Function wd_stack_max

internal/cbm/extract_defs.c:6645–6654

Generous safety ceiling (frames), env-overridable via CBM_WALK_DEFS_MAX. Realistic files never approach this; it only bounds a pathological/adversarial file so extraction degrades to a warned skip rather than unbounded memory.

// Realistic files never approach this; it only bounds a pathological/adversarial
// file so extraction degrades to a warned skip rather than unbounded memory.
static int wd_stack_max(void) {
    const char *e = getenv("CBM_WALK_DEFS_MAX");
    if (e) {
        int v = atoi(e);
        if (v > 0) {
            return v;
        }
    }
    return 8 * 1024 * 1024; // 8M frames (~320 MB) default
}

static void wd_push(wd_stack_t *s, TSNode node, const char *enclosing_qn) {
    if (s->top >= s->cap) {