ted-ross commented on a change in pull request #817:
URL: https://github.com/apache/qpid-dispatch/pull/817#discussion_r467223166
##########
File path: src/router_core/modules/mobile_sync/mobile.c
##########
@@ -206,6 +206,15 @@ static void
qcm_mobile_sync_compose_diff_hint_list(qdrm_mobile_sync_t *msync, qd
static qd_message_t
*qcm_mobile_sync_compose_differential_mau(qdrm_mobile_sync_t *msync, const char
*address)
{
+ //
+ // DISPATCH-1738: If the router is shutting down, the qd_dispatch_free()
in dispatch.c frees the qd->router_id and
+ // sets the core->router_id to zero. When the core is shutting down, the
core->router_id will be zero
+ // and we don't want to proceed with this function. We return here in
order to prevent the use after free error on
+ // msync->core->router_id down below in the function.
+ //
+ if (! msync->core->router_id)
+ return 0;
+
Review comment:
Why? That's what I'm trying to get rid of.
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