Segmentation fault: 11 error on OSX in release mode

[bvssvni]

Works in debug mode but fails in release mode.

OSX 10.11.5

Tested with:

• rustc 1.26.2 (594fb253c 2018-06-01)
• rustc 1.28.0-nightly (967c1f3be 2018-06-15)

extern crate regex;

use regex::Regex;

fn main() {
    let regex = Regex::new("^1$").unwrap();
    println!("{}", regex.is_match("1"));
}

[BurntSushi]

I've seen enough of the OSX TLS bug that this is probably a duplicate: rustwasm/wasm-bindgen#186

I'd be happy to re-open this if more evidence reveals that it's a different bug.

[bvssvni]

Wasn't trying to build wasm?

[BurntSushi]

@bvssvni The root cause comes from regex: rustwasm/wasm-bindgen#186 (comment)

I've seen this issue crop up in other areas as well. See also:

• [MacOS] nightly causes runtime segfault when crate binary is compiled with --release rust#50586
• segfault during stage2 build of dist x86_64-apple-darwin xcode 7.3 rust#48866
• Segfault update thread-local panic count on macOS in empty unit test rust#50867