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, 58 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/20101011-1.c b/gcc/testsuite/gcc.c-torture/execute/20101011-1.c
new file mode 100644
index 000000000..7180e68b0
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20101011-1.c
@@ -0,0 +1,58 @@
+/* With -fnon-call-exceptions 0 / 0 should not be eliminated.  The .x
+   file sets the option.  */
+
+#ifdef SIGNAL_SUPPRESS
+# define DO_TEST 0
+#elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (__POWERPC__) || defined (__ppc)
+  /* On PPC division by zero does not trap.  */
+# define DO_TEST 0
+#elif defined (__SPU__)
+  /* On SPU division by zero does not trap.  */
+# define DO_TEST 0
+#elif defined (__sh__)
+  /* On SH division by zero does not trap.  */
+# define DO_TEST 0
+#elif defined (__mips__) && !defined(__linux__)
+  /* MIPS divisions do trap by default, but libgloss targets do not
+     intercept the trap and raise a SIGFPE.  The same is probably
+     true of other bare-metal environments, so restrict the test to
+     systems that use the Linux kernel.  */
+# define DO_TEST 0
+#elif defined (__mips16) && defined(__linux__)
+  /* Not all Linux kernels deal correctly the breakpoints generated by
+     MIPS16 divisions by zero.  They show up as a SIGTRAP instead.  */
+# define DO_TEST 0
+#else
+# define DO_TEST 1
+#endif
+
+#if DO_TEST
+
+#include <signal.h>
+
+void
+sigfpe (int signum __attribute__ ((unused)))
+{
+  exit (0);
+}
+
+#endif
+
+/* When optimizing, the compiler is smart enough to constant fold the
+   static unset variables i and j to produce 0 / 0, but it can't
+   eliminate the assignment to the global k.  */
+static int i;
+static int j;
+int k;
+
+int
+main ()
+{
+#if DO_TEST
+  signal (SIGFPE, sigfpe);
+  k = i / j;
+  abort ();
+#else
+  exit (0);
+#endif
+}