_GL_HAS_BUILTIN_MUL_OVERFLOW  112 lib/intprops-internal.h #define _GL_HAS_BUILTIN_MUL_OVERFLOW 0
_GL_HAS_BUILTIN_MUL_OVERFLOW  114 lib/intprops-internal.h #define _GL_HAS_BUILTIN_MUL_OVERFLOW _GL_HAS_BUILTIN_ADD_OVERFLOW