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, 21 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr23518.c b/gcc/testsuite/gcc.dg/pr23518.c
new file mode 100644
index 000000000..3c6bd2754
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr23518.c
@@ -0,0 +1,21 @@
+/* PR tree-optimization/23518.
+   make_range used to transform a + 1 < 0 into a < -1 even when a is
+   signed and -fwrapv is given.  Make sure that no longer happens.  */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -fwrapv" } */
+
+#include <limits.h>
+
+extern void abort (void);
+extern void exit (int);
+
+int
+main (void)
+{
+  int a = INT_MAX;
+  if ((a < 0) || (a + 1 < 0))
+    exit (0);
+
+  abort ();
+}