From: Xinliang David Li <davidxl@google.com>
Date: Tue, 12 Oct 2010 22:32:00 +0000 (+0000)
Subject: fix pr/45972
X-Git-Tag: releases/gcc-4.6.0~3565
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=98d30e4fb5d73b248be75946e90ec2e73b397268;p=thirdparty%2Fgcc.git

fix pr/45972

From-SVN: r165402
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b58a88183125..9e11f72a6647 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2010-10-12  Xinliang David Li  <davidxl@google.com>
+
+	PR tree-optimization/45972
+	* gcc/tree-ssa-uninit.c (compute_uninit_opnds_pos): skip phis
+	with too many arguments.
+
 2010-10-12  Jakub Jelinek  <jakub@redhat.com>
 
 	PR fortran/45636
diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c
index 4398db7c6d2e..78b88e9bd934 100644
--- a/gcc/tree-ssa-uninit.c
+++ b/gcc/tree-ssa-uninit.c
@@ -149,6 +149,9 @@ compute_uninit_opnds_pos (gimple phi)
   unsigned uninit_opnds = 0;
 
   n = gimple_phi_num_args (phi);
+  /* Bail out for phi with too many args.  */
+  if (n > 32)
+    return 0;
 
   for (i = 0; i < n; ++i)
     {