NagyDonat fe3b20d5ab [analyzer] Use CDM::CLibrary instead of isGlobalCFunction() (#88267) ...

This commit updates several checkers to use call descriptions with the
matching mode `CDM::CLibrary` instead of checking
`Call.isGlobalCFunction()` after performing the match. This resolves
several TODOs in various checkers.

Note that both matching with `CDM::CLibrary` and calling
`isGlobalCFunction` leads to `CheckerContext::isCLibraryFunction()`
checks (so this change is close to being NFC), but if it is used via the
matching mode then the checker can automatically recognize the builtin
variants of the matched functions.

I'll also make similar changes in GenericTaintChecker, but that checker
has separate and inconsistent rules for handling the normal and the
builtin variant of several functions (e.g. `memcpy` and
`__builtin_memcpy`), so I'll put those changes into a separate commit.

2024-04-11 10:44:35 +02:00

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