cmsCreateTransform returns nullptr in 2.16, but works in 2.15- about little-cms HOT 6 CLOSED

I've checked your code with USWebCoatedSWOP.icc and it works fine to me. Which is the printer_profile.icm you are using?

BTW, black point compensation does nothing in absolute colorimetric, but this should not make create transform to fail.

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I think it doesn`t matter what printer profile used. Problem appears when I set any flag. Did you check on 2.16 release version or current version?
DTF P900 ROLL.dmp
(rename to icm)

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Using this code with official lcms2-2.16, Visual studio 2022, works fine to me

#include "lcms2.h"

int main()
{
auto inp{ cmsCreate_sRGBProfile() };
auto outp{ cmsOpenProfileFromFile("DTF.P900.ROLL.dmp", "r") };
auto transform{ cmsCreateTransform(inp, TYPE_RGBA_8_PLANAR, outp, TYPE_CMYK_8_PLANAR, INTENT_ABSOLUTE_COLORIMETRIC, cmsFLAGS_BLACKPOINTCOMPENSATION) };
return 0;
}

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OK, I will build lcms2 debug version and check again.

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It`s a magic... I built debug version, and all works. Then rebuilt release version. And it works too.
Thanks for your time )

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