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rustc hangs when compiling for wasm32 #76281
Description
hang.rs
fn main() {
let mut v: Vec<&()> = Vec::new();
v.sort_by_key(|&r| r as *const ());
}Meta
rustc --version --verbose:
rustc --version --verbose
rustc 1.46.0 (04488afe3 2020-08-24)
binary: rustc
commit-hash: 04488afe34512aa4c33566eb16d8c912a3ae04f9
commit-date: 2020-08-24
host: x86_64-apple-darwin
release: 1.46.0
LLVM version: 10.0
Error output
I compile with this:
rustc hang.rs -C opt-level=2 --target wasm32-unknown-unknown
And that hangs rustc.
Details
opt-level must be 2 or higher, and --target must be wasm32-unknown-unknown.
It does NOT hang with rustc 1.48.0-nightly (d006f5734 2020-08-28), so possibly this is a bug that has already been fixed.
Activity
Rollup merge of rust-lang#80902 - JohnTitor:issue-76281, r=Mark-Simul…
Rollup merge of rust-lang#80902 - JohnTitor:issue-76281, r=Mark-Simul…
Auto merge of rust-lang#81089 - m-ou-se:rollup-z7iac6i, r=m-ou-se