[llvm-bugs] [Bug 36599] __attribute__((format_arg(X)) is broken with ObjC message sends

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=36599

Ben Hamilton <bhamiltoncx at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|ASSIGNED                    |RESOLVED

--- Comment #1 from Ben Hamilton <bhamiltoncx at gmail.com> ---
This is actually an off-by-one error in the Apple SDK:

@interface NSBundle
- (NSString *)localizedStringForKey:(NSString *)key value:(nullable NSString
*)value table:(nullable NSString *)tableName __attribute__((format_arg(1)));
@end

should be:

@interface NSBundle
- (NSString *)localizedStringForKey:(NSString *)key value:(nullable NSString
*)value table:(nullable NSString *)tableName __attribute__((format_arg(2)));
@end

since it's the 2nd argument (value) which potentially takes a format string,
and format_arg(X) is 1-based, not 0-based.

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