Sure. I did not mean to imply that SEH itsef requires the C runtime. However, the __CxxFrameHandler3 that Rust/llvm uses would need to be rewritten. IIRC llvm

Sure. I did not mean to imply that SEH itsef requires the C runtime. However, the __CxxFrameHandler3 that Rust/llvm uses would need to be rewritten. IIRC llvm itself generates calls to __CxxFrameHandler3 when SEH is being used, making it awkward to replace with something that's not compatible.