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, 59 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/noreturn-1.c b/gcc/testsuite/gcc.dg/noreturn-1.c
new file mode 100644
index 000000000..a3796783a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/noreturn-1.c
@@ -0,0 +1,59 @@
+/* Check for various valid and erroneous "noreturn" cases. */
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wmissing-noreturn" } */
+
+extern void exit (int);
+
+extern void foo1(void) __attribute__ ((__noreturn__));
+void
+foo1(void)
+{
+} /* { dg-warning "'noreturn' function does return" "detect falling off end of noreturn" } */
+
+extern void foo2(void) __attribute__ ((__noreturn__));
+void
+foo2(void)
+{
+  exit(0);
+} /* { dg-bogus "warning:" "this function should not get any warnings" } */
+
+extern void foo3(void);
+void
+foo3(void)
+{
+} /* { dg-bogus "warning:" "this function should not get any warnings" } */
+
+extern void foo4(void);
+void
+foo4(void) /* { dg-warning "candidate for attribute 'noreturn'" "detect noreturn candidate" } */
+{
+  exit(0);
+}
+
+extern void foo5(void) __attribute__ ((__noreturn__));
+void
+foo5(void)
+{
+  return; /* { dg-warning "'noreturn' has a 'return' statement" "detect invalid return" } */
+}         /* { dg-warning "function does return" "detect return from noreturn" { target c } 37 } */
+
+extern void foo6(void);
+void
+foo6(void)
+{
+  return;
+} /* { dg-bogus "warning:" "this function should not get any warnings" } */
+
+extern void foo7(void);
+void
+foo7(void)
+{
+  foo6();
+} /* { dg-bogus "warning:" "this function should not get any warnings" } */
+
+extern void foo8(void) __attribute__ ((__noreturn__));
+void
+foo8(void)
+{
+  foo7();
+} /* { dg-warning "'noreturn' function does return" "detect return from tail call" } */