+2012-06-21 Meador Inge <meadori@codesourcery.com>
+
+ PR c/53702
+ * c-decl.c (c_push_function_context): Restore the behavior to reuse
+ the language function allocated for -Wunused-local-typedefs.
+ (c_pop_function_context): If necessary, clear the language function
+ created in c_push_function_context. Always clear out the
+ x_cur_stmt_list field of the restored language function.
+
2012-06-21 Sterling Augustine <saugustine@google.com>
Cary Coutant <ccoutant@google.com>
void
c_push_function_context (void)
{
- struct language_function *p;
- p = ggc_alloc_language_function ();
- cfun->language = p;
+ struct language_function *p = cfun->language;
+ /* cfun->language might have been already allocated by the use of
+ -Wunused-local-typedefs. In that case, just re-use it. */
+ if (p == NULL)
+ cfun->language = p = ggc_alloc_cleared_language_function ();
p->base.x_stmt_tree = c_stmt_tree;
c_stmt_tree.x_cur_stmt_list
pop_function_context ();
p = cfun->language;
- cfun->language = NULL;
+
+ /* When -Wunused-local-typedefs is in effect, cfun->languages is
+ used to store data throughout the life time of the current cfun,
+ So don't deallocate it. */
+ if (!warn_unused_local_typedefs)
+ cfun->language = NULL;
if (DECL_STRUCT_FUNCTION (current_function_decl) == 0
&& DECL_SAVED_TREE (current_function_decl) == NULL_TREE)
}
c_stmt_tree = p->base.x_stmt_tree;
+ p->base.x_stmt_tree.x_cur_stmt_list = NULL;
c_break_label = p->x_break_label;
c_cont_label = p->x_cont_label;
c_switch_stack = p->x_switch_stack;
+2012-06-21 Meador Inge <meadori@codesourcery.com>
+
+ PR c/53702
+ * gcc.dg/Wunused-local-typedefs.c: New testcase.
+
2012-06-21 Steven Bosscher <steven@gcc.gnu.org>
* testsuite/gcc.dg/pch/ident-1.c: New test.
--- /dev/null
+/* Origin PR c/53702
+ { dg-options "-Wunused-local-typedefs" }
+ { dg-do compile }
+*/
+
+/* Only test nested functions for C. More tests that work for C and C++
+ can be found in c-c++-common.
+*/
+
+void
+test0 ()
+{
+ typedef int foo; /* { dg-warning "locally defined but not used" } */
+ void f ()
+ {
+ }
+}
+
+void
+test1 ()
+{
+ void f ()
+ {
+ typedef int foo; /* { dg-warning "locally defined but not used" } */
+ }
+}
+
+
+void
+test2 ()
+{
+ void f ()
+ {
+ }
+ typedef int foo; /* { dg-warning "locally defined but not used" } */
+}