TODO: PR #1880 - Add CTest UseLegacyPCS()

[xsscx]

Post Merge Report

2026-08-15 11:41:22 UTC

References

#1748

Item 2

So no CTest can exercise UseLegacyPCS() at all — the whole v2 Lab-encoding path is
untested. A real-world CMYK press profile is almost always v2, which is why @xian20020 hits
this on Windows and CI never has. The Testing/ corpus contains no ICC v2 profile at all, so UseLegacyPCS() — the whole
v2 Lab-encoding path — is exercised by nothing in CI. Across all 252 Testing/**/*.icc:
233 v5 + 19 v4, zero v2; tag types 0 mft2, 0 mft1, 21 mAB , 32 mBA , 1 ncl2. That is why the reporter's exact failure could not be reproduced here (details below), and
it is a standing coverage gap larger than this PR. Not filed as a separate issue — flagging
it here for maintainer visibility.

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