Date: Mon, 10 May 2010 22:25:40 +0200
From: Mikael Pettersson <mikpe at it dot uu dot se>
Subject: [PATCH] fix Wunused-parm-3.C test suite failure on ARM EABI
List-Archive: <http://gcc.gnu.org/ml/gcc-patches/>

The Wunused-parm-3.C test case added recently as part of the C++ support
for -Wunused-but-set-{variable,parameter} fails unnecessarily on ARM EABI
because it uses va_list and gcc warns about a mangling change:

/home/mikpe/gcc-4.6-20100508/gcc/testsuite/g++.dg/warn/Wunused-parm-3.C: In instantiation of 'T fn5(va_list) [with T = int, va_list = __va_list]':
/home/mikpe/gcc-4.6-20100508/gcc/testsuite/g++.dg/warn/Wunused-parm-3.C:56:23:   instantiated from here
/home/mikpe/gcc-4.6-20100508/gcc/testsuite/g++.dg/warn/Wunused-parm-3.C:48:1: note: the mangling of 'va_list' has changed in GCC 4.4

FAIL: g++.dg/warn/Wunused-parm-3.C (test for excess errors)

The standard fix for this is to silence the warning by passing -Wno-psabi
on ARM EABI.  The patch below does that and has been verified to eliminate
this regression on armv5tel-unknown-linux-gnueabi.

Ok for trunk? (I don't have svn write access.)

gcc/testsuite/

2010-05-10  Mikael Pettersson  <mikpe@it.uu.se>

	PR c/18624
	* g++.dg/warn/Wunused-parm-3.C: Append -Wno-psabi to
	options on arm_eabi targets.

--- gcc-4.6-20100508/gcc/testsuite/g++.dg/warn/Wunused-parm-3.C.~1~	2010-05-06 08:52:30.000000000 +0200
+++ gcc-4.6-20100508/gcc/testsuite/g++.dg/warn/Wunused-parm-3.C	2010-05-10 21:34:43.000000000 +0200
@@ -1,5 +1,6 @@
 // { dg-do compile }
 // { dg-options "-Wunused -W" }
+// { dg-options "-Wunused -W -Wno-psabi" { target arm_eabi } }
 
 #include <stdarg.h>