From: J"orn Rennecke <joern.rennecke@st.com>
Date: Thu, 27 Jan 2005 12:57:41 +0000 (+0000)
Subject: re PR c++/18370 (cp_parser_initializer_list uninit variable problems)
X-Git-Tag: releases/gcc-3.4.4~266
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2a7d8f63729b776f4eec22770f9cc1ad92a424ec;p=thirdparty%2Fgcc.git

re PR c++/18370 (cp_parser_initializer_list uninit variable problems)

gcc:
	* real.c (do_add): Initialize signalling and canonical members.

	* real.c (real_from_integer): Zero out destination.
gcc/cp:
	PR c++/18370
	* parser.c (cp_parser_initializer_clause): Initialize *non_constant_p.

From-SVN: r94322
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b489880b9025..3ca24a7ab358 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-01-27  J"orn Rennecke <joern.rennecke@st.com>
+
+	* real.c (do_add): Initialize signalling and canonical members.
+
+	* real.c (real_from_integer): Zero out destination.
+
 2005-01-26  Ulrich Weigand  <uweigand@de.ibm.com>
 
 	Backport from mainline:
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 0103228ee003..869878c9d154 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2005-01-27  J"orn Rennecke <joern.rennecke@st.com>
+
+	PR c++/18370
+	* parser.c (cp_parser_initializer_clause): Initialize *non_constant_p.
+
 2005-01-19  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
 
 	PR c++/19375
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 1bde1f9830b7..46d6bbf157f4 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -11543,6 +11543,9 @@ cp_parser_initializer_clause (cp_parser* parser, bool* non_constant_p)
 {
   tree initializer = NULL_TREE;
 
+  /* Assume the expression is constant.  */
+  *non_constant_p = false;
+
   /* If it is not a `{', then we are looking at an
      assignment-expression.  */
   if (cp_lexer_next_token_is_not (parser->lexer, CPP_OPEN_BRACE))
diff --git a/gcc/real.c b/gcc/real.c
index 11927ee59cf8..843725e55909 100644
--- a/gcc/real.c
+++ b/gcc/real.c
@@ -640,6 +640,9 @@ do_add (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
   r->class = rvc_normal;
   r->sign = sign;
   r->exp = exp;
+  /* Zero out the remaining fields.  */
+  r->signalling = 0;
+  r->canonical = 0;
 
   /* Re-normalize the result.  */
   normalize (r);
@@ -1960,6 +1963,7 @@ real_from_integer (REAL_VALUE_TYPE *r, enum machine_mode mode,
     get_zero (r, 0);
   else
     {
+      memset (r, 0, sizeof (*r));
       r->class = rvc_normal;
       r->sign = high < 0 && !unsigned_p;
       r->exp = 2 * HOST_BITS_PER_WIDE_INT;
@@ -1977,7 +1981,6 @@ real_from_integer (REAL_VALUE_TYPE *r, enum machine_mode mode,
 	{
 	  r->sig[SIGSZ-1] = high;
 	  r->sig[SIGSZ-2] = low;
-	  memset (r->sig, 0, sizeof(long)*(SIGSZ-2));
 	}
       else if (HOST_BITS_PER_LONG*2 == HOST_BITS_PER_WIDE_INT)
 	{
@@ -1985,8 +1988,6 @@ real_from_integer (REAL_VALUE_TYPE *r, enum machine_mode mode,
 	  r->sig[SIGSZ-2] = high;
 	  r->sig[SIGSZ-3] = low >> (HOST_BITS_PER_LONG - 1) >> 1;
 	  r->sig[SIGSZ-4] = low;
-	  if (SIGSZ > 4)
-	    memset (r->sig, 0, sizeof(long)*(SIGSZ-4));
 	}
       else
 	abort ();