[pigeon] Fix handling of null class args in C++ #6881
Merged
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The code generated for Windows (C++) crashes when
null
is passed for a nullable, class-type parameter to a Pigeon method. This fixes that generation, and adds an integration test covering this case since it was missing from the list of types where we echo anull
in integration tests to catch this kind of issue.Fixes flutter/flutter#149174
Pre-launch Checklist
dart format
.)[shared_preferences]
pubspec.yaml
with an appropriate new version according to the pub versioning philosophy, or this PR is exempt from version changes.CHANGELOG.md
to add a description of the change, following repository CHANGELOG style, or this PR is exempt from CHANGELOG changes.///
).