1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr21085.c b/gcc/testsuite/gcc.dg/pr21085.c
new file mode 100644
index 000000000..6a51adb90
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr21085.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* This used to cause excessive use, or a stack overflow, depending on which
+   came first.  */
+void foo (void)
+{
+  int maxstringlen = 1;
+  int limit = 0, maxblock = 0, maxblockrem = 0;
+  maxblockrem = (maxstringlen) % (2147483647 + 1); /* { dg-warning "overflow" } */
+}