Fix: Code Coverage Report

[xsscx]

Maintainer Summary

2026-02-18 03:25:16 UTC

Reference: #589

In https://github.com/InternationalColorConsortium/iccDEV/actions/workflows/ci-code-coverage.yml

• warning: 1641 functions have mismatched data

[xsscx]

Fix Status

• Work in Progress

2026-02-25 00:44:21 UTC

Bare Metal: W5-2465X
OS: WSL-2 Ubuntu 24

Coverage

Line Coverage 45%
Branch Coverage 43%
Function Coverage 50%

Patch Testing

• Testing 30 patches

Code Coverage Report

Patches Applied: 001–030

Summary

Metric	Value
Region Coverage	48.98%
Function Coverage	50.44%
Line Coverage	45.52%
Branch Coverage	43.17%
Total Lines	46,530
Lines Covered	21,179
Total Branches	23,444
Branches Covered	10,121

Per-File Coverage (IccProfLib — sorted by line coverage)

File	Lines	Line Cover	Branches	Branch Cover	Functions	Func Cover
IccMD5.cpp	125	99.20%	12	91.67%	—	100.00%
IccTagFactory.cpp	231	90.04%	162	93.21%	—	85.71%
IccPrmg.cpp	140	87.14%	66	78.79%	—	100.00%
IccEval.cpp	95	86.32%	48	81.25%	—	100.00%
IccMpeCalc.cpp	3480	85.11%	2254	80.30%	—	90.97%
IccCAM.cpp	353	73.37%	64	32.81%	—	89.66%
IccStructFactory.cpp	101	66.34%	44	68.18%	—	80.00%
IccProfile.cpp	2388	66.12%	1682	61.41%	—	65.00%
IccTagMPE.cpp	964	65.77%	456	59.43%	—	82.98%
IccUtil.cpp	1817	64.72%	1034	62.57%	—	72.48%
IccSolve.cpp	34	64.71%	10	50.00%	—	62.50%
IccMpeFactory.cpp	146	62.33%	86	75.58%	—	75.00%
IccTagLut.cpp	3349	57.66%	1628	57.80%	—	74.62%
IccArrayFactory.cpp	91	54.95%	34	52.94%	—	60.00%
IccXformFactory.cpp	66	54.55%	30	60.00%	—	66.67%
IccIO.cpp	554	53.79%	250	43.60%	—	62.50%
IccEncoding.cpp	410	51.95%	142	41.55%	—	80.00%
IccTagBasic.cpp	5932	50.17%	2834	39.59%	—	62.93%
IccTagDict.cpp	732	49.59%	288	45.83%	—	43.48%
IccTagComposite.cpp	809	47.47%	372	37.37%	—	66.67%
IccMpeBasic.cpp	3669	45.68%	1870	40.96%	—	65.27%
IccStructBasic.cpp	268	32.84%	102	19.61%	—	43.33%
IccCmm.cpp	6378	27.67%	3568	21.80%	—	37.78%
IccTagProfSeqId.cpp	235	27.23%	80	20.00%	—	28.57%
IccArrayBasic.cpp	373	23.59%	150	15.33%	—	30.43%
IccMpeSpectral.cpp	1214	22.16%	612	17.16%	—	35.71%
IccMatrixMath.cpp	174	20.69%	76	19.74%	—	38.46%
IccConvertUTF.cpp	605	16.53%	428	18.69%	—	26.67%
IccSparseMatrix.cpp	429	12.82%	210	6.67%	—	31.25%
IccPcc.cpp	236	12.71%	94	9.57%	—	5.56%
IccTagEmbedIcc.cpp	252	0.00%	102	0.00%	—	0.00%
IccMpeACS.cpp	157	0.00%	74	0.00%	—	0.00%
IccEnvVar.cpp	43	0.00%	6	0.00%	—	0.00%
IccApplyBPC.cpp	339	0.00%	176	0.00%	—	0.00%

Per-File Coverage (IccXML)

File	Lines	Line Cover	Branches	Branch Cover
IccIoXml.cpp	17	0.00%	4	0.00%
IccMpeXml.cpp	2793	28.64%	1196	33.53%
IccMpeXmlFactory.cpp	43	6.98%	36	0.00%
IccProfileXml.cpp	673	55.72%	396	61.62%
IccTagXml.cpp	4048	26.06%	1742	28.24%
IccTagXmlFactory.cpp	117	54.70%	104	73.08%
IccUtilXml.cpp	1067	36.27%	626	37.06%

Top Covered Files (>70% line coverage)

File	Line Coverage	Key Paths Exercised
IccMD5.cpp	99.20%	Hash computation (profile ID)
IccTagFactory.cpp	90.04%	Tag creation/dispatch
IccPrmg.cpp	87.14%	Profile Reference Medium Gamut
IccEval.cpp	86.32%	Profile evaluation
IccMpeCalc.cpp	85.11%	Calculator element (primary surface)
IccSignatureUtils.h	80.00%	Signature string conversion

Coverage Gaps — Priority Targets

File	Line Cover	Gap Analysis
IccApplyBPC.cpp	0.00%	Black Point Compensation — needs BPC-enabled profiles
IccMpeACS.cpp	0.00%	Abstract Color Space elements — rare in real profiles
IccTagEmbedIcc.cpp	0.00%	Embedded ICC profiles — needs nested profile inputs
IccEnvVar.cpp	0.00%	Environment variables — needs env-var-aware profiles
IccPcc.cpp	12.71%	Profile Connection Conditions — needs PCC-specific profiles
IccConvertUTF.cpp	16.53%	UTF conversion — partially reached via XML paths
IccSparseMatrix.cpp	12.82%	Sparse matrix ops — needs sparse matrix element profiles

Notes

• Coverage generated from all 18 fuzzer corpora evolved during active fuzzing sessions
• Exit code 1 on some fuzzers is due to pre-existing memory leaks (LeakSanitizer), not crashes
• XML library coverage improved significantly (0% → 28-55%) with fromxml/toxml corpus inputs
• IccMpeCalc.cpp (calculator element) reached 85% — this is the primary surface where most crashes have been found
• IccTagBasic.cpp jumped from 22% to 50% — patches 027/028 fixed bugs in previously-uncovered paths