[bug #15770] segfault in guile 1.7.91

* [bug #15770] segfault in guile 1.7.91
@ 2006-02-16 15:54 anonymous
  2006-02-21 21:50 ` Kevin Ryde
  0 siblings, 1 reply; 2+ messages in thread
From: anonymous @ 2006-02-16 15:54 UTC (permalink / raw)

URL:
  <http://savannah.gnu.org/bugs/?func=detailitem&item_id=15770>

                 Summary: segfault in guile 1.7.91
                 Project: Guile
            Submitted by: None
            Submitted on: Чтв 16.02.2006 at 15:54
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open

    _______________________________________________________

Details:

It is unable to call callback from thread in guile extension.

module:
--
#include <libguile.h>
#include <pthread.h>

pthread_t dbus_tid;

void *start_test(void* user_data)
{
        scm_call_0((void*)(user_data));
}

SCM scm_test_thread(SCM arg)
{
        pthread_create(&dbus_tid,NULL,start_test,arg);
}

void scm_init_test(void)
{
        scm_c_define_gsubr("test-thread", 1, 0,
0,(SCM(*)())scm_test_thread);
}
--

testcase:
--
(dynamic-call "scm_init_test" (dynamic-link "libguile-thread.so"))

(define cb (lambda() (write "zzz!\n")))

(test-thread cb)

(pause)

how to reproduce:

$gcc -fpic -lpthread dbus.c -shared -o lguile-thread.so

---
guile
guile> (dynamic-call "scm_init_test" (dynamic-link "libguile-thread.so"))
guile> (define cb (lambda() (write "zzz!\n")))
guile> (test-thread cb)
Segmentation fault

    _______________________________________________________

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