1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/pr31246.C b/gcc/testsuite/g++.dg/warn/pr31246.C
new file mode 100644
index 000000000..a96dc96c1
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/pr31246.C
@@ -0,0 +1,10 @@
+// PR 31246
+// { dg-do compile }
+// { dg-options "-Wunreachable-code -D_GLIBCXX_DEBUG" }
+// { dg-xfail-if "lack of weak symbols" { alpha*-dec-osf* } }
+#include <vector>
+
+int main()
+{
+  std::vector<int>::iterator a;
+}