src/parser_lyb.c: fix for - large stack use

Author: jsc-se

src/parser_lyb.c

@@ -1675,13 +1675,20 @@ lyd_lyb_data_length(const char *data)
     LY_ERR ret = LY_SUCCESS;
     struct lylyb_ctx *lybctx;
     uint32_t count;
+    uint8_t *buf;
     uint8_t zero[LYB_SIZE_BYTES] = {0};
 
     if (!data) {
         return -1;
     }
 
+    buf = calloc(1, LYB_SIZE_MAX);
+    LY_CHECK_ERR_RET(!buf, LOGMEM(NULL), LY_EMEM);
+
     lybctx = calloc(1, sizeof *lybctx);
+    if (!lybctx) {
+        free(buf);
+    }
     LY_CHECK_ERR_RET(!lybctx, LOGMEM(NULL), LY_EMEM);
     ret = ly_in_new_memory(data, &lybctx->in);
     LY_CHECK_GOTO(ret, cleanup);
@@ -1717,6 +1724,7 @@ lyd_lyb_data_length(const char *data)
 
     ly_in_free(lybctx->in, 0);
     lylyb_ctx_free(lybctx);
+    free(buf);
 
     return ret ? -1 : (int)count;
 }