Stack overflow in rustc, regression from 1.44 #74564
Description
First reported to me at wasm-bindgen/wasm-bindgen#2244 I believe the stack overflow is in rustc itself. This code when compiled yields:
$ rustc +1.44.0 foo.rs $ rustc +stable foo.rs thread 'rustc' has overflowed its stack fatal runtime error: stack overflow zsh: abort (core dumped) rustc +stable foo.rs $ rustc +nightly foo.rs thread 'rustc' has overflowed its stack fatal runtime error: stack overflow zsh: abort (core dumped) rustc +nightly foo.rs where nightly today is:
$ rustc +nightly -vV rustc 1.47.0-nightly (d7f945163 2020-07-19) binary: rustc commit-hash: d7f94516345a36ddfcd68cbdf1df835d356795c3 commit-date: 2020-07-19 host: x86_64-unknown-linux-gnu release: 1.47.0-nightly LLVM version: 10.0