From d69167ce95371c38f13fdc562b8d19a13332b4a6 Mon Sep 17 00:00:00 2001
From: rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 11 Aug 2004 04:00:04 +0000
Subject: [PATCH] * stor-layout.c (round_up): Check for 0/1 before
dividing. (round_down): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@85792 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/ChangeLog | 3 +++
gcc/stor-layout.c | 10 ++++++++++
2 files changed, 13 insertions(+)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0c7b2e7f934c..a51da9b73107 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
2004-08-10 Richard Henderson <rth@redhat.com>
+ * stor-layout.c (round_up): Check for 0/1 before dividing.
+ (round_down): Likewise.
+
* tree-tailcall.c (suitable_for_tail_opt_p): Also check DECL_EXTERNAL.
2004-08-09 Mark Mitchell <mark@codesourcery.com>
diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c
index 772177077f2b..3a0acd707259 100644
--- a/gcc/stor-layout.c
+++ b/gcc/stor-layout.c
@@ -277,6 +277,11 @@ round_up (tree value, int divisor)
{
tree t;
+ if (divisor == 0)
+ abort ();
+ if (divisor == 1)
+ return value;
+
/* If divisor is a power of two, simplify this to bit manipulation. */
if (divisor == (divisor & -divisor))
{
@@ -302,6 +307,11 @@ round_down (tree value, int divisor)
{
tree t;
+ if (divisor == 0)
+ abort ();
+ if (divisor == 1)
+ return value;
+
/* If divisor is a power of two, simplify this to bit manipulation. */
if (divisor == (divisor & -divisor))
{
--
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