[Bug c/65901] no warning or error for va_arg (ap, void)

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65901

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Apr 28 08:36:50 2015
New Revision: 222515

URL: https://gcc.gnu.org/viewcvs?rev=222515&root=gcc&view=rev
Log:
        PR c/65901
        * c-typeck.c (c_build_va_arg): Require TYPE be a complete type.

        * gcc.c-torture/compile/pr48767.c (foo): Add dg-error.
        * gcc.dg/pr65901.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr65901.c
Modified:
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-typeck.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.c-torture/compile/pr48767.c