clang-tidy - modernize-avoid-c-style-cast — Extra Clang Tools 22.1.8 documentation

# Extra Clang Tools 22.1.8 documentation

## clang-tidy - modernize-avoid-c-style-cast

# modernize-avoid-c-style-cast

Finds usages of C-style casts.

C-style casts can perform a variety of different conversions (`const_cast`, `static_cast`, `reinterpret_cast`, or a combination). This makes them dangerous as the intent is not clear, and they can silently perform unsafe conversions between incompatible types.

This check is similar to -Wold-style-cast, but it suggests automated fixes in some cases. The reported locations should not be different from the ones generated by -Wold-style-cast.

## Examples

    class A {
      public:
      std::string v;
    };

    A a;
    double *num = (double*)(&a);           // Compiles! Hides danger
    // num = static_cast<double*>(&a);     // Won't compile (good!)
    num = reinterpret_cast<double*>(&a);   // Compiles, danger is explicit

## References

Corresponding cpplint.py check name: readability/casting.