akr	2008-12-23 22:59:10 +0900 (Tue, 23 Dec 2008)

  New Revision: 20951

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=20951

  Log:
    * process.c (rb_fork): don't propagete an error message if error
      buffer not given.

  Modified files:
    trunk/ChangeLog
    trunk/process.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 20950)
+++ ChangeLog	(revision 20951)
@@ -1,3 +1,8 @@
+Tue Dec 23 22:57:48 2008  Tanaka Akira  <akr@f...>
+
+	* process.c (rb_fork): don't propagete an error message if error
+	  buffer not given.
+
 Tue Dec 23 21:55:05 2008  Tanaka Akira  <akr@f...>
 
 	* process.c (rb_fork): propagete an error message from child to parent.
Index: process.c
===================================================================
--- process.c	(revision 20950)
+++ process.c	(revision 20951)
@@ -2477,8 +2477,10 @@
 #ifdef FD_CLOEXEC
 	    err = errno;
 	    write(ep[1], &err, sizeof(err));
-            errmsg[errmsg_buflen-1] = '\0';
-            write(ep[1], errmsg, strlen(errmsg));
+            if (errmsg && 0 < errmsg_buflen) {
+                errmsg[errmsg_buflen-1] = '\0';
+                write(ep[1], errmsg, strlen(errmsg));
+            }
 #endif
 #if EXIT_SUCCESS == 127
 	    _exit(EXIT_FAILURE);

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