0' requires inclusion of the header ucontext.h
`-Wc++-compat`	%select{\|empty }0%select{struct\|union}1 has size 0 in C, %select{size 1\|non-zero size}2 in C++
`-Wc++11-compat`	explicit instantiation cannot be 'inline'
`-Wc++11-compat`	explicit instantiation of %0 must occur at global scope
`-Wc++11-compat`	explicit instantiation of %0 not in a namespace enclosing %1
`-Wc++11-compat`	explicit instantiation of %q0 must occur in namespace %1
`-Wc++11-narrowing`	constant expression evaluates to %0 which cannot be narrowed to type %1 in C++11
`-Wc++11-narrowing`	type %0 cannot be narrowed to %1 in initializer list in C++11
`-Wc++11-narrowing`	non-constant-expression cannot be narrowed from type %0 to %1 in initializer list in C++11
`-Wc++98-c++11-compat`	type definition in a constexpr %select{function\|constructor}0 is incompatible with C++ standards before C++1y
`-Wc++98-c++11-compat`	use of this statement in a constexpr %select{function\|constructor}0 is incompatible with C++ standards before C++1y
`-Wc++98-c++11-compat`	init-captures.def warn_cxx11_compat_init_capture : Warning "initialized lambda captures are incompatible with C++ standards " "before C++1y
`-Wc++98-c++11-compat`	variable declaration in a constexpr %select{function\|constructor}0 is incompatible with C++ standards before C++1y
`-Wc++98-c++11-compat`	constexpr function with no return statements is incompatible with C++ standards before C++1y
`-Wc++98-c++11-compat`	multiple return statements in constexpr function is incompatible with C++ standards before C++1y
`-Wc++98-c++11-compat`	variable templates are incompatible with C++ standards before C++1y
`-Wc++98-compat`	substitution failure due to access control is incompatible with C++98
`-Wc++98-compat`	%select{anonymous struct\|union}0 member %1 with a non-trivial %select{constructor\|copy constructor\|move constructor\|copy assignment operator\|move assignment operator\|destructor}2 is incompatible with C++98
`-Wc++98-compat`	enumeration type in nested name specifier is incompatible with C++98
`-Wc++98-compat`	static data member %0 in union is incompatible with C++98
`-Wc++98-compat`	default template arguments for a function template are incompatible with C++98
`-Wc++98-compat`	scalar initialized from empty initializer list is incompatible with C++98
`-Wc++98-compat`	befriending %1 without '%select{struct\|interface\|union\|class\|enum}0' keyword is incompatible with C++98
`-Wc++98-compat`	use of null pointer as non-type template argument is incompatible with C++98
`-Wc++98-compat`	friend declaration naming a member of the declaring class is incompatible with C++98
`-Wc++98-compat`	non-class friend type %0 is incompatible with C++98
`-Wc++98-compat`	befriending enumeration type %0 is incompatible with C++98
`-Wc++98-compat`	use of non-static data member %0 in an unevaluated context is incompatible with C++98
`-Wc++98-compat`	friend function %0 would be implicitly redefined in C++98
`-Wc++98-compat`	%select{class template\|class template partial\|variable template\|variable template partial\|function template\|member function\|static data member\|member class\|member enumeration}0 specialization of %1 outside namespace %2 is incompatible with C++98
`-Wc++98-compat`	reference initialized from initializer list is incompatible with C++98
`-Wc++98-compat`	redundant parentheses surrounding address non-type template argument are incompatible with C++98
`-Wc++98-compat`	initialization of initializer_list object is incompatible with C++98
`-Wc++98-compat`	use of 'template' keyword outside of a template is incompatible with C++98
`-Wc++98-compat`	non-type template argument referring to %select{function\|object}0 %1 with internal linkage is incompatible with C++98
`-Wc++98-compat`	use of 'typename' outside of a template is incompatible with C++98
`-Wc++98-compat`	passing object of trivial but non-POD type %0 through variadic %select{function\|block\|method\|constructor}1 is incompatible with C++98
`-Wc++98-compat`	goto would jump into protected scope in C++98
`-Wc++98-compat`	constructor call from initializer list is incompatible with C++98
`-Wc++98-compat`	'auto' type specifier is incompatible with C++98
`-Wc++98-compat`	delegating constructors are incompatible with C++98
`-Wc++98-compat`	'constexpr' specifier is incompatible with C++98
`-Wc++98-compat`	inheriting constructors are incompatible with C++98
`-Wc++98-compat`	explicit conversion functions are incompatible with C++98
`-Wc++98-compat`	switch case would be in a protected scope in C++98
`-Wc++98-compat`	'%0' type specifier is incompatible with C++98
`-Wc++98-compat`	indirect goto might cross protected scopes in C++98
`-Wc++98-compat-pedantic`	cast between pointer-to-function and pointer-to-object is incompatible with C++98
`-Wc++98-compat-pedantic`	implicit conversion from array size expression of type %0 to %select{integral\|enumeration}1 type %2 is incompatible with C++98
`-Wcast-align`	cast from %0 to %1 increases required alignment from %2 to %3
`-Wcast-of-sel-type`	cast of type %0 to %1 is deprecated use sel_getName instead
`-Wchar-subscripts`	array subscript is of type 'char'
`-Wconditional-uninitialized`	variable %0 may be uninitialized when %select{used here\|captured by block}1
`-Wconstant-logical-operand`	use of logical '%0' with constant operand
`-Wconstexpr-not-const`	'constexpr' non-static member function will not be implicitly 'const' in C++1y add 'const' to avoid a change in behavior
`-Wconsumed`	state of variable '%0' must match at the entry and exit of loop
`-Wconsumed`	parameter '%0' not in expected state when the function returns: expected '%1', observed '%2'
`-Wconsumed`	argument not in expected state expected '%0', observed '%1'
`-Wconsumed`	invalid invocation of method '%0' on a temporary object while it is in the '%1' state
`-Wconsumed`	return state set for an unconsumable type '%0'
`-Wconsumed`	consumed analysis attribute is attached to member of class '%0' which isn't marked as consumable
`-Wconsumed`	invalid invocation of method '%0' on object '%1' while it is in the '%2' state
`-Wconsumed`	return value not in expected state expected '%0', observed '%1'
`-Wconversion`	implicit conversion discards imaginary component: %0 to %1
`-Wconversion`	non-type template argument with value '%0' converted to '%1' for unsigned template parameter of type %2
`-Wconversion`	implicit conversion loses floating-point precision: %0 to %1
`-Wconversion`	implicit conversion loses integer precision: %0 to %1
`-Wconversion`	non-type template argument value '%0' truncated to '%1' for template parameter of type %2
`-Wconversion`	implicit conversion turns vector to scalar: %0 to %1
`-Wconversion`	implicit conversion turns floating-point number into integer: %0 to %1
`-Wcovered-switch-default`	default label in switch which covers all enumeration values
`-Wcustom-atomic-properties`	atomic by default property %0 has a user defined %select{getter\|setter}1 (property should be marked 'atomic' if this is intended)
`-Wdangling-field`	initializing pointer member %0 with the stack address of parameter %1
`-Wdangling-field`	binding reference %select{\|subobject of }1member %0 to a temporary value
`-Wdangling-field`	binding reference member %0 to stack allocated parameter %1
`-Wdangling-initializer-list`	array backing the initializer list will be destroyed at the end of %select{the full-expression\|the constructor}0
`-Wdelete-incomplete`	deleting pointer to incomplete type %0 may cause undefined behavior
`-Wdelete-non-virtual-dtor`	delete called on %0 that is abstract but has non-virtual destructor
`-Wdelete-non-virtual-dtor`	delete called on %0 that has virtual functions but non-virtual destructor
`-Wdeprecated`	access declarations are deprecated use using declarations instead
`-Wdeprecated`	definition of implicit copy %select{constructor\|assignment operator}1 for %0 is deprecated because it has a user-declared %select{copy %select{assignment operator\|constructor}1\|destructor}2
`-Wdeprecated`	dynamic exception specifications are deprecated
`-Wdeprecated-increment-bool`	incrementing expression of type bool is deprecated
`-Wdeprecated-objc-isa-usage`	assignment to Objective-C's isa is deprecated in favor of object_setClass()
`-Wdeprecated-objc-isa-usage`	direct access to Objective-C's isa is deprecated in favor of object_getClass()
`-Wdeprecated-objc-pointer-introspection`	bitmasking for introspection of Objective-C object pointers is strongly discouraged
`-Wdeprecated-objc-pointer-introspection-performSelector`	warn_objc_pointer_masking.Text
`-Wdeprecated-writable-strings`	dummy warning to enable -fconst-strings
`-Wdirect-ivar-access`	instance variable %0 is being directly accessed
`-Wdistributed-object-modifiers`	conflicting distributed object modifiers on return type in implementation of %0
`-Wdistributed-object-modifiers`	conflicting distributed object modifiers on parameter type in implementation of %0
`-Wdivision-by-zero`	division by zero is undefined
`-Wdivision-by-zero`	remainder by zero is undefined
`-Wdocumentation`	parameter '%0' not found in the function declaration
`-Wdocumentation`	not a Doxygen trailing comment
`-Wduplicate-enum`	element %0 has been implicitly assigned %1 which another element has been assigned
`-Wduplicate-method-match`	multiple declarations of method %0 found and ignored
`-Wdynamic-class-memaccess`	%select{destination for\|source of\|first operand of\|second operand of}0 this %1 call is a pointer to dynamic class %2 vtable pointer will be %select{overwritten\|copied\|moved\|compared}3
`-Wempty-body`	switch statement has empty body
`-Wempty-body`	for loop has empty body
`-Wempty-body`	if statement has empty body
`-Wempty-body`	range-based for loop has empty body
`-Wempty-body`	while loop has empty body
`-Wenum-compare`	comparison of two values with different enumeration types%diff{ ($ and $)\|}0,1
`-Wenum-conversion`	implicit conversion from enumeration type %0 to different enumeration type %1
`-Wexit-time-destructors`	declaration requires an exit-time destructor
`-Wexplicit-ownership-type`	method parameter of type %0 with no explicit ownership
`-Wextern-c-compat`	%select{\|empty }0%select{struct\|union}1 has size 0 in C, %select{size 1\|non-zero size}2 in C++
`-Wextern-initializer`	'extern' variable has an initializer
`-Wfloat-equal`	comparing floating point with == or != is unsafe
`-Wformat`	"data argument position '%0' exceeds the number of data arguments (%1)
`-Wformat`	position arguments in format strings start counting at 1 (not 0)
`-Wformat`	invalid position specified for %select{field width\|field precision}0
`-Wformat`	cannot mix positional and non-positional arguments in format string
`-Wformat`	values of type '%0' should not be used as format arguments add an explicit cast to %1 instead
`-Wformat`	format specifies type %0 but the argument has type %1
`-Wformat`	zero field width in scanf format string is unused
`-Wformat`	no closing ']' for '%%[' in scanf format string
`-Wformat`	format string should not be a wide string
`-Wformat`	format string contains '\\0' within the string body
`-Wformat`	'%select{\|.}0' specified field %select{width\|precision}0 is missing a matching 'int' argument
`-Wformat`	field %select{width\|precision}0 should have type %1, but argument has type %2
`-Wformat`	%select{field width\|precision}0 used with '%1' conversion specifier, resulting in undefined behavior
`-Wformat`	format string missing
`-Wformat`	incomplete format specifier
`-Wformat`	flag '%0' results in undefined behavior with '%1' conversion specifier
`-Wformat`	flag '%0' is ignored when flag '%1' is present
`-Wformat`	more '%%' conversions than data arguments
`-Wformat`	length modifier '%0' results in undefined behavior or no effect with '%1' conversion specifier
`-Wformat-extra-args`	data argument not used by format string
`-Wformat-invalid-specifier`	invalid conversion specifier '%0'
`-Wformat-nonliteral`	format string is not a string literal
`-Wformat-security`	format string is not a string literal (potentially insecure)
`-Wformat-zero-length`	format string is empty
`-Wgcc-compat`	GCC does not allow the 'cleanup' attribute argument to be anything other than a simple identifier
`-Wglobal-constructors`	declaration requires a global constructor
`-Wglobal-constructors`	declaration requires a global destructor
`-Wgnu-conditional-omitted-operand`	use of GNU ?: conditional expression extension, omitting middle operand
`-Wheader-hygiene`	using namespace directive in global context in header
`-Widiomatic-parentheses`	using the result of an assignment as a condition without parentheses
`-Wignored-attributes`	'malloc' attribute only applies to functions returning a pointer type
`-Wignored-attributes`	%0 attribute only applies to %select{functions\|unions\|variables and functions\|functions and methods\|parameters\|functions, methods and blocks\|functions, methods, and classes\|functions, methods, and parameters\|classes\|variables\|methods\|variables, functions and labels\|fields and global variables\|structs\|variables, functions and tag types\|thread-local variables\|variables and fields\|variables, data members and tag types\|types and namespaces\|Objective-C interfaces}1
`-Wignored-attributes`	'%0' attribute cannot be specified on a definition
`-Wignored-attributes`	__weak attribute cannot be specified on an automatic variable when ARC is not enabled
`-Wignored-attributes`	Objective-C GC does not allow weak variables on the stack
`-Wignored-attributes`	__weak attribute cannot be specified on a field declaration
`-Wignored-attributes`	attribute %0 cannot be applied to %select{functions\|Objective-C method}1 without return value
`-Wignored-attributes`	attribute declaration must precede definition
`-Wignored-attributes`	attribute %0 is ignored, place it after \"%select{class\|struct\|union\|interface\|enum}1\" to apply attribute to type declaration
`-Wignored-attributes`	__declspec attribute %0 is not supported
`-Wignored-attributes`	attribute %0 ignored, because it cannot be applied to a type
`-Wignored-attributes`	attribute %0 after definition is ignored
`-Wignored-attributes`	%0 attribute ignored
`-Wignored-attributes`	'sentinel' attribute only supported for variadic %select{functions\|blocks}0
`-Wignored-attributes`	'sentinel' attribute requires named arguments
`-Wignored-attributes`	'%0' only applies to %select{function\|pointer\|Objective-C object or block pointer}1 types type here is %2
`-Wignored-attributes`	'nonnull' attribute applied to function with no pointer arguments
`-Wignored-attributes`	%0 attribute can only be applied to instance variables or properties
`-Wignored-attributes`	ibaction attribute can only be applied to Objective-C instance methods
`-Wignored-attributes`	%0 calling convention ignored on variadic function
`-Wignored-attributes`	%0 only applies to variables with static storage duration and functions
`-Wignored-attributes`	%0 attribute argument not supported: %1
`-Wignored-attributes`	#pramga ms_struct can not be used with dynamic classes or structures
`-Wignored-attributes`	transparent union definition must contain at least one field transparent_union attribute ignored
`-Wignored-attributes`	first field of a transparent union cannot have %select{floating point\|vector}0 type %1 transparent_union attribute ignored
`-Wignored-attributes`	'gnu_inline' attribute requires function to be marked 'inline', attribute ignored
`-Wignored-attributes`	calling convention %0 ignored for this target
`-Wignored-attributes`	transparent_union attribute can only be applied to a union definition attribute ignored
`-Wignored-attributes`	%select{alignment\|size}0 of field %1 (%2 bits) does not match the %select{alignment\|size}0 of the first field in transparent union transparent_union attribute ignored
`-Wignored-attributes`	attribute %0 is already applied
`-Wignored-attributes`	%0 attribute ignored for field of type %1
`-Wignored-attributes`	%0 attribute ignored when parsing type
`-Wignored-attributes`	%0 attribute only applies to %select{functions\|methods\|properties}1 that return %select{an Objective-C object\|a pointer\|a non-retainable pointer}2
`-Wignored-attributes`	%0 attribute only applies to %select{Objective-C object\|pointer}1 parameters
`-Wignored-attributes`	attribute %0 is already applied with different parameters
`-Wignored-attributes`	unknown visibility %0
`-Wignored-qualifiers`	"'%0' type qualifier%s1 on return type %plural{1:has\|:have}1 no effect
`-Wignored-qualifiers`	ARC %select{unused\|__unsafe_unretained\|__strong\|__weak\|__autoreleasing}0 lifetime qualifier on return type is ignored
`-Wimplicit-atomic-properties`	property is assumed atomic by default
`-Wimplicit-atomic-properties`	property is assumed atomic when auto-synthesizing the property
`-Wimplicit-fallthrough`	fallthrough annotation in unreachable code
`-Wimplicit-fallthrough`	unannotated fall-through between switch labels
`-Wimplicit-fallthrough`	fallthrough annotation does not directly precede switch label
`-Wimplicit-function-declaration`	implicit declaration of function %0
`-Wimplicit-function-declaration`	use of unknown builtin %0
`-Wimplicit-retain-self`	"block implicitly retains 'self' explicitly mention 'self' to indicate this is intended behavior
`-Wincompatible-library-redeclaration`	incompatible redeclaration of library function %0
`-Wincomplete-implementation`	method definition for %0 not found
`-Winherited-variadic-ctor`	inheriting constructor does not inherit ellipsis
`-Winitializer-overrides`	subobject initialization overrides initialization of other fields within its enclosing subobject
`-Winitializer-overrides`	initializer overrides prior initialization of this subobject
`-Wint-to-pointer-cast`	cast to %1 from smaller integer type %0
`-Wint-to-void-pointer-cast`	cast to %1 from smaller integer type %0
`-Winvalid-iboutlet`	IBOutletCollection properties should be copy/strong and not assign
`-Winvalid-iboutlet`	%select{instance variable\|property}2 with %0 attribute must be an object type (invalid %1)
`-Winvalid-noreturn`	function %0 declared 'noreturn' should not return
`-Winvalid-noreturn`	function declared 'noreturn' should not return
`-Wlarge-by-value-copy`	return value of %0 is a large (%1 bytes) pass-by-value object pass it by reference instead ?
`-Wlarge-by-value-copy`	%0 is a large (%1 bytes) pass-by-value argument pass it by reference instead ?
`-Wliteral-conversion`	implicit conversion from %0 to %1 changes value from %2 to %3
`-Wliteral-range`	magnitude of floating-point constant too large for type %0 maximum is %1
`-Wliteral-range`	magnitude of floating-point constant too small for type %0 minimum is %1
`-Wlogical-not-parentheses`	logical not is only applied to the left hand side of this comparison
`-Wlogical-op-parentheses`	'&&' within '\|\|'
`-Wloop-analysis`	variable%select{s\| %1\|s %1 and %2\|s %1, %2, and %3\|s %1, %2, %3, and %4}0 used in loop condition not modified in loop body
`-Wloop-analysis`	variable %0 is %select{decremented\|incremented}1 both in the loop header and in the loop body
`-Wmethod-signatures`	conflicting parameter types in implementation of %0: %1 vs %2
`-Wmethod-signatures`	conflicting return type in implementation of %0: %1 vs %2
`-Wmicrosoft`	extra qualification on member %0
`-Wmismatched-method-attributes`	attributes on method implementation and its declaration must match
`-Wmismatched-parameter-types`	conflicting parameter types in implementation of %0%diff{: $ vs $\|}1,2
`-Wmismatched-return-types`	conflicting return type in implementation of %0%diff{: $ vs $\|}1,2
`-Wmissing-braces`	suggest braces around initialization of subobject
`-Wmissing-declarations`	'%0' ignored on this declaration
`-Wmissing-field-initializers`	missing field '%0' initializer
`-Wmissing-method-return-type`	method has no return type specified defaults to 'id'
`-Wmissing-noreturn`	%select{function\|method}0 %1 could be declared with attribute 'noreturn'
`-Wmissing-noreturn`	block could be declared with attribute 'noreturn'
`-Wmissing-prototypes`	no previous prototype for function %0
`-Wmissing-variable-declarations`	no previous extern declaration for non-static variable %0
`-Wmultiple-move-vbase`	defaulted move assignment operator of %0 will move assign virtual base class %1 multiple times
`-Wnested-anon-types`	anonymous types declared in an anonymous union/struct are an extension
`-Wno-typedef-redefinition`	Redefinition of typedef '%0' is a C11 feature
`-Wnon-literal-null-conversion`	"expression which evaluates to zero treated as a null pointer constant of " "type %0
`-Wnon-pod-varargs`	second argument to 'va_arg' is of ARC ownership-qualified type %0
`-Wnon-pod-varargs`	cannot pass %select{non-POD\|non-trivial}0 object of type %1 to variadic %select{function\|block\|method\|constructor}2 expected type from format string was %3
`-Wnon-pod-varargs`	second argument to 'va_arg' is of non-POD type %0
`-Wnon-pod-varargs`	cannot pass object of %select{non-POD\|non-trivial}0 type %1 through variadic %select{function\|block\|method\|constructor}2 call will abort at runtime
`-Wnon-virtual-dtor`	%0 has virtual functions but non-virtual destructor
`-Wnonnull`	null passed to a callee which requires a non-null argument
`-Wnull-arithmetic`	use of NULL in arithmetic operation
`-Wnull-arithmetic`	comparison between NULL and non-pointer %select{(%1 and NULL)\|(NULL and %1)}0
`-Wnull-dereference`	indirection of non-volatile null pointer will be deleted, not trap
`-Wobjc-autosynthesis-property-ivar-name-match`	autosynthesized property %0 will use %select{\|synthesized}1 instance variable %2, not existing instance variable %3
`-Wobjc-forward-class-redefinition`	redefinition of forward class %0 of a typedef name of an object type is ignored
`-Wobjc-interface-ivars`	declaration of instance variables in the interface is deprecated
`-Wobjc-literal-compare`	direct comparison of %select{an array literal\|a dictionary literal\|a numeric literal\|a boxed expression\|}0 has undefined behavior
`-Wobjc-literal-missing-atsign`	string literal must be prefixed by '@'
`-Wobjc-method-access`	instance method %objcinstance0 not found (return type defaults to 'id') did you mean %objcinstance2?
`-Wobjc-method-access`	class method %objcclass0 not found (return type defaults to 'id') did you mean %objcclass2?
`-Wobjc-method-access`	instance method %objcinstance0 not found (return type defaults to 'id')
`-Wobjc-method-access`	instance method %0 is being used on 'Class' which is not in the root class
`-Wobjc-method-access`	class method %objcclass0 not found (return type defaults to 'id')
`-Wobjc-method-access`	instance method %0 found instead of class method %1
`-Wobjc-missing-property-synthesis`	"auto property synthesis is synthesizing property not explicitly synthesized
`-Wobjc-missing-super-calls`	method possibly missing a [super %0] call
`-Wobjc-noncopy-retain-block-property`	"retain'ed block property does not copy the block " "- use copy attribute instead
`-Wobjc-nonunified-exceptions`	can not catch an exception thrown with @throw in C++ in the non-unified exception model
`-Wobjc-property-implementation`	property %0 requires method %1 to be defined - use @dynamic or provide a method implementation in this category
`-Wobjc-property-implementation`	property %0 requires method %1 to be defined - use @synthesize, @dynamic or provide a method implementation in this class implementation
`-Wobjc-property-implicit-mismatch`	"primary property declaration is implicitly strong while redeclaration in class extension is weak
`-Wobjc-property-matches-cocoa-ownership-rule`	property's synthesized getter follows Cocoa naming convention for returning 'owned' objects
`-Wobjc-property-no-attribute`	no 'assign', 'retain', or 'copy' attribute is specified - 'assign' is assumed
`-Wobjc-property-no-attribute`	default property attribute 'assign' not appropriate for non-GC object
`-Wobjc-property-synthesis`	auto property synthesis will not synthesize property '%0' because it is 'readwrite' but it will be synthesized 'readonly' via another property
`-Wobjc-property-synthesis`	"auto property synthesis will not synthesize property '%0' because it cannot share an ivar with another synthesized property
`-Wobjc-protocol-method-implementation`	category is implementing a method which will also be implemented by its primary class
`-Wobjc-protocol-property-synthesis`	auto property synthesis will not synthesize property declared in a protocol
`-Wobjc-redundant-literal-use`	using %0 with a literal is redundant
`-Wobjc-root-class`	class %0 defined without specifying a base class
`-Wobjc-string-compare`	direct comparison of a string literal has undefined behavior
`-Wobjc-string-concatenation`	concatenated NSString literal for an NSArray expression - possibly missing a comma
`-Wover-aligned`	type %0 requires %1 bytes of alignment and the default allocator only guarantees %2 bytes
`-Woverloaded-shift-op-parentheses`	overloaded operator %select{\|}0 has lower precedence than comparison operator
`-Woverloaded-virtual`	%q0 hides overloaded virtual %select{function\|functions}1
`-Woverriding-method-mismatch`	conflicting distributed object modifiers on parameter type in declaration of %0
`-Woverriding-method-mismatch`	conflicting parameter types in declaration of %0: %1 vs %2
`-Woverriding-method-mismatch`	conflicting variadic declaration of method and its implementation
`-Woverriding-method-mismatch`	conflicting distributed object modifiers on return type in declaration of %0
`-Woverriding-method-mismatch`	conflicting parameter types in declaration of %0%diff{: $ vs $\|}1,2
`-Woverriding-method-mismatch`	conflicting return type in declaration of %0%diff{: $ vs $\|}1,2
`-Woverriding-method-mismatch`	conflicting return type in declaration of %0: %1 vs %2
`-Wpacked`	packed attribute is unnecessary for %0
`-Wpadded`	padding %select{struct\|interface\|class}0 %1 with %2 %select{byte\|bit}3%select{\|s}4 to align anonymous bit-field
`-Wpadded`	padding %select{struct\|interface\|class}0 %1 with %2 %select{byte\|bit}3%select{\|s}4 to align %5
`-Wpadded`	padding size of %0 with %1 %select{byte\|bit}2%select{\|s}3 to alignment boundary
`-Wparentheses`	using the result of an assignment as a condition without parentheses
`-Wparentheses`	%0 has lower precedence than %1 %1 will be evaluated first
`-Wparentheses`	operator '?:' has lower precedence than '%0' '%0' will be evaluated first
`-Wparentheses-equality`	equality comparison with extraneous parentheses
`-Wpointer-arith`	subtraction of pointers to type %0 of zero size has undefined behavior
`-Wpredefined-identifier-outside-function`	predefined identifier is only valid inside function
`-Wprivate-extern`	use of __private_extern__ on a declaration may not produce external symbol private to the linkage unit and is deprecated
`-Wprotocol`	method %0 in protocol not implemented
`-Wprotocol-property-synthesis-ambiguity`	property of type %0 was selected for synthesis
`-Wreadonly-iboutlet-property`	readonly IBOutlet property '%0' when auto-synthesized may not work correctly with 'nib' loader
`-Wreadonly-setter-attrs`	property attributes '%0' and '%1' are mutually exclusive
`-Wreceiver-expr`	receiver type %0 is not 'id' or interface pointer, consider casting it to 'id'
`-Wreceiver-forward-class`	receiver type %0 for instance message is a forward declaration
`-Wreceiver-is-weak`	"weak %select{receiver\|property\|implicit property}0 may be unpredictably set to nil
`-Wreinterpret-base-class`	'reinterpret_cast' %select{from\|to}3 class %0 %select{to\|from}3 its %select{virtual base\|base at non-zero offset}2 %1 behaves differently from 'static_cast'
`-Wreorder`	%select{field\|base class}0 %1 will be initialized after %select{field\|base}2 %3
`-Wrequires-super-attribute`	%0 attribute cannot be applied to %select{methods in protocols\|dealloc}1
`-Wreturn-stack-address`	returning address of local temporary object
`-Wreturn-stack-address`	returning address of label, which is local
`-Wreturn-stack-address`	address of stack memory associated with local variable %0 returned
`-Wreturn-stack-address`	reference to stack memory associated with local variable %0 returned
`-Wreturn-stack-address`	returning reference to local temporary object
`-Wreturn-type`	control may reach end of non-void function
`-Wreturn-type`	non-void %select{function\|method}1 %0 should return a value, DefaultError
`-Wreturn-type`	control reaches end of non-void function
`-Wreturn-type-c-linkage`	%0 has C-linkage specified, but returns incomplete type %1 which could be incompatible with C
`-Wreturn-type-c-linkage`	%0 has C-linkage specified, but returns user-defined type %1 which is incompatible with C
`-Wsection`	section does not match previous declaration
`-Wselector`	creating selector for nonexistent method %0
`-Wselector-type-mismatch`	multiple selectors named %0 found
`-Wself-assign`	explicitly assigning a variable of type %0 to itself
`-Wself-assign-field`	assigning %select{field\|instance variable}0 to itself
`-Wsentinel`	"missing sentinel in %select{function call\|method dispatch\|block call}0
`-Wsentinel`	not enough variable arguments in %0 declaration to fit a sentinel
`-Wshadow`	declaration shadows a %select{" "local variable\|" "variable in %2\|" "static data member of %2\|" "field of %2}1
`-Wshadow-ivar`	local declaration of %0 hides instance variable
`-Wshift-count-negative`	shift count is negative
`-Wshift-count-overflow`	shift count = width of type
`-Wshift-op-parentheses`	operator '%0' has lower precedence than '%1' '%1' will be evaluated first
`-Wshift-overflow`	signed shift result (%0) requires %1 bits to represent, but %2 only has %3 bits
`-Wshift-sign-overflow`	signed shift result (%0) sets the sign bit of the shift expression's type (%1) and becomes negative
`-Wshorten-64-to-32`	implicit conversion loses integer precision: %0 to %1
`-Wsign-compare`	comparison of integers of different signs: %0 and %1
`-Wsign-conversion`	implicit conversion changes signedness: %0 to %1
`-Wsign-conversion`	operand of ? changes signedness: %0 to %1
`-Wsizeof-array-argument`	sizeof on array function parameter will return size of %0 instead of %1
`-Wsizeof-array-decay`	sizeof on pointer operation will return size of %0 instead of %1
`-Wsizeof-pointer-memaccess`	'%0' call operates on objects of type %1 while the size is based on a " "different type %2
`-Wsizeof-pointer-memaccess`	argument to 'sizeof' in %0 call is the same pointer type %1 as the %select{destination\|source}2 expected %3 or an explicit length
`-Wsometimes-uninitialized`	variable %0 is %select{used\|captured}1 uninitialized whenever %select{'%3' condition is %select{true\|false}4\|'%3' loop %select{is entered\|exits because its condition is false}4\|'%3' loop %select{condition is true\|exits because its condition is false}4\|switch %3 is taken\|its declaration is reached\|%3 is called}2
`-Wstatic-local-in-inline`	non-constant static local variable in inline function may be different in different files
`-Wstatic-self-init`	static variable %0 is suspiciously used within its own initialization
`-Wstrict-selector-match`	multiple methods named %0 found
`-Wstring-compare`	result of comparison against %select{a string literal\|@encode}0 is unspecified (use strncmp instead)
`-Wstring-conversion`	implicit conversion turns string literal into bool: %0 to %1
`-Wstring-plus-char`	adding %0 to a string pointer does not append to the string
`-Wstring-plus-int`	adding %0 to a string does not append to the string
`-Wstrlcpy-strlcat-size`	size argument in %0 call appears to be size of the source expected the size of the destination
`-Wstrncat-size`	the value of the size argument in 'strncat' is too large, might lead to a " "buffer overflow
`-Wstrncat-size`	size argument in 'strncat' call appears " "to be size of the source
`-Wstrncat-size`	the value of the size argument to 'strncat' is wrong
`-Wsuper-class-method-mismatch`	method parameter type %diff{$ does not match super class method parameter type $\|does not match super class method parameter type}0,1
`-Wswitch`	overflow converting case value to switch condition type (%0 to %1)
`-Wswitch`	case value not in enumerated type %0
`-Wswitch`	%0 enumeration values not handled in switch: %1, %2, %3...
`-Wswitch`	enumeration values %0 and %1 not handled in switch
`-Wswitch`	enumeration value %0 not handled in switch
`-Wswitch`	enumeration values %0, %1, and %2 not handled in switch
`-Wswitch-enum`	enumeration values %0, %1, and %2 not explicitly handled in switch
`-Wswitch-enum`	enumeration values %0 and %1 not explicitly handled in switch
`-Wswitch-enum`	%0 enumeration values not explicitly handled in switch: %1, %2, %3...
`-Wswitch-enum`	enumeration value %0 not explicitly handled in switch
`-Wtautological-compare`	comparison of %0 unsigned%select{\| enum}2 expression is always %1
`-Wtautological-compare`	%select{self-\|array }0comparison always evaluates to %select{false\|true\|a constant}1
`-Wtautological-compare`	comparison of unsigned%select{\| enum}2 expression %0 is always %1
`-Wtautological-constant-out-of-range-compare`	comparison of constant %0 with expression of type %1 is always %select{false\|true}2
`-Wthread-safety-analysis`	locking '%0' that is already locked
`-Wthread-safety-analysis`	cannot call function '%0' while mutex '%1' is locked
`-Wthread-safety-analysis`	%select{reading\|writing}2 the value pointed to by '%0' requires locking %select{'%1'\|'%1' exclusively}2
`-Wthread-safety-analysis`	unlocking '%0' that was not locked
`-Wthread-safety-analysis`	mutex '%0' is locked exclusively and shared in the same scope
`-Wthread-safety-analysis`	calling function '%0' requires %select{shared\|exclusive}2 lock on '%1'
`-Wthread-safety-analysis`	%select{reading\|writing}2 variable '%0' requires locking %select{'%1'\|'%1' exclusively}2
`-Wthread-safety-analysis`	cannot resolve lock expression
`-Wthread-safety-analysis`	expecting mutex '%0' to be locked at the end of function
`-Wthread-safety-analysis`	mutex '%0' is not locked on every path through here
`-Wthread-safety-analysis`	%select{reading\|writing}1 the value pointed to by '%0' requires locking %select{any mutex\|any mutex exclusively}1
`-Wthread-safety-analysis`	%select{reading\|writing}1 variable '%0' requires locking %select{any mutex\|any mutex exclusively}1
`-Wthread-safety-analysis`	mutex '%0' is still locked at the end of function
`-Wthread-safety-analysis`	expecting mutex '%0' to be locked at start of each loop
`-Wthread-safety-attributes`	ignoring %0 attribute because its argument is invalid
`-Wthread-safety-attributes`	%0 attribute only applies to %select{fields and global variables\|functions and methods\|classes and structs}1
`-Wthread-safety-attributes`	%0 attribute requires arguments that are class type or point to class type type here is '%1'
`-Wthread-safety-attributes`	%0 attribute can only be applied in a context annotated with 'lockable' attribute
`-Wthread-safety-attributes`	%0 attribute requires arguments whose type is annotated with 'lockable' attribute type here is '%1'
`-Wthread-safety-attributes`	'%0' only applies to pointer types type here is %1
`-Wthread-safety-beta`	Thread safety beta warning.
`-Wthread-safety-precise`	%select{reading\|writing}2 the value pointed to by '%0' requires locking %select{'%1'\|'%1' exclusively}2
`-Wthread-safety-precise`	%select{reading\|writing}2 variable '%0' requires locking %select{'%1'\|'%1' exclusively}2
`-Wthread-safety-precise`	calling function '%0' requires %select{shared\|exclusive}2 lock on '%1'
`-Wtype-safety`	this type tag was not designed to be used with this function
`-Wtype-safety`	specified %0 type tag requires a null pointer
`-Wtype-safety`	argument type %0 doesn't match specified '%1' type tag %select{that requires %3\|}2
`-Wundeclared-selector`	undeclared selector %0 did you mean %1?
`-Wundeclared-selector`	undeclared selector %0
`-Wundefined-inline`	inline function %q0 is not defined
`-Wundefined-internal`	%select{function\|variable}0 %q1 has internal linkage but is not defined
`-Wundefined-reinterpret-cast`	dereference of type %1 that was reinterpret_cast from type %0 has undefined behavior
`-Wundefined-reinterpret-cast`	reinterpret_cast from %0 to %1 has undefined behavior
`-Wuninitialized`	reference %0 is not yet bound to a value when used within its own initialization
`-Wuninitialized`	field %0 is uninitialized when used here
`-Wuninitialized`	block pointer variable %0 is uninitialized when captured by block
`-Wuninitialized`	variable %0 is uninitialized when used within its own initialization
`-Wuninitialized`	variable %0 is uninitialized when %select{used here\|captured by block}1
`-Wuninitialized`	reference %0 is not yet bound to a value when used here
`-Wunneeded-internal-declaration`	%select{function\|variable}0 %1 is not needed and will not be emitted
`-Wunneeded-internal-declaration`	'static' function %0 declared in header file should be declared 'static inline'
`-Wunneeded-member-function`	member function %0 is not needed and will not be emitted
`-Wunreachable-code`	will never be executed
`-Wunsequenced`	multiple unsequenced modifications to %0
`-Wunsequenced`	unsequenced modification and access to %0
`-Wunsupported-friend`	dependent nested name specifier '%0' for friend template declaration is not supported ignoring this friend declaration
`-Wunsupported-friend`	dependent nested name specifier '%0' for friend class declaration is not supported turning off access control for %1
`-Wunsupported-visibility`	target does not support 'protected' visibility using 'default'
`-Wunused-comparison`	%select{equality\|inequality}0 comparison result unused
`-Wunused-const-variable`	unused variable %0
`-Wunused-exception-parameter`	unused exception parameter %0
`-Wunused-function`	unused function %0
`-Wunused-label`	unused label %0
`-Wunused-member-function`	unused member function %0
`-Wunused-parameter`	unused parameter %0
`-Wunused-private-field`	private field %0 is not used
`-Wunused-property-ivar`	ivar %0 which backs the property is not referenced in this property's accessor
`-Wunused-result`	ignoring return value of function declared with warn_unused_result attribute
`-Wunused-value`	ignoring return value of function declared with %0 attribute
`-Wunused-value`	expression result unused should this cast be to 'void'?
`-Wunused-value`	expression result unused
`-Wunused-variable`	unused variable %0
`-Wunused-volatile-lvalue`	expression result unused assign into a variable to force a volatile load
`-Wused-but-marked-unused`	%0 was marked unused but was used
`-Wuser-defined-literals`	user-defined literal suffixes not starting with '_' are reserved%select{ no literal will invoke this operator\|}0
`-Wvarargs`	second parameter of 'va_start' not last named argument
`-Wvarargs`	'va_start' has undefined behavior with reference types
`-Wvarargs`	second argument to 'va_arg' is of promotable type %0 this va_arg has undefined behavior because arguments will be promoted to %1
`-Wvector-conversion`	incompatible vector types %select{%diff{assigning to $ from $\|assigning to different types}0,1\|%diff{passing $ to parameter of type $\|passing to parameter of different type}0,1\|%diff{returning $ from a function with result type $\|returning from function with different return type}0,1\|%diff{converting $ to type $\|converting between types}0,1\|%diff{initializing $ with an expression of type $\|initializing with expression of different type}0,1\|%diff{sending $ to parameter of type $\|sending to parameter of different type}0,1\|%diff{casting $ to type $\|casting between types}0,1}2
`-Wvexing-parse`	parentheses were disambiguated as a function declaration
`-Wvexing-parse`	empty parentheses interpreted as a function declaration
`-Wvisibility`	declaration of %0 will not be visible outside of this function
`-Wvisibility`	redefinition of %0 will not be visible outside of this function
`-Wvla`	variable length array used
`-Wvla-extension`	variable length arrays are a C99 feature
`-Wweak-template-vtables`	explicit template instantiation %0 will emit a vtable in every translation unit
`-Wweak-vtables`	%0 has no out-of-line virtual method definitions; its vtable will be emitted in every translation unit

Lexer Warnings

Warning	Message
`-W#pragma-messages`	%0
`-W#warnings`	%0
`-W#warnings`	%0
`-Wambiguous-macro`	ambiguous expansion of macro %0
`-Wauto-import`	treating #%select{include\|import\|include_next\|__include_macros}0 as an import of module '%1'
`-Wbackslash-newline-escape`	backslash and newline separated by space
`-Wc++11-compat`	identifier after literal will be treated as a user-defined literal suffix in C++11
`-Wc++11-compat`	'%0' is a keyword in C++11
`-Wc++98-c++11-compat`	digit separators are incompatible with C++ standards before C++1y
`-Wc++98-c++11-compat-pedantic`	binary integer literals are incompatible with C++ standards before C++1y
`-Wc++98-compat`	raw string literals are incompatible with C++98
`-Wc++98-compat`	unicode literals are incompatible with C++98
`-Wc++98-compat`	universal character name referring to a control character is incompatible with C++98
`-Wc++98-compat`	'::' is treated as digraph ':' (aka '[') followed by ':' in C++98
`-Wc++98-compat`	using this character in an identifier is incompatible with C++98
`-Wc++98-compat`	specifying character '%0' with a universal character name is incompatible with C++98
`-Wc++98-compat-pedantic`	variadic macros are incompatible with C++98
`-Wc++98-compat-pedantic`	#line number greater than 32767 is incompatible with C++98
`-Wc++98-compat-pedantic`	C++98 requires newline at end of file
`-Wc++98-compat-pedantic`	empty macro arguments are incompatible with C++98
`-Wc99-compat`	unicode literals are incompatible with C99
`-Wc99-compat`	%select{using this character in an identifier\|starting an identifier with this character}0 is incompatible with C99
`-Wcomment`	'/*' within block comment
`-Wcomment`	escaped newline between */ characters at block comment end
`-Wdisabled-macro-expansion`	disabled expansion of recursive macro
`-Wheader-guard`	%0 is used as a header guard here, followed by #define of a different macro
`-Wignored-attributes`	unknown attribute '%0'
`-Wincomplete-module`	header '%0' is included in module '%1' but not listed in module map
`-Wincomplete-umbrella`	umbrella header for module '%0' does not include header '%1'
`-Winvalid-token-paste`	pasting formed '%0', an invalid preprocessing token, DefaultError
`-Wmalformed-warning-check`	__has_warning expected option name (e.g. \"-Wundef\")
`-Wnewline-eof`	no newline at end of file
`-Wnull-character`	null character ignored
`-Wnull-character`	null character(s) preserved in string literal
`-Wnull-character`	null character(s) preserved in character literal
`-Wtrigraphs`	ignored trigraph would end block comment
`-Wtrigraphs`	trigraph ignored
`-Wundef`	%0 is not defined, evaluates to 0
`-Wunicode`	universal character names are only valid in C99 or C++ treating as '\\' followed by identifier
`-Wunicode`	\\%0 used with no following hex digits treating as '\\' followed by identifier
`-Wunicode`	incomplete universal character name treating as '\\' followed by identifier
`-Wunicode`	universal character name refers to a surrogate character
`-Wunknown-pragmas`	unknown pragma ignored
`-Wunknown-pragmas`	pragma STDC FENV_ACCESS ON is not supported, ignoring pragma
`-Wunused-macros`	macro is not used

Parser Warnings

Warning	Message
`-Warc-bridge-casts-disallowed-in-nonarc`	'%0' casts have no effect when not using ARC
`-Wattributes`	unknown __declspec attribute %0 ignored
`-Wavailability`	'unavailable' availability overrides all other availability information
`-Wc++11-compat`	use of right-shift operator ('') in template argument will require parentheses in C++11
`-Wc++11-compat`	'auto' storage class specifier is redundant and incompatible with C++11
`-Wc++98-c++11-compat`	'decltype(auto)' type specifier is incompatible with C++ standards before C++1y
`-Wc++98-compat`	range-based for loop is incompatible with C++98
`-Wc++98-compat`	alias declarations are incompatible with C++98
`-Wc++98-compat`	in-class initialization of non-static data members is incompatible with C++98
`-Wc++98-compat`	defaulted function definitions are incompatible with C++98
`-Wc++98-compat`	rvalue references are incompatible with C++98
`-Wc++98-compat`	reference qualifiers on functions are incompatible with C++98
`-Wc++98-compat`	inline namespaces are incompatible with C++98
`-Wc++98-compat`	generalized initializer lists are incompatible with C++98
`-Wc++98-compat`	trailing return types are incompatible with C++98
`-Wc++98-compat`	enumeration types with a fixed underlying type are incompatible with C++98
`-Wc++98-compat`	alignof expressions are incompatible with C++98
`-Wc++98-compat`	'%0' keyword is incompatible with C++98
`-Wc++98-compat`	'decltype' type specifier is incompatible with C++98
`-Wc++98-compat`	deleted function definitions are incompatible with C++98
`-Wc++98-compat`	consecutive right angle brackets are incompatible with C++98 (use '> >')
`-Wc++98-compat`	static_assert declarations are incompatible with C++98
`-Wc++98-compat`	scoped enumerations are incompatible with C++98
`-Wc++98-compat`	lambda expressions are incompatible with C++98
`-Wc++98-compat`	attributes are incompatible with C++98
`-Wc++98-compat`	'alignas' is incompatible with C++98
`-Wc++98-compat`	noexcept specifications are incompatible with C++98
`-Wc++98-compat`	literal operators are incompatible with C++98
`-Wc++98-compat`	noexcept expressions are incompatible with C++98
`-Wc++98-compat`	'nullptr' is incompatible with C++98
`-Wc++98-compat-pedantic`	extra '' outside of a function is incompatible with C++98
`-Wc++98-compat-pedantic`	extern templates are incompatible with C++98
`-Wc++98-compat-pedantic`	commas at the end of enumerator lists are incompatible with C++98
`-Wdangling-else`	add explicit braces to avoid dangling else
`-Wdeprecated`	Use of 'long' with '__vector' is deprecated
`-Wdeprecated-declarations`	use of C-style parameters in Objective-C method declarations is deprecated
`-Wdeprecated-register`	'register' storage class specifier is deprecated
`-Wduplicate-decl-specifier`	duplicate '%0' declaration specifier
`-Wextra-semi`	extra ';' after member function definition
`-Wextra-tokens`	"extra tokens at the end of '#pragma omp %0' are ignored
`-Wgcc-compat`	GCC does not allow %0 attribute in this position on a function definition
`-Wignored-attributes`	attribute %0 ignored, because it is not attached to a declaration
`-Wmicrosoft-exists`	dependent %select{__if_not_exists\|__if_exists}0 declarations are ignored
`-Wmissing-selector-name`	%0 used as the name of the previous parameter rather than as part of the selector
`-Wsemicolon-before-method-body`	semicolon before method body is ignored
`-Wsource-uses-openmp`	"unexpected '#pragma omp ...' in program
`-Wstatic-inline-explicit-instantiation`	ignoring '%select{static\|inline}0' keyword on explicit template instantiation

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