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when MIRI_LOG is set, set RUSTC_LOG_ENTRY_EXIT #2113

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Merged
bors merged 1 commit into from
May 11, 2022
Merged

when MIRI_LOG is set, set RUSTC_LOG_ENTRY_EXIT #2113

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4 changes: 4 additions & 0 deletions src/bin/miri.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -155,6 +155,10 @@ fn init_early_loggers() {
// initialize them both, and we always initialize `miri`'s first.
let env = env_logger::Env::new().filter("MIRI_LOG").write_style("MIRI_LOG_STYLE");
env_logger::init_from_env(env);
// Enable verbose entry/exit logging by default if MIRI_LOG is set.
if env::var_os("MIRI_LOG").is_some() && env::var_os("RUSTC_LOG_ENTRY_EXIT").is_none() {
env::set_var("RUSTC_LOG_ENTRY_EXIT", "1");
}
// We only initialize `rustc` if the env var is set (so the user asked for it).
// If it is not set, we avoid initializing now so that we can initialize
// later with our custom settings, and *not* log anything for what happens before
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