re PR c/17807 (No warning/error for undefined local function.)
PR c/17807
* c-decl.c (undef_nested_function): New variable.
(pop_scope): Diagnose undefined nested functions.
(finish_function): Don't attempt cgraph processing or genericizing
if current top-level function contained an undefined nested
function. Reset undef_nested_function at the end of a top-level
function.
testsuite:
* gcc.dg/nested-func-3.c: New test.
* gcc.dg/pr18596-3.c: Expect error for undefined nested function.
From-SVN: r94645