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, 34 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/20020213-1.c b/gcc/testsuite/gcc.c-torture/execute/20020213-1.c
new file mode 100644
index 000000000..f9fefee26
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20020213-1.c
@@ -0,0 +1,34 @@
+/* PR c/5681
+   This testcase failed on IA-32 at -O0, because safe_from_p
+   incorrectly assumed it is safe to first write into a.a2 b-1
+   and then read the original value from it.  */
+
+int bar (float);
+
+struct A {
+  float a1;
+  int a2;
+} a;
+
+int b;
+
+void foo (void)
+{
+  a.a2 = bar (a.a1);
+  a.a2 = a.a2 < b - 1 ? a.a2 : b - 1;
+  if (a.a2 >= b - 1)
+    abort ();
+}
+
+int bar (float x)
+{
+  return 2241;
+}
+
+int main()
+{
+  a.a1 = 1.0f;
+  b = 3384;
+  foo ();
+  return 0;
+}