+ if (!state || state == &err_no_mem) {
+ void *tmp = malloc(sizeof *state + 100);
+
+ if (!tmp) {
+ state = &err_no_mem;
+ return;
+ }
+
+ gl_tls_set(tls_key, (state = tmp));
+ state->nstr = 100;
+ }
+
+ if (code == CDECL_ENOMEM) {
+ if (state != &err_no_mem)
+ state->err = err_no_mem.err;
+ return;
+ }
+retry:
+ va_start(ap, code);
+ fmt = va_arg(ap, const char *);
+ rc = vsnprintf(state->str, state->nstr, fmt, ap);
+ va_end(ap);
+
+ if (rc > 0 && rc >= state->nstr) {
+ void *tmp;
+ size_t n;
+
+ assert(try == 0 && rc < SIZE_MAX / 4);
+
+ n = ((size_t)rc + 1) * 2;
+ tmp = realloc(state, sizeof *state + n);
+ if (tmp) {
+ state = tmp;
+ state->nstr = n;
+ try++;
+
+ goto retry;
+ }
+
+ state->err = err_no_mem.err;
+ return;
+ }