From b30ea1387f8e26ad60bd4d71ba2006ea7e11a6ee Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 27 Jan 2015 09:26:13 +0100
Subject: re PR tree-optimization/64807 (Wrong-code because of wide-int
 division)

	PR tree-optimization/64807
	* wide-int.cc (wi::divmod_internal): Clear
	b_dividend[dividend_blocks_needed].

	* gcc.dg/pr64807.c: New test.

From-SVN: r220153
---
 gcc/wide-int.cc | 1 +
 1 file changed, 1 insertion(+)

(limited to 'gcc/wide-int.cc')

diff --git a/gcc/wide-int.cc b/gcc/wide-int.cc
index 1143b48..fd7cbb4 100644
--- a/gcc/wide-int.cc
+++ b/gcc/wide-int.cc
@@ -1819,6 +1819,7 @@ wi::divmod_internal (HOST_WIDE_INT *quotient, unsigned int *remainder_len,
 	     divisor_blocks_needed, divisor_prec, sgn);
 
   m = dividend_blocks_needed;
+  b_dividend[m] = 0;
   while (m > 1 && b_dividend[m - 1] == 0)
     m--;
 
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