[Bug libstdc++/42624] libstdc++ parallel mode deadlocks in barrier

["edwintorok at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #15 from edwintorok at gmail dot com  2010-01-13 20:39 -------
(In reply to comment #14)
> (In reply to comment #13)
> 
> > This code is compiled with -fno-exceptions, could that be a problem?
> 
> No, that should rather help.
> 
> Still, it is very difficult to debug this.  Is there at least a way to access
> clamd's stdout and/or stderr?
> 

The usual way to debug clamd is by setting 'Foreground yes' in clamd.conf,
however the bug doesn't reproduce then.

You can however still get stderr/stdout by applying the patch below, and
starting clamd like this:
$ clamd/clamd -c etc/clamd.conf >stdout.log 2>stderr.log
or even without redirection:
$ clamd/clamd -c etc/clamd.conf

diff --git a/shared/misc.c b/shared/misc.c
index 080d4ec..656dda5 100644
--- a/shared/misc.c
+++ b/shared/misc.c
@@ -247,7 +247,7 @@ int daemonize(void)
        int fds[3], i;
        pid_t pid;

-
+#if 0
     fds[0] = open("/dev/null", O_RDONLY);
     fds[1] = open("/dev/null", O_WRONLY);
     fds[2] = open("/dev/null", O_WRONLY);
@@ -272,7 +272,7 @@ int daemonize(void)
     for(i = 0; i <= 2; i++)
        if(fds[i] > 2)
            close(fds[i]);
-
+#endif
     pid = fork();

     if(pid == -1)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42624