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compiler: always use var_os("RUST_BACKTRACE")

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There are 3 instances of var(...) and 3 instances of var_os(...); the
latter avoids an appearance of unhandled error, so use it everywhere.
This commit is contained in:
Tamir Duberstein 2023-10-06 08:51:30 -04:00
parent d4ba2b4c7c
commit 7654d4b398
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2 changed files with 3 additions and 3 deletions
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2
compiler/rustc_codegen_cranelift/build_system/main.rs
View File

@ -55,7 +55,7 @@ enum CodegenBackend {
}
fn main() {
if env::var("RUST_BACKTRACE").is_err() {
if env::var_os("RUST_BACKTRACE").is_none() {
env::set_var("RUST_BACKTRACE", "1");
}
env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");

4
compiler/rustc_driver_impl/src/lib.rs
View File

@ -1287,7 +1287,7 @@ pub fn ice_path() -> &'static Option<PathBuf> {
if !rustc_feature::UnstableFeatures::from_environment(None).is_nightly_build() {
return None;
}
if let Ok("0") = std::env::var("RUST_BACKTRACE").as_deref() {
if let Some(s) = std::env::var_os("RUST_BACKTRACE") && s == "0" {
return None;
}
let mut path = match std::env::var("RUSTC_ICE").as_deref() {
@ -1322,7 +1322,7 @@ pub fn install_ice_hook(bug_report_url: &'static str, extra_info: fn(&Handler))
// 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("RUST_BACKTRACE").is_err() {
if std::env::var_os("RUST_BACKTRACE").is_none() {
std::env::set_var("RUST_BACKTRACE", "full");
}