bugfix; build dummy root node for error marker nodes, to ensure that they have an accurate way to tell their location

source/md_impl.c

@@ -1234,9 +1234,11 @@ MD_PushNodeErrorF(MD_ParseCtx *ctx, MD_Node *node, MD_MessageKind kind, char *fm
 
 MD_FUNCTION void
 MD_PushTokenError(MD_ParseCtx *ctx, MD_Token token, MD_MessageKind kind, MD_String8 str){
+    MD_Node *stub_file = MD_MakeNode(MD_NodeKind_ErrorMarker, ctx->file_contents, ctx->file_contents, ctx->file_contents.str);
     MD_Node *stub = _MD_MakeNode_Ctx(ctx, MD_NodeKind_ErrorMarker,
                                      token.string, token.outer_string, token.outer_string.str);
     MD_PushNodeError(ctx, stub, kind, str);
+    MD_PushChild(stub_file, stub);
 }
 
 MD_FUNCTION void

tests/sanity_tests.c

@@ -31,6 +31,13 @@ TestResult(MD_b32 result)
     test_ctx.number_of_tests += 1;
     test_ctx.number_passed += !!result;
     printf(result ? "." : "X");
+    
+#if 0
+    if(result == 0)
+    {
+        __debugbreak();
+    }
+#endif
 }
 
 static void