fix: null reference check

baywet · baywet · commit ec77d75355a4 · 2025-01-31T14:31:01.000-05:00
Signed-off-by: Vincent Biret &lt;vibiret@microsoft.com&gt;
diff --git a/src/Microsoft.OpenApi/Models/OpenApiSchema.cs b/src/Microsoft.OpenApi/Models/OpenApiSchema.cs
@@ -634,6 +634,7 @@ private void SerializeTypeProperty(JsonSchemaType? type, IOpenApiWriter writer,
         {
             // check whether nullable is true for upcasting purposes
             var isNullable = Nullable || 
+                                Extensions is not null &&
                                 Extensions.TryGetValue(OpenApiConstants.NullableExtension, out var nullExtRawValue) && 
                                 nullExtRawValue is OpenApiAny openApiAny &&
                                 openApiAny.Node is JsonNode jsonNode &&

Original file line number	Diff line number	Diff line change
`@@ -634,6 +634,7 @@ private void SerializeTypeProperty(JsonSchemaType? type, IOpenApiWriter writer,`
`634`	`634`	`{`
`635`	`635`	`// check whether nullable is true for upcasting purposes`
`636`	`636`	`var isNullable = Nullable \|\|`
	`637`	`+ Extensions is not null &&`
`637`	`638`	`Extensions.TryGetValue(OpenApiConstants.NullableExtension, out var nullExtRawValue) &&`
`638`	`639`	`nullExtRawValue is OpenApiAny openApiAny &&`
`639`	`640`	`openApiAny.Node is JsonNode jsonNode &&`