gnu/77818: GDB locks in wait4() when running applications

Seán C. Farley sean-freebsd at
Fri May 13 05:50:08 GMT 2005

The following reply was made to PR gnu/77818; it has been noted by GNATS.

From: =?ISO-8859-1?Q?Se=E1n_C=2E_Farley?= <sean-freebsd at>
To: bug-followup at, sean-freebsd at
Subject: Re: gnu/77818: GDB locks in wait4() when running applications
Date: Fri, 13 May 2005 00:47:41 -0500 (CDT)

   This message is in MIME format.  The first part should be readable text,
   while the remaining parts are likely unreadable without MIME-aware tools.
 Content-Type: TEXT/PLAIN; charset=ISO-8859-1; format=flowed
 Content-Transfer-Encoding: QUOTED-PRINTABLE
 I think I may have found the issue or at least an issue.  It has to do
 with signal suspensions not being copied from the initial process down
 to a grandchild.  This causes the parent to miss the SIGCHLD when the
 process exits too quickly.  I have an example program[1] to illustrate
 the problem.  This program does work as expected on FreeBSD-4.10 and
 sean-freebsd at

More information about the freebsd-bugs mailing list