Enable compiler sanitizers for test builds, fixed new bugs found with them

[shan-tanu-joshi-3010]

No description provided.

[shan-tanu-joshi-3010]

tried to add the feature sanitizer in cli issue #1137

[shan-tanu-joshi-3010]

the feature has two sanitizers AddressSanitizer (ASan) and UndefinedBehaviorSanitizer (UBSan) and works only for ci not for production

[shan-tanu-joshi-3010]

fixes the error

[gittiver]

There are changes in query_string and tests which are not directly related to sanitizers.
Why are they there - warnings by sanitizers and can we have these fixes separately?

[shan-tanu-joshi-3010]

There are changes in query_string and tests which are not directly related to sanitizers. Why are they there - warnings by sanitizers and can we have these fixes separately?

These changes are directly caused by the sanitizer build configuration. The ci-sanitize preset inherits from ci-linux, which uses the flags-gcc-clang compiler flags — including -Wold-style-cast, -Wconversion, and -Wsign-conversion with -Werror. The
query_string.h changes replace C-style casts with static_cast and add bounds-checking to prevent heap-buffer-overflow (the original issue this PR addresses). The test changes fix corresponding warnings so the sanitizer build compiles cleanly.
These aren't cosmetic cleanups — they're required for the sanitizer build to pass. I can split them into a separate PR if you prefer, but note that the sanitizer CI job will fail without them.

[shan-tanu-joshi-3010]

If you want I can solve this in a seperate pr but I am new to git hub so I am still figuring out how things work here