[Alb3e3]

Fixes #1712.

Add secure-memory ON/OFF builds to the existing CMake matrix across Ubuntu,
Windows, macOS and C++11/17/20. Use Debug consistently across generators and run
CTest after building, including the reader/writer suites as well as unit tests.

Verified locally with GCC 15.2: all three CTest suites pass in each of the six
secure-memory/C++ configurations. The pre-#1709 secure build fails on string
allocator mismatches. Restoring only the old CZString cleanup call on current
master also makes the secure CTest run fail at ValueTest/CZStringCoverage.
Actionlint passes. Windows and macOS still need the GitHub runners.

Prepared with AI assistance; the validation commands above were run locally.

[greptile-apps]

Confidence Score: 5/5

[Low impact] The PR appears safe to merge; no blocking issue was found.

Summary

Adds secure-memory ON/OFF coverage to the CMake matrix.

• CMake CI builds both secure-memory modes and runs tests in Debug.

_{Reviews (2) · Last reviewed commit: "Merge branch 'master' into ci/test-secur..." · Reviewed by Greptile}

[coveralls]

Coverage Report for CI Build 40347649821

Coverage remained the same at 89.926%

Details

• Coverage remained the same as the base build.
• Patch coverage: No coverable lines changed in this PR.
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	2740
Covered Lines:	2615
Line Coverage:	95.44%
Relevant Branches:	2640
Covered Branches:	2223
Branch Coverage:	84.2%
Branches in Coverage %:	Yes
Coverage Strength:	23835.16 hits per line

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💛 - Coveralls