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, 46 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/torture/stackalign/setjmp-2.c b/gcc/testsuite/gcc.dg/torture/stackalign/setjmp-2.c
new file mode 100644
index 000000000..c93ffa867
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/stackalign/setjmp-2.c
@@ -0,0 +1,46 @@
+/* { dg-do run { target i?86-*-linux* x86_64-*-linux* } } */
+
+#include <setjmp.h>
+#include <signal.h>
+
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+static jmp_buf segv_jmpbuf;
+
+static void segv_handler(int seg)
+{
+   __builtin_longjmp(segv_jmpbuf, 1);
+}
+
+static int is_addressable(void *p, size_t size)
+{
+   volatile char * volatile cp = (volatile char *)p;
+   volatile int ret;
+   struct sigaction sa, origsa;
+   sigset_t mask;
+   
+   sa.sa_handler = segv_handler;
+   sa.sa_flags = 0;
+   sigfillset(&sa.sa_mask);
+   sigaction(SIGSEGV, &sa, &origsa);
+   sigprocmask(SIG_SETMASK, NULL, &mask);
+
+   if (__builtin_setjmp(segv_jmpbuf) == 0) {
+      while(size--)
+	 *cp++;
+      ret = 1;
+    } else
+      ret = 0;
+
+   sigaction(SIGSEGV, &origsa, NULL);
+   sigprocmask(SIG_SETMASK, &mask, NULL);
+
+   return ret;
+}
+
+int main(int argc, char **argv)
+{
+   is_addressable(0x0, 1);
+   return 0;
+}