From: John Carr <jfc@mit.edu>
Date: Fri, 5 Jun 1998 06:06:22 +0000 (+0000)
Subject: * alias.c (find_base_value): Avoid reading past	end of reg_base_value.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=74186471a00b676f632d885f3edad99eecb1b2e8;p=gcc.git

* alias.c (find_base_value): Avoid reading past	end of reg_base_value.

From-SVN: r20240
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4cc35197b73..cf20fa34341 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jun  5 09:03:22 1998  John Carr  <jfc@mit.edu>
+
+	* alias.c (find_base_value): Avoid reading past	end of reg_base_value.
+
 Fri Jun  5 03:05:34 1998  Richard Henderson  <rth@cygnus.com>
 
 	* alpha.md (insxh-1): New insxl pattern for combine.
diff --git a/gcc/alias.c b/gcc/alias.c
index 4e55cd4fe2d..8b99a0bcf70 100644
--- a/gcc/alias.c
+++ b/gcc/alias.c
@@ -129,6 +129,7 @@ find_base_value (src)
 	 The test above is not sufficient because the scheduler may move
 	 a copy out of an arg reg past the NOTE_INSN_FUNCTION_BEGIN.  */
       if (REGNO (src) >= FIRST_PSEUDO_REGISTER
+	  && REGNO (src) < reg_base_value_size
 	  && reg_base_value[REGNO (src)])
 	return reg_base_value[REGNO (src)];