[PATCH] tests: avoid c++ failure due to lack of getenv decl

[Jim Meyering]

I noticed that there was a single test failure when
running "make check" using the latest gcc/g++ from git (4.7.x).

Pushed to master, as obvious:

>From 292402a9b2a9fe3440008e42a41b01185d9a4f9d Mon Sep 17 00:00:00 2001
From: Jim Meyering <address@hidden>
Date: Thu, 16 Feb 2012 11:03:31 +0100
Subject: [PATCH] tests: avoid c++ failure due to lack of getenv decl

* tests/c++.at (Syntax error as exception): Avoid spurious failure
at least when compiling with g++-4.7.x due to lack of declaration
of getenv.  Include <stdlib.h>.
---
 tests/c++.at |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/c++.at b/tests/c++.at
index d29b6f6..3510498 100644
--- a/tests/c++.at
+++ b/tests/c++.at
@@ -461,6 +461,7 @@ AT_DATA_GRAMMAR([[input.yy]],

 %code
 {
+  #include <stdlib.h>
   int yylex (yy::parser::semantic_type *);
 }

@@ -510,7 +511,7 @@ yy::parser::error (const std::string &m)
 }

 int
-main ()
+main (void)
 {
   yy::parser parser;
   parser.set_debug_level(!!getenv("YYDEBUG"));
--
1.7.9.1.232.g1a183