_GL_HAS_BUILTIN_ADD_OVERFLOW  126 lib/intprops-internal.h # define _GL_HAS_BUILTIN_MUL_OVERFLOW _GL_HAS_BUILTIN_ADD_OVERFLOW
_GL_HAS_BUILTIN_ADD_OVERFLOW  143 lib/intprops-internal.h      && ! (_GL_HAS_BUILTIN_ADD_OVERFLOW && _GL_HAS_BUILTIN_MUL_OVERFLOW))
_GL_HAS_BUILTIN_ADD_OVERFLOW  151 lib/intprops-internal.h #if _GL_HAS_BUILTIN_ADD_OVERFLOW