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Rollup merge of #125063 - tbu-:pr_set_ice_hook_env, r=michaelwoerister

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Don't call `env::set_var` in `rustc_driver::install_ice_hook`

Modifying an environment variable would make the function unsafe to call.
This commit is contained in:
Matthias Krüger 2024-05-13 20:29:19 +02:00 committed by GitHub
commit 472391dbf6
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1 changed files with 3 additions and 2 deletions
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5
compiler/rustc_driver_impl/src/lib.rs
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@ -11,6 +11,7 @@
#![allow(internal_features)]
#![feature(decl_macro)]
#![feature(let_chains)]
#![feature(panic_backtrace_config)]
#![feature(panic_update_hook)]
#![feature(result_flattening)]
@ -1317,8 +1318,8 @@ pub fn install_ice_hook(
// by the user. Compiler developers and other rustc users can
// opt in to less-verbose backtraces by manually setting "RUST_BACKTRACE"
// (e.g. `RUST_BACKTRACE=1`)
if std::env::var_os("RUST_BACKTRACE").is_none() {
std::env::set_var("RUST_BACKTRACE", "full");
if env::var_os("RUST_BACKTRACE").is_none() {
panic::set_backtrace_style(panic::BacktraceStyle::Full);
}
let using_internal_features = Arc::new(std::sync::atomic::AtomicBool::default());