================ @@ -631,6 +631,9 @@ Improvements to Clang's diagnostics - Clang now diagnoses dangling references for C++20's parenthesized aggregate initialization (#101957). +- A new off-by-default warning ``-Wms-bitfield-compatibility`` has been added to alert to cases where bit-field ---------------- rnk wrote:
I wanted to bikeshed the name. Is this really a compatibility warning? It's a compatibility issue for someone trying to use C structs to do memory-mapped I/O or something, but for LLVM's application, it's supposed to be a warning about extra bitfield padding, suggesting a name like `-Wms-bitfield-padding` or `-Wms-bitfield-packing`. It also doesn't catch all bitfield layout differences. There are cases like [this](https://godbolt.org/z/hvd8aY8ba). Do we care about that, or is it better to leave that to `-Wpadding`? ``` struct Foo { char a; int x : 7; // msvc aligns to 4, gcc doesn't int y : 9; }; ``` https://github.com/llvm/llvm-project/pull/117428 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
