1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr37056.c b/gcc/testsuite/gcc.c-torture/compile/pr37056.c
new file mode 100644
index 000000000..f9285e2c7
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr37056.c
@@ -0,0 +1,28 @@
+extern void abort (void);
+
+static union {
+    char buf[12 * sizeof (long long)];
+} u;
+
+int main ()
+{
+  int off, len, i;
+  char *p, *q;
+
+  for (off = 0; off < (sizeof (long long)); off++)
+    for (len = 1; len < (10 * sizeof (long long)); len++)
+      {
+	for (i = 0; i < (12 * sizeof (long long)); i++)
+	  u.buf[i] = 'a';
+	p = (__extension__ (__builtin_constant_p ('\0') && ('\0') == '\0'
+			    ? ({void *__s = (u.buf + off); __s;})
+			    : __builtin_memset (u.buf + off, '\0', len)));
+	if (p != u.buf + off)
+	  abort ();
+	for (i = 0; i < off; i++, q++)
+	  if (*q != 'a')
+	    abort ();
+      }
+  return 0;
+}
+