24 lines
852 B
Rust
24 lines
852 B
Rust
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//@compile-flags: -Zmiri-disable-isolation -Zmiri-preemption-rate=0
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//@ignore-target-windows: No libc on Windows
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use std::ffi::CStr;
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use std::ffi::CString;
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use std::thread;
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fn main() {
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unsafe {
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thread::spawn(|| {
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// Access the environment in another thread without taking the env lock
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let k = CString::new("MIRI_ENV_VAR_TEST".as_bytes()).unwrap();
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let s = libc::getenv(k.as_ptr()) as *const libc::c_char;
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if s.is_null() {
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panic!("null");
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}
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let _s = String::from_utf8_lossy(CStr::from_ptr(s).to_bytes());
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});
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thread::yield_now();
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// After the main thread exits, env vars will be cleaned up -- but because we have not *joined*
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// the other thread, those accesses technically race with those in the other thread.
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}
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}
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