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, 41 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/pr16790-1.c b/gcc/testsuite/gcc.c-torture/execute/pr16790-1.c
new file mode 100644
index 000000000..dc6a77404
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr16790-1.c
@@ -0,0 +1,41 @@
+/* PR middle-end/16790.  */
+
+extern void abort ();
+
+static void test1(unsigned int u1)
+{
+  unsigned int y_final_1;
+  signed short y_middle;
+  unsigned int y_final_2;
+
+  y_final_1 = (unsigned int)( (signed short)(u1 * 2) * 3 );
+  y_middle  =                 (signed short)(u1 * 2);
+  y_final_2 = (unsigned int)( y_middle * 3 );
+
+  if (y_final_1 != y_final_2)
+    abort ();
+}
+
+
+static void test2(unsigned int u1)
+{
+  unsigned int y_final_1;
+  signed short y_middle;
+  unsigned int y_final_2;
+
+  y_final_1 = (unsigned int)( (signed short)(u1 << 1) * 3 );
+  y_middle  =                 (signed short)(u1 << 1);
+  y_final_2 = (unsigned int)( y_middle * 3 );
+
+  if (y_final_1 != y_final_2)
+    abort ();
+}
+
+
+int main()
+{
+  test1(0x4000U);
+  test2(0x4000U);
+  return 0;
+}
+