_GL_HAS_BUILTIN_MUL_OVERFLOW 124 lib/intprops-internal.h # define _GL_HAS_BUILTIN_MUL_OVERFLOW 0 _GL_HAS_BUILTIN_MUL_OVERFLOW 126 lib/intprops-internal.h # define _GL_HAS_BUILTIN_MUL_OVERFLOW _GL_HAS_BUILTIN_ADD_OVERFLOW