Unsized function argument causes LLVM segfault

STR

pub fn example(ref s: str) {}

fn main() {}

Result

rustc 1.18.0-nightly (3b5754e5c 2017-04-10)
warning: unused variable: `s`
 --> <anon>:1:16
  |
1 | pub fn example(ref s: str) {}
  |                ^^^^^
  |
  = note: #[warn(unused_variables)] on by default

Segmentation fault (core dumped)

This is not an LLVM assertion, but rather a NULL pointer passed to val_ty.

I tried to replicate issue, but failed to do so.

 $ rustc -vV
rustc 1.18.0-nightly (ad36c2f55 2017-04-09)
binary: rustc
commit-hash: ad36c2f5528d617db66c244d8bcbfc4b36da0ca0
commit-date: 2017-04-09
host: x86_64-apple-darwin
release: 1.18.0-nightly
LLVM version: 3.9

 $ rustc src/main.rs
warning: unused variable: `s`
 --> src/main.rs:1:16
  |
1 | pub fn example(ref s: str) {}
  |                ^^^^^
  |
  = note: #[warn(unused_variables)] on by default

 $ ./main

 $

What process and commands did you run?

I cannot reproduce today. Marking as E-needstest.

add test for rust-lang#41229

Rollup merge of rust-lang#44464 - Dushistov:master, r=alexcrichton

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Unsized function argument causes LLVM segfault #41229

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Unsized function argument causes LLVM segfault #41229

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nateozem commented on Apr 18, 2017

Mark-Simulacrum commented on Jun 21, 2017

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