From: Mark Mitchell <mmitchel@gcc.gnu.org>
Date: Fri, 24 Jun 2005 13:52:35 +0000 (+0000)
Subject: re PR tree-optimization/22171 (gcc-4.0-20050623 internal compiler error in linux... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=707db096bc8f28e546af88dc4772db4fb688cb04;p=gcc.git

re PR tree-optimization/22171 (gcc-4.0-20050623 internal compiler error in linux/drivers/serial/8250.c)

	PR 22171
	* tree-ssa-operands (get_expr_operands): Check s_ann for NULL
	before use.

From-SVN: r101293
---

diff --git a/gcc/tree-ssa-operands.c b/gcc/tree-ssa-operands.c
index 2e263cfa1b3..ecd32a6b4f0 100644
--- a/gcc/tree-ssa-operands.c
+++ b/gcc/tree-ssa-operands.c
@@ -1347,7 +1347,7 @@ get_expr_operands (tree stmt, tree *expr_p, int flags)
 	
 	if (code == COMPONENT_REF)
 	  {
-	    if (TREE_THIS_VOLATILE (TREE_OPERAND (expr, 1)))
+	    if (s_ann && TREE_THIS_VOLATILE (TREE_OPERAND (expr, 1)))
 	      s_ann->has_volatile_ops = true; 
 	    get_expr_operands (stmt, &TREE_OPERAND (expr, 2), opf_none);
 	  }