1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/ext/vla9.C b/gcc/testsuite/g++.dg/ext/vla9.C
new file mode 100644
index 000000000..c58edbc9b
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/vla9.C
@@ -0,0 +1,38 @@
+// PR c++/43555
+// { dg-options "" }
+// { dg-do run }
+
+extern "C" void * malloc (__SIZE_TYPE__);
+extern "C" int printf (const char *, ...);
+extern "C" void abort(void);
+
+int nx,ny;
+
+void f(double *x1d,int choice)
+{
+  double (*x2d)[nx][ny]=(double(*)[nx][ny])x1d;
+  unsigned long delta;
+//  (*x2d)[0][0]=123; // <- this line affects the result
+  if (choice!=0)
+  {
+    delta=&(*x2d)[1][0]-x1d;
+  }
+  else
+  {
+    delta=&(*x2d)[1][0]-x1d;
+  }
+  printf("Choice: %d, Delta: %ld\n",choice,delta);
+  if (delta != ny)
+    abort ();
+}
+
+int main()
+{
+  double *data;
+  nx=100;
+  ny=100;
+  data=(double*)malloc(nx*ny*sizeof(double));
+  f(data,0);
+  f(data,1);
+  return 0;
+}