------- Comment #2 from manu at gcc dot gnu dot org 2008-08-23 12:53 ------- Andrew, how could we detect that it is a decayed array?
I think we would like to warn for if (a == (void *) 0) but not for if ((void *)a == 0) or even if possible not for if (&a[0] == 0) Vincent, this warning was added on purpose, because probably someone requested it. I don't see that it is very different from the documented case of using the address of a function in a conditional. You should be able to work-around the macro case by casting the array to (char *) or perhaps casting to (void *) ? That said, we would like to not warn within macros for a wide range of warnings but we don't have the infrastructure to do that yet. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36299
