_GL_HAS_BUILTIN_ADD_OVERFLOW  102 lib/intprops-internal.h #    define _GL_HAS_BUILTIN_ADD_OVERFLOW 0
_GL_HAS_BUILTIN_ADD_OVERFLOW  104 lib/intprops-internal.h #    define _GL_HAS_BUILTIN_ADD_OVERFLOW __has_builtin (__builtin_add_overflow)
_GL_HAS_BUILTIN_ADD_OVERFLOW  108 lib/intprops-internal.h #    define _GL_HAS_BUILTIN_ADD_OVERFLOW 1
_GL_HAS_BUILTIN_ADD_OVERFLOW  110 lib/intprops-internal.h #    define _GL_HAS_BUILTIN_ADD_OVERFLOW 0