From: Manuel López-Ibáñez <manu@gcc.gnu.org>
Date: Thu, 28 Aug 2008 00:00:49 +0000 (+0000)
Subject: re PR c++/37217 (-Wconversion causes ICE with __builtin_strcmp with one char compare)
X-Git-Tag: releases/gcc-4.4.0~2850
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1bfb8f513f3d5af5a967b6860b0eb642e738de0c;p=thirdparty%2Fgcc.git

re PR c++/37217 (-Wconversion causes ICE with __builtin_strcmp with one char compare)

2008-08-27  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	PR 37217
	* c-common.c (conversion_warning): Check for null operands.
testsuite/
	* gcc.dg/pr37217.c: New.

From-SVN: r139682
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 63b1981daae6..4175e0232511 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-08-27  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	PR 37217
+	* c-common.c (convesion_warning): Check for null operands.
+
 2008-08-27  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
 
 	PR c/31673
diff --git a/gcc/c-common.c b/gcc/c-common.c
index d06c96940f41..e0a0829ec58e 100644
--- a/gcc/c-common.c
+++ b/gcc/c-common.c
@@ -1568,7 +1568,7 @@ conversion_warning (tree type, tree expr)
   for (i = 0; i < expr_num_operands; i++)
     {
       tree op = TREE_OPERAND (expr, i);
-      if (DECL_P (op) && DECL_ARTIFICIAL (op))
+      if (op && DECL_P (op) && DECL_ARTIFICIAL (op))
 	return;
     }
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d5d73d74a0c1..707ccb7431d5 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2008-08-27  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	PR 37217
+	* gcc.dg/pr37217.c: New.
+
 2008-08-27  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
 
 	PR c/31673
diff --git a/gcc/testsuite/gcc.dg/pr37217.c b/gcc/testsuite/gcc.dg/pr37217.c
new file mode 100644
index 000000000000..989eda2cd88b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr37217.c
@@ -0,0 +1,10 @@
+/* PR 37217 ICE with -Wconversion */
+/* { dg-do compile } */
+/* { dg-options "-Wconversion" } */
+typedef struct Tcl_ResolvedVarInfo {
+  char *re_guts;
+} regex_t;
+void TclReComp(regex_t *re)
+{
+  if (re->re_guts == ((void *)0)) ;
+}