Re: kern/44432: cannot single-step over a call to sigprocmask()

[Antti Kantee <pooka%iki.fi@localhost>]

The following reply was made to PR kern/44432; it has been noted by GNATS.

From: Antti Kantee <pooka%iki.fi@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/44432: cannot single-step over a call to sigprocmask()
Date: Mon, 24 Jan 2011 18:53:31 +0200

 On Mon Jan 24 2011 at 16:45:02 +0000, Nick Hudson wrote:
 >  On Friday 21 January 2011 17:00:01 pooka%iki.fi@localhost wrote:
 >  [...]
 >  > #include <signal.h>
 >  > #include <stdio.h>
 >  > 
 >  > int
 >  > main()
 >  > {
 >  >         sigset_t set;
 >  > 
 >  >         sigfillset(&set);
 >  >         sigprocmask(SIG_SETMASK, &set, NULL);
 >  >         printf("hello, world!\n");
 >  > 
 >  > }
 >  
 >  If it wasn't obvious... deleting SIGTRAP from the sigset_t allows gdb to 
 >  step/next over the sigprocmask call.
 
 So does commenting out the call to sigprocmask, and it's less typing ;)
 
 I'm secretly hoping this is related to multithreaded programs randomly
 hanging under gdb since the symptoms are exactly the same: debugged
 program starts consuming 100% cpu.
 
 -- 
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