obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 42 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/noreturn-7.c b/gcc/testsuite/gcc.dg/noreturn-7.c
new file mode 100644
index 000000000..fd2be2d56
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/noreturn-7.c
@@ -0,0 +1,42 @@
+/* PR optimization/13394 */
+/* Origin: Carlo Wood <carlo@gcc.gnu.org> */
+
+/* Verify that a bogus "function does return" warning is not issued
+   in presence of tail recursion within a noreturn function.  */
+
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wreturn-type -Wmissing-noreturn" } */
+
+
+void f(void) __attribute__ ((__noreturn__));
+void _exit(int status) __attribute__ ((__noreturn__));
+
+int z = 0;
+
+void g() /* { dg-warning "might be candidate" } */
+{
+  if (++z > 10)
+    _exit(0);
+  g();
+}
+
+void f()
+{
+  if (++z > 10)
+    _exit(0);
+  f();
+}             /* { dg-bogus "does return" } */
+
+int h() /* { dg-warning "might be candidate" } */
+{
+  if (++z > 10)
+    _exit(0);
+  return h();
+}             /* { dg-bogus "end of non-void function" } */
+
+int k() /* { dg-warning "might be candidate" } */
+{
+  if (++z > 10)
+    _exit(0);
+  k();
+}             /* { dg-warning "control reaches" } */