zygoloid wrote: > Should `foo` in the following code return 4 when `-fstrict-flex-arrays` is 2 > or 3 (but not when it's 0 or 1) only when the target is `-std=c++23` or > newer? Or should it return 4 for older standards too?
We evaluate the operand of `__builtin_object_size` in `EM_IgnoreSideEffects` mode, which is documented as: > ```c++ > /// Evaluate in any way we know how. Don't worry about side-effects that > /// can't be modeled. > ``` If that mode doesn't already permit using unknown pointers and references in all language modes, then we should change it so that it does. `__builtin_object_size` is best-effort, but we should produce a constant value for it that's not the `-1` or `0` fallback value whenever we're able to do so. https://github.com/llvm/llvm-project/pull/95474 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
