From 550d2f9048ce2a9d572da14a36043cf3f5b87bdd Mon Sep 17 00:00:00 2001
From: schoetbi <schoetbi@users.noreply.github.com>
Date: Thu, 2 Sep 2021 23:24:47 +0200
Subject: [PATCH] Issue error if jsonschema has no root type defined #6821
 (#6831)

---
 src/idl_gen_json_schema.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/idl_gen_json_schema.cpp b/src/idl_gen_json_schema.cpp
index 2e1cef65a..b607d28c2 100644
--- a/src/idl_gen_json_schema.cpp
+++ b/src/idl_gen_json_schema.cpp
@@ -198,7 +198,10 @@ class JsonSchemaGenerator : public BaseGenerator {
 
   bool generate() {
     code_ = "";
-    if (parser_.root_struct_def_ == nullptr) { return false; }
+    if (parser_.root_struct_def_ == nullptr) { 
+      std::cerr << "Error: Binary schema not generated, no root struct found\n";
+      return false; 
+    }
     code_ += "{" + NewLine();
     code_ += Indent(1) +
              "\"$schema\": \"https://json-schema.org/draft/2019-09/schema\"," +