1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr42237.c b/gcc/testsuite/gcc.c-torture/compile/pr42237.c
new file mode 100644
index 000000000..58db8660c
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr42237.c
@@ -0,0 +1,32 @@
+struct A
+{
+  int p;
+};
+
+struct B
+{
+  struct A n;
+  struct A m;
+  int x;
+  int y;
+  int z;
+};
+
+extern int g1, g2;
+
+static void __attribute__((noinline)) foo (struct B *b)
+{
+  int t;
+
+  t = b->n.p;
+  g1 = t;
+  b->n.p = t+1;
+  g2 = b->m.p;
+
+  b->m = b->n;
+}
+
+void bar (struct B *b)
+{
+  foo (b);
+}