On Tue, May 20, 2025 at 03:45:19PM +0200, David Brown via Gcc-help wrote: > If GCC wanted to add a way to re-interpret bits of a value of one type > as though it were another type, then perhaps __builtin_bit_cast could be > supported in C as well as C++. +1. I proposed this when it was done for C++, but no one (including myself) implemented it. No one was really opposed either iirc :-) > I would expect that (and the C++ > function std::bit_cast<>) to do the conversion with optimal object code > and no run-time checking, regardless of any sanitiser flags. Yeah, that is exactly what bit casts are :-) > But that > would only help here if clang did the same. LLVM can do whatever they want to do. But they claim to be 100% compatible to GCC, and in some things they actually are. Segher
