rust/tests/fail/environ-gets-deallocated.rs
2022-07-11 11:48:56 +00:00

25 lines
677 B
Rust

//@ignore-windows: Windows does not have a global environ list that the program can access directly
#[cfg(any(target_os = "linux", target_os = "freebsd"))]
fn get_environ() -> *const *const u8 {
extern "C" {
static mut environ: *const *const u8;
}
unsafe { environ }
}
#[cfg(target_os = "macos")]
fn get_environ() -> *const *const u8 {
extern "C" {
fn _NSGetEnviron() -> *mut *const *const u8;
}
unsafe { *_NSGetEnviron() }
}
fn main() {
let pointer = get_environ();
let _x = unsafe { *pointer };
std::env::set_var("FOO", "BAR");
let _y = unsafe { *pointer }; //~ ERROR: dereferenced after this allocation got freed
}