From: Craig Burley <burley@gnu.org>
Date: Mon, 13 Jul 1998 22:21:01 +0000 (-0400)
Subject: stmt.c (expand_expr_stmt): If not assigning fresh value to last_expr_value...
X-Git-Tag: prereleases/egcs-1.1-prerelease~270
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b941bcbc1f5763e3c3576a50769c6ec65445e93c;p=thirdparty%2Fgcc.git

stmt.c (expand_expr_stmt): If not assigning fresh value to last_expr_value...

        * stmt.c (expand_expr_stmt): If not assigning fresh
        value to last_expr_value, zero it, so old garbage
        doesn't get dereferenced.

From-SVN: r21116
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6c55abf09440..2d78aacdc329 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+Mon Jul 13 23:18:39 1998  Craig Burley  <burley@gnu.org>
+
+	* stmt.c (expand_expr_stmt): If not assigning fresh
+	value to last_expr_value, zero it, so old garbage
+	doesn't get dereferenced.
+
 Mon Jul 13 23:06:55 1998  Henning.Petersen@t-online.de (Henning Petersen)
 
 	* gcse.c (hash_scan_insn): Add missing argument declaration.
diff --git a/gcc/stmt.c b/gcc/stmt.c
index 18ca944ee2d8..9ebe6705e0f6 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -1533,7 +1533,9 @@ expand_expr_stmt (exp)
     exp = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (exp)), exp);
 
   last_expr_type = TREE_TYPE (exp);
-  if (! flag_syntax_only || expr_stmts_for_value)
+  if (flag_syntax_only && ! expr_stmts_for_value)
+    last_expr_value = 0;
+  else
     last_expr_value = expand_expr (exp,
 				   (expr_stmts_for_value
 				    ? NULL_RTX : const0_rtx),