Bug#1095866: llvm-toolchain-19: unsoundness/miscompilations on i386

[Fabian Grünbichler]

On Fri, Apr 25, 2025, at 5:19 PM, Fabian Grünbichler wrote:
> I missed that the LLVM change was *only* done for 19 (and if the rustc
> with the raised/reverted baseline would have behaved unexpectedly, I might
> have realized sooner!).

and this 19 here should of course been an 18 (hopefully clear from context,
but better make it explicit rather than causing more confusion!).