Hi!
I encounter a crash in pjsua_acc.c: pjsua_acc_create_uac_contact()
function during:
contact->slen = pj_ansi_snprintf(contact->ptr, PJSIP_MAX_URL_SIZE,
"%.*s%s<%s:%.*s%s%s%.*s%s:%d%s%.*s>%.*s",
(int)acc->display.slen,
acc->display.ptr,
(acc->display.slen?" " : ""),
......
When the account is configured without a user name (display name), then
acc->display.slen will be 0 and acc->display.ptr will be uninitialized.
When I build pjproject/QjSimple with an old mingw release (gcc3.4.5)
then everything is fine, but if I build pjproject/QjSimple with mingw
included in QtSDK2009.05 (gcc4.4.0) I get a segfault in
c:\windows\system32\msvcrt.dll:strlen when creating the contact header.
Questions:
Is it allowed to call snprintf with an uninitialized pointer?
Why does crash behavior depend on the used compiler? Isn't snprintf a
Windows function?
When using gcc4.4.0 - why is strlen called although %.*s is specified?
Anyway, solution would be to:
PJ_DEF(void) pjsip_name_addr_init(pjsip_name_addr *name)
{
name->vptr = &name_addr_vptr;
name->uri = NULL;
name->display.slen = 0;
name->display.ptr = NULL;
}
regards
Klaus
