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ignore unused things in the stdlib #2619

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ignore unused things in the stdlib #2619

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12 changes: 7 additions & 5 deletions cargo-miri/src/phases.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -384,11 +384,13 @@ pub fn phase_rustc(mut args: impl Iterator<Item = String>, phase: RustcPhase) {
}
}

// During setup, patch the panic runtime for `libpanic_abort` (mirroring what bootstrap usually does).
if phase == RustcPhase::Setup
&& get_arg_flag_value("--crate-name").as_deref() == Some("panic_abort")
{
cmd.arg("-C").arg("panic=abort");
if phase == RustcPhase::Setup {
// During setup, ignore unused items, the stdlib contains some `cfg(miri)` .
cmd.arg("-A").arg("unused");
// Also patch the panic runtime for `libpanic_abort` (mirroring what bootstrap usually does).
if get_arg_flag_value("--crate-name").as_deref() == Some("panic_abort") {
cmd.arg("-C").arg("panic=abort");
}
}
} else {
// For host crates (but not when we are just printing some info),
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