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llvm-project/clang/test/SemaObjC/format-arg-attribute.m

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Objective-C. Revert patch r193003 for further internal discussions. // rdar://16006401 llvm-svn: 200986
2014-02-08 03:25:10 +08:00
// RUN: %clang_cc1 -verify -fsyntax-only %s
implementation of format_arg for ObjC methods/functions. Still more to do. llvm-svn: 72173
2009-05-21 01:41:43 +08:00
@class NSString;
extern NSString *fa2 (const NSString *) __attribute__((format_arg(1)));
extern NSString *fa3 (NSString *) __attribute__((format_arg(1)));
Added the attribute name to the err_attribute_wrong_number_arguments diagnostic for clarity; updated almost all of the affected test cases. Thanks to Fariborz Jahanian for the suggestion! llvm-svn: 186980
2013-07-24 03:30:11 +08:00
extern void fc1 (const NSString *) __attribute__((format_arg)); // expected-error {{'format_arg' attribute takes one argument}}
extern void fc2 (const NSString *) __attribute__((format_arg())); // expected-error {{'format_arg' attribute takes one argument}}
extern void fc3 (const NSString *) __attribute__((format_arg(1, 2))); // expected-error {{'format_arg' attribute takes one argument}}
implementation of format_arg for ObjC methods/functions. Still more to do. llvm-svn: 72173
2009-05-21 01:41:43 +08:00
Improving the diagnostic for cases where the attribute only appertains to a function with a prototype. llvm-svn: 252055
2015-11-05 00:09:04 +08:00
struct s1 { int i; } __attribute__((format_arg(1))); // expected-warning {{'format_arg' attribute only applies to non-K&R-style functions}}
union u1 { int i; } __attribute__((format_arg(1))); // expected-warning {{'format_arg' attribute only applies to non-K&R-style functions}}
enum e1 { E1V0 } __attribute__((format_arg(1))); // expected-warning {{'format_arg' attribute only applies to non-K&R-style functions}}
implementation of format_arg for ObjC methods/functions. Still more to do. llvm-svn: 72173
2009-05-21 01:41:43 +08:00
extern NSString *ff3 (const NSString *) __attribute__((format_arg(3-2)));
Use attribute argument information to determine when to parse attribute arguments as expressions. This change partly addresses a heinous problem we have with the parsing of attribute arguments that are a lone identifier. Previously, we would end up parsing the 'align' attribute of this as an expression "(Align)": template<unsigned Size, unsigned Align> class my_aligned_storage { __attribute__((align((Align)))) char storage[Size]; }; while this would parse as a "parameter name" 'Align': template<unsigned Size, unsigned Align> class my_aligned_storage { __attribute__((align(Align))) char storage[Size]; }; The code that handles the alignment attribute would completely ignore the parameter name, so the while the first of these would do what's expected, the second would silently be equivalent to template<unsigned Size, unsigned Align> class my_aligned_storage { __attribute__((align)) char storage[Size]; }; i.e., use the maximal alignment rather than the specified alignment. Address this by sniffing the "Args" provided in the TableGen description of attributes. If the first argument is "obviously" something that should be treated as an expression (rather than an identifier to be matched later), parse it as an expression. Fixes <rdar://problem/13700933>. llvm-svn: 180973
2013-05-03 07:25:32 +08:00
extern NSString *ff4 (const NSString *) __attribute__((format_arg(foo))); // expected-error {{use of undeclared identifier 'foo'}}
implementation of format_arg for ObjC methods/functions. Still more to do. llvm-svn: 72173
2009-05-21 01:41:43 +08:00
/* format_arg formats must take and return a string. */
extern NSString *fi0 (int) __attribute__((format_arg(1))); // expected-error {{format argument not a string type}}
extern NSString *fi1 (NSString *) __attribute__((format_arg(1)));
extern NSString *fi2 (NSString *) __attribute__((format_arg(1)));
extern int fi3 (const NSString *) __attribute__((format_arg(1))); // expected-error {{function does not return NSString}}
extern NSString *fi4 (const NSString *) __attribute__((format_arg(1)));
extern NSString *fi5 (const NSString *) __attribute__((format_arg(1)));