re PR c/19333 (C front end accepts arrays of incomplete types)

re PR c/19333 (C front end accepts arrays of incomplete types)

gcc/
        PR c/19333
        * c-decl.c (start_decl): Do not warn about arrays of elements with
        an incomplete type here.
        (grokdeclarator): Do it here by making a pedwarn an error.
        * c-typeck.c (push_init_level): If there were previous errors with
        the constructor type, do not warn about braces for initializers.
        (process_init_element): Likewise for excess initializer elements.

testsuite/
        PR c/19333
        * testsuite/gcc.c-torture/compile/20011130-1.c: Reorder to make
        the test case valid.
        * testsuite/gcc.dg/20030815-1.c: Remove invalid tests.
        * testsuite/gcc.dg/array-7.c: Adjust expected result.
        * testsuite/gcc.dg/pr18596-3.c: Likewise.
        * testsuite/gcc.dg/noncompile/20000901-1.c: Likewise.
        * testsuite/gcc.dg/noncompile/init-2.c: Likewise.
        * testsuite/gcc.dg/noncompile/init-4.c: Likewise.

From-SVN: r94505