_GL_HAS_BUILTIN_OVERFLOW_P 151 src/vfs/tar/tar-sparse.c #define _GL_HAS_BUILTIN_OVERFLOW_P 0 _GL_HAS_BUILTIN_OVERFLOW_P 153 src/vfs/tar/tar-sparse.c #define _GL_HAS_BUILTIN_OVERFLOW_P __has_builtin (__builtin_mul_overflow_p) _GL_HAS_BUILTIN_OVERFLOW_P 155 src/vfs/tar/tar-sparse.c #define _GL_HAS_BUILTIN_OVERFLOW_P (7 <= __GNUC__)