3 files changed, 61 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 628551e7948..65d84e7c164 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2003-05-31  Roger Sayle  <roger@eyesopen.com>
+
+	* gcc.dg/fwrapv-1.c: New test case.
+	* gcc.dg/fwrapv-2.c: New test case.
+
 2003-05-31  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
 
 	PR c++/10956
diff --git a/gcc/testsuite/gcc.dg/fwrapv-1.c b/gcc/testsuite/gcc.dg/fwrapv-1.c
new file mode 100644
index 00000000000..f7ddda4a3b6
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/fwrapv-1.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 2003 Free Software Foundation.
+
+   Test that the -fwrapv command line option is accepted and disables
+   "unsafe" optimizations that rely on undefined arithmetic overflow.
+
+   Written by Roger Sayle, 24th March 2003.  */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -fwrapv" } */
+
+#include <limits.h>
+
+extern void abort ();
+
+int test(int x)
+{
+  return (2*x)/2;
+}
+
+main()
+{
+  int x = INT_MAX;
+
+  if (test(x) == x)
+    abort ();
+  return 0;
+}
+
diff --git a/gcc/testsuite/gcc.dg/fwrapv-2.c b/gcc/testsuite/gcc.dg/fwrapv-2.c
new file mode 100644
index 00000000000..cb4270e0ee2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/fwrapv-2.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 2003 Free Software Foundation.
+
+   Test that the -fno-wrapv command line option is accepted and enables
+   "unsafe" optimizations that rely on undefined arithmetic overflow.
+
+   Written by Roger Sayle, 31st May 2003.  */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -fno-wrapv" } */
+
+#include <limits.h>
+
+extern void abort ();
+
+int test(int x)
+{
+  return (2*x)/2;
+}
+
+main()
+{
+  int x = INT_MAX;
+
+  if (test(x) != x)
+    abort ();
+  return 0;
+}
+