On Apr 29, 2009, at 9:58 PM, Jack Howarth wrote:
Does anyone understand why Apple's gcc-4.2 compiler in
Xcode 3.1.2 accepts the following code...
typedef const struct __CFString * CFStringRef;
typedef struct __CFBundle *CFBundleRef;
extern
CFStringRef CFBundleCopyLocalizedString(CFBundleRef bundle,
CFStringRef key, CFStringRef value, CFStringRef tableName)
__attribute__((format_arg(2)));
and FSF gcc 4.3 and 4.4 produces the error message...
gcc-4 testcase.c -F. -S -o test.s
testcase.c:5: error: format string argument not a string type
...instead? Is this a language violation that Apple ignores or
do they have more capabilities in their attributes than FSF gcc?
Thanks in advance for any clarification on whether this merits
an enhancement request for gcc 4.5.
Apple GCC understands "Core Foundation" strings, which is what
__CFString is. I don't know all the details, but the code is open
source through open darwin.
-Chris
