From ef159096d1ce0fdd99125c17f2531e4407d059f4 Mon Sep 17 00:00:00 2001
From: shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 15 Aug 2007 19:36:03 +0000
Subject: 	* process.c (proc_exec_v, rb_proc_exec): preserve errno.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_5@12964 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 process.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'process.c')

diff --git a/process.c b/process.c
index 6064cd1142..00b557b379 100644
--- a/process.c
+++ b/process.c
@@ -117,6 +117,9 @@ static VALUE S_Tms;
 #endif
 #endif
 
+#define preserving_errno(stmts) \
+	do {int saved_errno = errno; stmts; errno = saved_errno;} while (0)
+
 
 /*
  *  call-seq:
@@ -989,7 +992,7 @@ proc_exec_v(argv, prog)
 #endif /* MSDOS or __human68k__ or __EMX__ */
     before_exec();
     execv(prog, argv);
-    after_exec();
+    preserving_errno(after_exec());
     return -1;
 }
 
@@ -1058,7 +1061,7 @@ rb_proc_exec(str)
 #else
 	    before_exec();
 	    execl("/bin/sh", "sh", "-c", str, (char *)NULL);
-	    after_exec();
+	    preserving_errno(after_exec());
 #endif
 #endif
 	    return -1;
-- 
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