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properly recognize log levels

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This commit is contained in:
Ralf Jung 2018-10-31 10:58:19 +01:00
parent 5397f2e436
commit 016009a301
1 changed files with 5 additions and 5 deletions
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10
src/bin/miri.rs
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@ -13,6 +13,7 @@ extern crate syntax;
extern crate log;
use std::path::PathBuf;
use std::str::FromStr;
use std::env;
use rustc::session::Session;
@ -172,15 +173,14 @@ fn init_late_loggers() {
if env::var("RUST_LOG").is_err() {
// We try to be a bit clever here: If MIRI_LOG is just a single level
// used for everything, we only apply it to the parts of rustc that are
// CTFE-related. Only if MIRI_LOG contains `module=level`, we just
// use the same value for RUST_LOG.
// CTFE-related. Otherwise, we use it verbatim for RUST_LOG.
// This way, if you set `MIRI_LOG=trace`, you get only the right parts of
// rustc traced, but you can also do `MIRI_LOG=miri=trace,rustc_mir::interpret=debug`.
if var.contains('=') {
env::set_var("RUST_LOG", &var);
} else {
if log::Level::from_str(&var).is_ok() {
env::set_var("RUST_LOG",
&format!("rustc::mir::interpret={0},rustc_mir::interpret={0}", var));
} else {
env::set_var("RUST_LOG", &var);
}
rustc_driver::init_rustc_env_logger();
}