gcc: Darwin Format Checks

1 
1 6.60.2 Darwin Format Checks
1 ---------------------------
1 
1 Darwin targets support the 'CFString' (or '__CFString__') in the format
1 attribute context.  Declarations made with such attribution are parsed
1 for correct syntax and format argument types.  However, parsing of the
1 format string itself is currently undefined and is not carried out by
1 this version of the compiler.
1 
1  Additionally, 'CFStringRefs' (defined by the 'CoreFoundation' headers)
1 may also be used as format arguments.  Note that the relevant headers
1 are only likely to be available on Darwin (OSX) installations.  On such
1 installations, the XCode and system documentation provide descriptions
1 of 'CFString', 'CFStringRefs' and associated functions.
1