1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr18921-1.c b/gcc/testsuite/gcc.dg/pr18921-1.c
new file mode 100644
index 000000000..b8c91aa09
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr18921-1.c
@@ -0,0 +1,20 @@
+/* PR middle-end/18921 */
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+extern void abort (void);
+
+int foo (int k)
+{
+  unsigned char j = 0;
+  (k ? 0 : j++) == -1;
+  return j;
+}
+
+int main ()
+{
+  if (!foo (0))
+    abort ();
+  return 0;
+}
+