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Date:      Fri, 12 Feb 2021 20:11:21 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 253318] lldb: aborted when debugging named
Message-ID:  <bug-253318-227-bSpXCk65wC@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-253318-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-253318-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253318

--- Comment #8 from Xin LI <delphij@FreeBSD.org> ---
I was able to reliably reproduce the issue with the following test program:

<--<--<--<--<--<--<--<--<--<--<--<--<--<--

#include <sys/cdefs.h>

#include <string.h>
#include <pthread.h>
#include <unistd.h>

#define WORKERS 9

void *
worker(void *p)
{
        for (;;)
                sleep(10);
}

int
main(int argc, char **argv)
{
        int i;
        pthread_t thr[WORKERS];

        memset(&thr, 0, sizeof(thr));

        for (i=3D0; i<WORKERS; i++) {
                pthread_create(&thr[i], NULL, worker, NULL);
        }

        for (i=3D0; i<WORKERS; i++) {
                pthread_join(thr[i], NULL);
        }

        /* NOTREACHED */
        return (0);
}

-->-->-->-->-->-->-->-->-->-->-->-->-->-->

Run the test program, then lldb attach to it, and type "thread<tab>" would
crash lldb with the same crash.

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