From: Tom de Vries <tom@codesourcery.com>
Date: Fri, 11 Jan 2013 23:39:18 +0000 (+0000)
Subject: re PR tree-optimization/55890 (calling a builtin func through a cast triggers an... 
X-Git-Tag: releases/gcc-4.8.0~973
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b3681f139f37e59a699a21aca1b51bc70486ffda;p=thirdparty%2Fgcc.git

re PR tree-optimization/55890 (calling a builtin func through a cast triggers an ICE)

2013-01-12  Tom de Vries  <tom@codesourcery.com>

	PR middle-end/55890
	* calls.c (expand_call): Check if arg_nr is valid.

From-SVN: r195119
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e5e2b8e8a4cb..295e266499d0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2013-01-12  Tom de Vries  <tom@codesourcery.com>
+
+	PR middle-end/55890
+	* calls.c (expand_call): Check if arg_nr is valid.
+
 2013-01-11  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	* doc/extend.texi (X86 Built-in Functions): Add whitespace in
diff --git a/gcc/calls.c b/gcc/calls.c
index 94628afd1e8a..dd034b400992 100644
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -3134,7 +3134,9 @@ expand_call (tree exp, rtx target, int ignore)
 	  int arg_nr = return_flags & ERF_RETURN_ARG_MASK;
 	  if (PUSH_ARGS_REVERSED)
 	    arg_nr = num_actuals - arg_nr - 1;
-	  if (args[arg_nr].reg
+	  if (arg_nr >= 0
+	      && arg_nr < num_actuals
+	      && args[arg_nr].reg
 	      && valreg
 	      && REG_P (valreg)
 	      && GET_MODE (args[arg_nr].reg) == GET_MODE (valreg))