1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/other/pr42645-1.C b/gcc/testsuite/g++.dg/other/pr42645-1.C
new file mode 100644
index 000000000..5dc76f9ef
--- /dev/null
+++ b/gcc/testsuite/g++.dg/other/pr42645-1.C
@@ -0,0 +1,26 @@
+// PR tree-optimization/42645
+// { dg-do compile }
+// { dg-options "-fcompare-debug -O1" }
+
+extern void foo ();
+
+struct S
+{
+  struct T
+  {
+    int t1;
+    char t2[4];
+    T *t3;
+  } t;
+  int m1 () const { return t.t3[0].t1; }
+  char *m2 () { foo (); }
+  void m3 (int x) { char *m = m2 (); if (m1 () > 0 && x > 0); }
+  void m4 () { if (m1 () > 0) for (int i = 0; i < 4; i++) t.t2[i] = 0; }
+};
+
+void
+f (S *a)
+{
+  a->m3 (0);
+  a->m4 ();
+}