From: John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
Date: Fri, 28 May 2004 17:27:27 +0000 (+0000)
Subject: re PR bootstrap/14671 (caller-save.c:491: internal compiler error: Segmentation fault)
X-Git-Tag: releases/gcc-3.3.4~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0dc9ab2beda555432f58e3b17b7c1f1d4a63afd7;p=thirdparty%2Fgcc.git

re PR bootstrap/14671 (caller-save.c:491: internal compiler error: Segmentation fault)

	PR bootstrap/14671
	* alias.c (init_alias_analysis): Allocate alias_invariant array with
	ggc_alloc_cleared instead of xrealloc.
	(end_alias_analysis): Don't free alias_invariant.

From-SVN: r82371
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 31fcba844268..aa2183f5b98e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2004-05-28  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	PR bootstrap/14671
+	* alias.c (init_alias_analysis): Allocate alias_invariant array with
+	ggc_alloc_cleared instead of xrealloc.
+	(end_alias_analysis): Don't free alias_invariant.
+
 2004-05-27  Richard Henderson  <rth@redhat.com>
 
 	Backport from mainline:
diff --git a/gcc/alias.c b/gcc/alias.c
index e320a6f0efc6..abc98de7557a 100644
--- a/gcc/alias.c
+++ b/gcc/alias.c
@@ -2786,10 +2786,8 @@ init_alias_analysis ()
   reg_seen = (char *) xmalloc (reg_base_value_size);
   if (! reload_completed && flag_unroll_loops)
     {
-      /* ??? Why are we realloc'ing if we're just going to zero it?  */
-      alias_invariant = (rtx *)xrealloc (alias_invariant,
-					 reg_base_value_size * sizeof (rtx));
-      memset ((char *)alias_invariant, 0, reg_base_value_size * sizeof (rtx));
+      alias_invariant = (rtx *) ggc_alloc_cleared (reg_base_value_size
+						   * sizeof (rtx));
       alias_invariant_size = reg_base_value_size;
     }
 
@@ -2985,7 +2983,6 @@ end_alias_analysis ()
   reg_base_value_size = 0;
   if (alias_invariant)
     {
-      free (alias_invariant);
       alias_invariant = 0;
       alias_invariant_size = 0;
     }