Dear Étienne, For future reference, I managed to identify the root cause of the issue by changing the structure of "run-dicom-image-transcode-test" so as to get the full log of Orthanc [1], which explains the intermediate release "orthanc-wsi_3.2+dfsg-6" yesterday. Then, inspecting the detailed logs, I observed the following error line for all the arm64, riscv64, ppc64el and s390x architectures [2]:
1549s E0427 22:47:24.020832 MAIN wsi:/Plugin.cpp:492] Exception in startup tests: Internal error Tracking this line in the upstream source code [3], it appears that the issue was related to a different behavior in floating-point arithmetic on these specific platforms. I thus created a patch to relax the error as a warning [4], which led to "orthanc-wsi_3.2+dfsg-7". This patch makes autopkgtest succeed (note however that riscv64 is still pending at the time of writing). Inspecting the new logs in the Debian continuous integration [5], I then got: [arm64] 103s W0428 06:26:25.965016 MAIN wsi:/Plugin.cpp:489] LABColor test: (0,7.56979e-06,127) vs. (0,0,127) [ppc64el] 130s W0428 03:57:26.923464 MAIN wsi:/Plugin.cpp:489] LABColor test: (0,7.56979e-06,127) vs. (0,0,127) [s390x] 85s W0428 04:07:34.147764 MAIN wsi:/Plugin.cpp:489] LABColor test: (0,7.56979e-06,127) vs. (0,0,127) As can be seen, the floating-point error on the "A" component (7.56979e-06 vs. expected 0) is negligible, so the error was a false alarm, and I consider that the patch solves this issue. The upstream code has been relaxed accordingly, so the patch will not be necessary in future releases [6]. I hope that this investigation at last unblocks the dcmtk migration to 3.6.9-5 in testing. Kind Regards, Sébastien- [1] https://salsa.debian.org/med-team/orthanc-wsi/-/commit/8ef626741c542a463dd15f0e82797a66a3f5e912 [2] https://ci.debian.net/packages/o/orthanc-wsi/testing/riscv64/60287848/ [3] https://orthanc.uclouvain.be/hg/orthanc-wsi/file/OrthancWSI-3.2/ViewerPlugin/Plugin.cpp#l473 [4] https://salsa.debian.org/med-team/orthanc-wsi/-/commit/56c5003abaa66c26b996f6ac28a682be0a05a0d2 [5] https://ci.debian.net/packages/o/orthanc-wsi/unstable/arm64/60294240/ [6] https://orthanc.uclouvain.be/hg/orthanc-wsi/rev/0045d4f23eba On Thu, 24 Apr 2025 at 22:51, Étienne Mollier <emoll...@debian.org> wrote: > We're almost there with getting dcmtk and the Orthanc ecosystem > to migrate to trixie. The remaining issues only affect > orthanc-wsi, and on a particular set of CPU architectures > (arm64, riscv64, ppc64el and s390x).
