Created attachment 185217 [details] TIFF image in CIE Lab format with embedded ICC profile set to D65 SUMMARY STEPS TO REPRODUCE 1. Open Krita 2. Load the TIFF image in CIE Lab format with embedded ICC profile or 1. Open Krita 2. Open any image and try to associate ICC profile which is in the attachment OBSERVED RESULT Crash EXPECTED RESULT Correct loading of the profile and interpretation of the image as CIE Lab D65 with absolute colorimetric intent SOFTWARE/OS VERSIONS Windows: macOS: (available in the Info Center app, or by running `kinfo` in a terminal window) Operating System: openSUSE Leap 15.6 KDE Plasma Version: 5.27.11 KDE Frameworks Version: 5.115.0 Qt Version: 5.15.12 Kernel Version: 6.4.0-150600.23.70-default (64-bit) Graphics Platform: offscreen Processors: 20 × 13th Gen Intel® Core™ i9-13900H Memory: 31.1 GiB of RAM Graphics Processor: Mesa Intel® Graphics ADDITIONAL INFORMATION
Created attachment 185218 [details] ICC profile for CIE Lab D65 absolute colorimetric intent Try to load this profile and Krita will crash on loading it.
Profile itself is correct, as reported by "iccdump LabD65abs.icc" icc: Header: size = 524 bytes CMM = 'lcms' Version = 2.4.0 Device Class = Abstract Color Space = Lab Conn. Space = Lab Date, Time = 23 Sep 2025, 16:57:52 Platform = Unrecognized - 'LIN ' Flags = Not Embedded Profile, Use anywhere Dev. Mnfctr. = 0x0 Dev. Model = 0x0 Dev. Attrbts = Reflective, Glossy, Positive, Color Rndrng Intnt = Absolute Colorimetric Illuminant = 0.96420288, 1.00000000, 0.82490540 [Lab 100.000000, 0.000000, 0.000000] Creator = 'lcms' tag 0: sig 'desc' type 0x3d offset 192 size 320 tag 1: sig 'cprt' type 0x6500 offset 348 size 33 tag 2: sig 'wtpt' type 0x7300 offset 384 size 20 tag 3: sig 'chad' type 0x6500 offset 404 size 44
Looks like LCMS has a problem here: krita.lib.pigment: Lcms2 error: 13 Couldn't link the profiles krita.lib.pigment: Lcms2 error: 13 Couldn't link the profiles SAFE ASSERT (krita): "d->defaultTransformations->toRGB" in file /builds/graphics/krita/plugins/color/lcms2engine/LcmsColorSpace.h, line 230 krita.lib.pigment: Lcms2 error: 13 Couldn't link the profiles SAFE ASSERT (krita): "d->defaultTransformations->toRGB16" in file /builds/graphics/krita/plugins/color/lcms2engine/LcmsColorSpace.h, line 238 krita.lib.pigment: Lcms2 error: 13 Couldn't link the profiles Segmentation fault (core dumped) I can confirm the crash, but... Given that the segfault is inside LCMS, we'll need to figure out whether it's a bug in the library or in Krita.