Try hammering in "fork" instead of "vfork".
Look also at the signal code in Tcl itself - it may be resetting
some signals
>>>Mo DeJong said:
> I just ran your example and got a core dump with Tcl Blend 1.2.5
> and JDK-1.2.1_03 on a Solaris 5.6 box. This is a mighty strange
> one. Why would the parent process lose the signal handler in a fork().
>
> Mo Dejong
> Red Hat Inc.
>
> On Mon, 20 Mar 2000, Jiang Wu wrote:
>
> > Can someone verify that the following scenario will cause a core dump on
> > Solaris 2.7?
> >
> > Setup: Solaris 2.7, Tcl 8.2.3, TclBlend 1.2.6, JDK 1.2.2
> > Steps: Start 'jtclsh' and type the following commands
> >
> > package require java
> > catch {set x [exec whoami]}
> > java::load -classpath foo bar
> >
> > ------------------------------------------------
> >
> > In JDK 1.2.2, the JVM uses a signal handler to catch SIGSEGV. "package
> > require java" sets up this signal handler in the process. However, after
> > "exec whoami", the parent process loses the signal handler. I put debug
> > printf in the code "TclpCreateProcess(...)" in "tclUnixPipe.c" file. It
> > seems that after the "vfork()" call, only the child process is retaining t
he
> > signal handler. The parent process no longer has the signal handler.
> >
> > // signal handler OK
> > pid = vfork();
> >
> > // signal handler OK in child process
> > // signal handler reverted to SIG_DFL in the parent process
> >
> > Losing the signal handler causes the process to core dump later on when
> > accessing certain Java code.
> >
> > -- Jiang Wu
> > [EMAIL PROTECTED]
>
>
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