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, 52 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/20050307-1.c b/gcc/testsuite/gcc.dg/20050307-1.c
new file mode 100644
index 000000000..0e8dac69a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20050307-1.c
@@ -0,0 +1,52 @@
+/* PR target/20322 */
+
+extern void abort (void);
+
+typedef unsigned long T;
+typedef struct
+{
+  T a, b;
+  unsigned char c, d;
+} S;
+
+#define M (sizeof (T) * 4)
+
+S __attribute__((noinline))
+foo (T x, T y)
+{
+  S e;
+  T f[2], g;
+
+  e.b = (x & (~(T) 0 >> M)) * (y & (~(T) 0 >> M));
+  e.a = (x >> M) * (y >> M);
+
+  f[0] = (x & (~(T) 0 >> M)) * (y >> M);
+  f[1] = (x >> M) * (y & (~(T) 0 >> M));
+
+  g = e.b;
+  e.b += (f[0] & (~(T) 0 >> M)) << M;
+  if (e.b < g)
+    e.a++;
+
+  g = e.b;
+  e.b += (f[1] & (~(T) 0 >> M)) << M;
+  if (e.b < g)
+    e.a++;
+
+  e.a += (f[0] >> M);
+  e.a += (f[1] >> M);
+  e.c = 1;
+  e.d = 0;
+
+  return e;
+}
+
+int
+main (void)
+{
+  T x = 1UL << (M * 2 - 1);
+  S y = foo (1, x);
+  if (y.a || y.b != x || y.c != 1 || y.d)
+    abort ();
+  return 0;
+}