ub in jsonFromEnvMap() at IccCmmConfig.cpp:933

[xsscx]

XNU Task

2026-06-17 01:35:37 UTC

TODO @xsscx

Fixup for ordered/unordered map to Silence the runtime errors seen below.

XNU Host

Darwin Kernel Version 25.5.0: Mon Apr 27 20:38:00 PDT 2026; root:xnu-12377.121.6~2/RELEASE_ARM64_T8103 arm64

XNU Log

iccApplyProfiles -exportcfg foo.bar Data/smCows380_5_780.tif foo.tif 2 1 0 1 1 -embedded 3 ICC/MultSpectralRGB.icc 65535
...
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:141:40: runtime error: left shift of 7308332046385373561 by 52 places cannot be represented in type 'unsigned long'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:141:40
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:169:41: runtime error: left shift of 1180918633 by 3 places cannot be represented in type 'uint32_t' (aka 'unsigned int')
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:169:41
IccLibConnect/IccCmmConfig.cpp:933:39: runtime error: load of value 53, which is not a valid value for type 'icXformLutType'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior IccLibConnect/IccCmmConfig.cpp:933:39
...
zsh: abort      iccApplyProfiles -exportcfg foo.bar Data/smCows380_5_780.tif foo.tif 2 1 0 1

Pix

Originally posted by @xsscx in #1375

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