Steven Wu ca87615b4a [CAS] Allow empty filename for diagnostics location ...

Fix a bug that an empty filename for diagnostics can trigger an error
in the cached diagnostics. The empty filename can be a virtual file
synthesized, for example, to hold an implicit attribute from clang
importer.

The cached diagnostics can correctly handle such filename now and
cached/replay those diagnostics.

rdar://141961161

2025-01-02 13:18:43 -08:00

32 KiB

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