1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/expr/bitfield8.C b/gcc/testsuite/g++.dg/expr/bitfield8.C
new file mode 100644
index 000000000..566109cdd
--- /dev/null
+++ b/gcc/testsuite/g++.dg/expr/bitfield8.C
@@ -0,0 +1,24 @@
+// PR c++/31513
+// { dg-do run }
+
+extern "C" void abort();
+
+struct tree_type {
+  unsigned int precision : 9;
+};
+
+void bork(unsigned int i) {
+  if (i != 7)
+    abort();
+}
+
+void foo(struct tree_type *t)
+{
+  bork(t->precision);
+}
+
+int main() {
+  tree_type t;
+  t.precision = 7;
+  foo(&t);
+}