iOS编程 手动忽略clang编译器警告

在iOS开发过程中, 我们可能会碰到一些系统方法弃用, weak、循环引用、不能运行之类的警告。 有代码洁癖的孩子们非常想消除他们, 今天就让我们来一次Fuck 警告。！

首先学会主要的语句

            
                
                    #pragma clang diagnostic push
                    #pragma clang diagnostic ignored "-Wdeprecated-declarations"
                
            
        

这里写出现警告的代码

            
                
                    #pragma clang diagnostic pop
                
            
        

这样就消除了方法弃用的警告。

同理, 大家能够在下边搜索到相应的警告, 这样 就能够把前边的字串填入上边的ignored的后边, 然后包住你的代码, 就OK了

原网址： http://fuckingclangwarnings.com/

            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 isinitializedby a temporaryarray, which will be destroyed at the endof 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|instancevariable}0 %1isaccessed multiple times in this %select{function|method|block|lambda}2 but may be unpredictably setto nil assign to a strong variabletokeep the object alive
-Warc-retain-cycles    capturing %0 strongly in this blockis likely toleadto a retain cycle
-Warc-unsafe-retained-assign    assigning retained objecttounsafe 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}0to a weak %select{property|variable}1object will be released after assignment
-Warc-unsafe-retained-assign    assigning retained objectto %select{weak|unsafe_unretained}0 %select{property|variable}1object will be released after assignment
-Warray-bounds    arrayindex %0is past the endof the array (which contains %1element%s2)
-Warray-bounds    arrayindex %0isbefore the beginningof the array
-Warray-bounds    ‘static‘ has no effect on zero-length arrays
-Warray-bounds    array argument is too small contains %0 elements, callee requires atleast %1
-Warray-bounds-pointer-arithmetic    the pointer incremented by %0 refers past the endof the array (that contains %1element%s2)
-Warray-bounds-pointer-arithmetic    the pointer decremented by %0 refers before the beginningof the array
-Wassign-enum    integerconstantnotinrangeof enumerated type %0
-Watomic-property-with-user-defined-accessor    writable atomic property %0 cannot pair a synthesized %select{getter|setter}1with a user defined %select{getter|setter}2
-Wattributes    unknownattribute %0 ignored
-Wauto-var-id‘auto‘ deduced as‘id‘in declaration of %0
-Wavailability    unknown platform %0inavailability macro
-Wavailability    overriding method %select{introduced after|deprecated before|obsoleted before}0 overridden method on %1 (%2 vs. %3)
-Wavailability    availability does notmatch previous declaration
-Wavailability    overriding method cannot be unavailable on %0when its overridden method is available
-Wavailability    feature cannot be %select{introduced|deprecated|obsoleted}0in %1version %2before it was %select{introduced|deprecated|obsoleted}3inversion %4attribute ignored
-Wbad-function-castcastfromfunctioncalloftype %0to non-matching type %1
-Wbitfield-constant-conversion    implicit truncation from %2to bitfield changes valuefrom %0to %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 withC++ standards " "beforeC++1y
-Wc++98-c++11-compat    variable declaration in a constexpr %select{function|constructor}0is incompatible withC++ standards beforeC++1y
-Wc++98-c++11-compat    constexpr functionwithnoreturn statements is incompatible withC++ standards beforeC++1y
-Wc++98-c++11-compat    multiple return statements in constexpr functionis incompatible withC++ standards beforeC++1y
-Wc++98-c++11-compat    variable templates are incompatible withC++ standards beforeC++1y
-Wc++98-compat    substitution failure due toaccess control is incompatible withC++98
-Wc++98-compat    %select{anonymous struct|union}0member %1with a non-trivial %select{constructor|copy constructor|moveconstructor|copy assignment operator|move assignment operator|destructor}2is incompatible withC++98
-Wc++98-compat    enumeration typeinnestedname specifier is incompatible withC++98
-Wc++98-compat    staticdatamember %0inunionis incompatible withC++98
-Wc++98-compat    defaulttemplate arguments for a functiontemplateare incompatible withC++98
-Wc++98-compat    scalar initializedfromempty initializer listis incompatible withC++98
-Wc++98-compat    befriending %1without‘%select{struct|interface|union|class|enum}0‘ keyword is incompatible withC++98
-Wc++98-compat    useofnull pointer as non-typetemplate argument is incompatible withC++98
-Wc++98-compat    friend declaration naming a memberof the declaring classis incompatible withC++98
-Wc++98-compat    non-class friend type %0is incompatible withC++98
-Wc++98-compat    befriending enumeration type %0is incompatible withC++98
-Wc++98-compat    useof non-staticdatamember %0in an unevaluated contextis incompatible withC++98
-Wc++98-compat    friend function %0 would be implicitly redefined inC++98
-Wc++98-compat    %select{classtemplate|classtemplatepartial|variabletemplate|variabletemplatepartial|functiontemplate|memberfunction|staticdatamember|memberclass|member enumeration}0 specialization of %1 outside namespace %2is incompatible withC++98
-Wc++98-compat    referenceinitializedfrom initializer listis incompatible withC++98
-Wc++98-compat    redundant parentheses surrounding address non-typetemplate argument are incompatible withC++98
-Wc++98-compat    initialization of initializer_list objectis incompatible withC++98
-Wc++98-compat    useof‘template‘ keyword outside of a templateis incompatible withC++98
-Wc++98-compat    non-typetemplate argument referring to %select{function|object}0 %1with internal linkage is incompatible withC++98
-Wc++98-compat    useof‘typename‘ outside of a templateis incompatible withC++98
-Wc++98-compat    passingobjectof trivial but non-POD type %0through variadic %select{function|block|method|constructor}1is incompatible withC++98
-Wc++98-compat    goto would jump into protected scopeinC++98
-Wc++98-compat    constructorcallfrom initializer listis incompatible withC++98
-Wc++98-compat    ‘auto‘type specifier is incompatible withC++98
-Wc++98-compat    delegating constructors are incompatible withC++98
-Wc++98-compat    ‘constexpr‘ specifier is incompatible withC++98
-Wc++98-compat    inheriting constructors are incompatible withC++98
-Wc++98-compat    explicit conversion functions are incompatible withC++98
-Wc++98-compat    switchcase would be in a protected scopeinC++98
-Wc++98-compat    ‘%0‘type specifier is incompatible withC++98
-Wc++98-compat    indirect goto might cross protected scopes inC++98
-Wc++98-compat-pedantic    castbetween pointer-to-functionand pointer-to-objectis incompatible withC++98
-Wc++98-compat-pedantic    implicit conversion fromarraysize expression oftype %0to %select{integral|enumeration}1type %2is incompatible withC++98
-Wcast-align    castfrom %0to %1 increases required alignment from %2to %3
-Wcast-of-sel-typecastoftype %0to %1is deprecated use sel_getName instead
-Wchar-subscripts    array subscript isoftype‘char‘
-Wconditional-uninitialized    variable %0 may be uninitialized when %select{used here|captured byblock}1
-Wconstant-logical-operand    useoflogical‘%0‘withconstant operand
-Wconstexpr-not-const    ‘constexpr‘ non-staticmemberfunction will not be implicitly ‘const‘inC++1y add‘const‘to avoid a changein behavior
-Wconsumed    state ofvariable‘%0‘ must matchat the entry andexitofloop
-Wconsumed    parameter ‘%0‘notin expected state when the functionreturns: expected ‘%1‘, observed ‘%2‘
-Wconsumed    argument notin expected state expected ‘%0‘, observed ‘%1‘
-Wconsumed    invalid invocation of method ‘%0‘on a temporaryobjectwhile it isin the ‘%1‘ state
-Wconsumed    return state setfor an unconsumable type‘%0‘
-Wconsumed    consumed analysis attributeis attached tomemberofclass‘%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 accessto 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?