1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/Wstrict-overflow-12.c b/gcc/testsuite/gcc.dg/Wstrict-overflow-12.c
new file mode 100644
index 0000000..177904d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wstrict-overflow-12.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=2" } */
+
+/* Source: Ian Lance Taylor.  Dual of no-strict-overflow-6.c.  */
+
+/* VRP test.  This turns into an infinite loop when using strict
+   overflow semantics.  */
+
+int
+foo ()
+{
+  int i, bits;
+  for (i = 1, bits = 1; i > 0; i += i) /* { dg-warning "assuming signed overflow does not occur" "correct warning" } */
+    ++bits;
+  return bits;
+}