Compiler and standard library are two separate codebases, in fact gcc gets routinely used with standard libraries other than GNU's. Reimplementing printf parsing probably is the cleanest solution.
No reason that glibc can't include a validate_format_string routine to be run at compile-time by gcc. There are already so many conditional compilation sections in both codebases that another #ifdef GNU in gcc isn't going to hurt anyone :)
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Compiler and standard library are two separate codebases, in fact gcc gets routinely used with standard libraries other than GNU's. Reimplementing printf parsing probably is the cleanest solution.
No reason that glibc can't include a validate_format_string routine to be run at compile-time by gcc. There are already so many conditional compilation sections in both codebases that another #ifdef GNU in gcc isn't going to hurt anyone :)