From 71575d1a52c48ff83a6a367a498ed2805d3a5140 Mon Sep 17 00:00:00 2001
From: Eric Blake <ebb9@byu.net>
Date: Tue, 10 Oct 2006 03:00:55 +0000
Subject: [PATCH] * src/path.c (include_env_init): Copy the string returned by
 getenv before overwriting it; POSIX disallows this.

---
 ChangeLog  | 5 +++++
 src/path.c | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index daac0e28..08356467 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-10-09  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* src/path.c (include_env_init): Copy the string returned
+	by getenv before overwriting it; POSIX disallows this.
+
 2006-10-09  Eric Blake  <ebb9@byu.net>
 
 	* src/m4.c (main): Defer debugfile until after --help.
diff --git a/src/path.c b/src/path.c
index ca604142..3867c7d9 100644
--- a/src/path.c
+++ b/src/path.c
@@ -58,6 +58,7 @@ include_env_init (void)
   path = getenv ("M4PATH");
   if (path == NULL)
     return;
+  path = xstrdup (path);
 
   do
     {
@@ -68,6 +69,7 @@ include_env_init (void)
       path = path_end + 1;
     }
   while (path_end);
+  free (path);
 }
 
 void
-- 
2.11.4.GIT