Bug 297946

Remove hack that disables format string attributes in Objective-C++ sources. This is the code that disables format string attributes in Source/WTF/wtf/Assertions.h: ``` #if COMPILER(GCC_COMPATIBLE) && !defined(__OBJC__) /* WTF logging functions can process %@ in the format string to log a NSObject* but the printf format attribute emits a warning when %@ is used in the format string. Until <rdar://problem/5195437> is resolved we can't include the attribute when being used from Objective-C code in case it decides to use %@. */ #define WTF_ATTRIBUTE_PRINTF(formatStringArgument, extraArguments) __attribute__((__format__(printf, formatStringArgument, extraArguments))) #else #define WTF_ATTRIBUTE_PRINTF(formatStringArgument, extraArguments) #endif ``` This is now fixable after this clang change from a few years ago: <https://github.com/llvm/llvm-project/commit/91ed7e19418181ae385c2626cedd3b08b6ba43a6> We can introduce a new attribute and a separate logging function that uses the attribute so the compiler is able to verify placeholders correctly: __attribute__((__format__(__NSString__, format, vaargs)))