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, 75 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/20030804-1.c b/gcc/testsuite/gcc.dg/20030804-1.c
new file mode 100644
index 000000000..cbc66474a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20030804-1.c
@@ -0,0 +1,75 @@
+/* Copyright (C) 2003 Free Software Foundation.
+
+   Check that constant folding of mathematical expressions doesn't
+   break anything.
+
+   Written by Roger Sayle, 3rd August 2003.  */
+
+/* { dg-do link } */
+/* { dg-options "-O2 -ffast-math" } */
+
+extern void link_error(void);
+
+void test(double x)
+{
+  if (x+x != 2.0*x)
+    link_error ();
+  if (x+x != x*2.0)
+    link_error ();
+
+  if (x+x+x != 3.0*x)
+    link_error ();
+  if (x+x+x != x*3.0)
+    link_error ();
+
+  if ((x+x)+x != 3.0*x)
+    link_error ();
+  if ((x+x)+x != x*3.0)
+    link_error ();
+
+  if (x+(x+x) != 3.0*x)
+    link_error ();
+  if (x+(x+x) != x*3.0)
+    link_error ();
+
+  if (x+4.0*x != 5.0*x)
+    link_error ();
+  if (x+4.0*x != x*5.0)
+    link_error ();
+  if (x+x*4.0 != 5.0*x)
+    link_error ();
+  if (x+x*4.0 != x*5.0)
+    link_error ();
+  if (4.0*x+x != 5.0*x)
+    link_error ();
+  if (4.0*x+x != x*5.0)
+    link_error ();
+  if (x*4.0+x != 5.0*x)
+    link_error ();
+  if (x*4.0+x != x*5.0)
+    link_error ();
+
+  if (3.0*x + 5.0*x != 8.0*x)
+    link_error ();
+  if (3.0*x + 5.0*x != x*8.0)
+    link_error ();
+  if (x*3.0 + 5.0*x != 8.0*x)
+    link_error ();
+  if (x*3.0 + 5.0*x != x*8.0)
+    link_error ();
+  if (3.0*x + x*5.0 != 8.0*x)
+    link_error ();
+  if (3.0*x + x*5.0 != x*8.0)
+    link_error ();
+  if (x*3.0 + x*5.0 != 8.0*x)
+    link_error ();
+  if (x*3.0 + x*5.0 != x*8.0)
+    link_error ();
+}
+
+int main()
+{
+  test(2.0);
+  return 0;
+}
+