From: Bruno Haible <bruno@clisp.org>
Date: Sat, 22 Oct 2011 12:25:26 +0000 (+0200)
Subject: perror: Recognize when test program crashes.
X-Git-Tag: v0.1~1542
X-Git-Url: https://erislabs.net/gitweb/?a=commitdiff_plain;h=b3609c143bda48f4770412e689443601527f8e5b;p=gnulib.git

perror: Recognize when test program crashes.

* m4/perror.m4 (gl_FUNC_PERROR): If the test program crashes due to
strerror, set gl_cv_func_perror_works to no.
Reported by Daniel Richard G. <skunk@iskunk.org>.
---

diff --git a/ChangeLog b/ChangeLog
index 5e37e704f..7f591a2af 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2011-10-22  Bruno Haible  <bruno@clisp.org>
 
+	perror: Recognize when test program crashes.
+	* m4/perror.m4 (gl_FUNC_PERROR): If the test program crashes due to
+	strerror, set gl_cv_func_perror_works to no.
+	Reported by Daniel Richard G. <skunk@iskunk.org>.
+
 	perror: Fix indentation.
 	* m4/perror.m4 (gl_FUNC_PERROR): Fix indentation.
 
diff --git a/m4/perror.m4 b/m4/perror.m4
index 6a2d9b242..cb17ba38b 100644
--- a/m4/perror.m4
+++ b/m4/perror.m4
@@ -1,4 +1,4 @@
-# perror.m4 serial 5
+# perror.m4 serial 6
 dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -36,9 +36,10 @@ AC_DEFUN([gl_FUNC_PERROR],
                 puts (str);
                 errno = -1;
                 perror ("");
+                return 0;
               ]])],
-           [CONFTEST_OUTPUT=1 ./conftest$EXEEXT >conftest.txt1 2>conftest.txt2
-            if cmp conftest.txt1 conftest.txt2 >/dev/null; then
+           [if CONFTEST_OUTPUT=1 ./conftest$EXEEXT >conftest.txt1 2>conftest.txt2 \
+               && cmp conftest.txt1 conftest.txt2 >/dev/null; then
               gl_cv_func_perror_works=yes
             else
               gl_cv_func_perror_works=no