UB runtime error: load of value .. not a valid value at IccProfLib/IccMpeCalc.cpp:3633

[xsscx]

Maintainer Repro

Sun Jan 18 20:38:57 EST 2026

Host

Linux 6.6.87.2-microsoft-standard-WSL2 #1 SMP PREEMPT_DYNAMIC Thu Jun  5 18:30:46 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux

Source Tested

7f0ebcf
7f0ebcf (HEAD -> master, origin/master, origin/HEAD) Modify: ci-pr-action & child workflows (#471)

Step 1. wget https://github.com/xsscx/Commodity-Injection-Signatures/raw/refs/heads/master/graphics/icc/ub-load-of-value-not-valid-icSigCalcOp.icc

Step 2. iccRoundTrip ub-load-of-value-not-valid-icSigCalcOp.icc

Expected Output

[2026-01-19 01:38:57 UTC] ~/head/iccDEV/Testing (master)$ iccRoundTrip ub-load-of-value-not-valid-icSigCalcOp.icc
/home/h02332/head/iccDEV/IccProfLib/IccMpeCalc.cpp:3928:17: runtime error: load of value 2509398899, which is not a valid value for type 'icSigCalcOp'
/home/h02332/head/iccDEV/IccProfLib/IccMpeCalc.cpp:3928:54: runtime error: load of value 2509398899, which is not a valid value for type 'icSigCalcOp'
/home/h02332/head/iccDEV/IccProfLib/IccMpeCalc.cpp:3928:91: runtime error: load of value 2509398899, which is not a valid value for type 'icSigCalcOp'
/home/h02332/head/iccDEV/IccProfLib/IccMpeCalc.cpp:3967:17: runtime error: load of value 2509398899, which is not a valid value for type 'icSigCalcOp'
/home/h02332/head/iccDEV/IccProfLib/IccMpeCalc.cpp:3633:17: runtime error: load of value 2509398899, which is not a valid value for type 'icSigCalcOp'
Unable to perform round trip on 'ub-load-of-value-not-valid-icSigCalcOp.icc'