From: H.J. Lu <hongjiu.lu@intel.com>
Date: Wed, 3 Aug 2011 14:44:54 +0000 (+0000)
Subject: Add a testcase for PR middle-end/47383.
X-Git-Tag: releases/gcc-4.7.0~4764
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ac88396b5e3bf22b4013339e7980a748d88eddf7;p=thirdparty%2Fgcc.git

Add a testcase for PR middle-end/47383.

2011-08-03  H.J. Lu  <hongjiu.lu@intel.com>

	PR middle-end/47383
	* gcc.dg/torture/pr47383.c: Likewise.

From-SVN: r177277
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2dc9a1dd4e4c..a157259099eb 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-08-03  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR middle-end/47383
+	* gcc.dg/torture/pr47383.c: Likewise.
+
 2011-08-03  Arnaud Charlet  <charlet@adacore.com>
 
 	* gnat.dg/specs/debug1.ads: Add missing -margs switch.
diff --git a/gcc/testsuite/gcc.dg/torture/pr47383.c b/gcc/testsuite/gcc.dg/torture/pr47383.c
new file mode 100644
index 000000000000..ae8d67051d49
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr47383.c
@@ -0,0 +1,30 @@
+/* { dg-do run } */
+
+static int heap[2*(256 +1+29)+1];
+static int heap_len;
+static int heap_max;
+void 
+__attribute__ ((noinline))
+foo (int elems)
+{
+  int n, m;
+  int max_code = -1;
+  int node = elems;
+  heap_len = 0, heap_max = (2*(256 +1+29)+1);
+  for (n = 0; n < elems; n++)
+    heap[++heap_len] = max_code = n;
+  do {
+    n = heap[1];
+    heap[1] = heap[heap_len--];
+    m = heap[1];
+    heap[--heap_max] = n;
+    heap[--heap_max] = m;
+  } while (heap_len >= 2);
+}
+
+int
+main ()
+{
+  foo (286);
+  return 0;
+}