---

#ifdef MY_CODE
/* Export linker symbols into C context */
extern uint32_t __ocram_bss_start;
extern uint32_t __ocram_bss_end;

void zero_init_ocram_bss(void)
{
    uint32_t *src = &__ocram_bss_start;
    uint32_t *dst = &__ocram_bss_end;

    /* 
     * Manually zero out the custom OCRAM BSS section 
     * to guarantee that posix_mutex_pool and posix_thread_pool 
     * contain clean zeros before any OS structures use them.
     */
    while (src < dst) {
        *src++ = 0;
    }
}
#endif

int main(void)
{
#ifdef MY_CODE
    /* Clear custom internal memory structures strictly before PJSIP starts */
    zero_init_ocram_bss();
#endif

    // Your standard pjsua_init() and start logic...
}