Marco Elver de10e44b6f Thread Safety Analysis: Support warning on passing/returning pointers to guarded variables ...

Introduce `-Wthread-safety-pointer` to warn when passing or returning
pointers to guarded variables or guarded data. This is is analogous to
`-Wthread-safety-reference`, which performs similar checks for C++
references.

Adding checks for pointer passing is required to avoid false negatives
in large C codebases, where data structures are typically implemented
through helpers that take pointers to instances of a data structure.

The feature is planned to be enabled by default under `-Wthread-safety`
in the next release cycle. This gives time for early adopters to address
new findings.

Pull Request: https://github.com/llvm/llvm-project/pull/127396

2025-02-26 16:34:33 +01:00

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