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Emit a warning when optimization fuel runs out

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`eprintln!` gets swallowed by Cargo too easily.
This commit is contained in:
Jonas Schievink 2020-05-10 00:33:08 +02:00
parent bad3bf622b
commit 62116c31cd
5 changed files with 11 additions and 7 deletions
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2
src/librustc_session/session.rs
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@ -813,7 +813,7 @@ impl Session {
let mut fuel = self.optimization_fuel.lock(); let mut fuel = self.optimization_fuel.lock();
ret = fuel.remaining != 0; ret = fuel.remaining != 0;
if fuel.remaining == 0 && !fuel.out_of_fuel { if fuel.remaining == 0 && !fuel.out_of_fuel {
eprintln!("optimization-fuel-exhausted: {}", msg()); self.warn(&format!("optimization-fuel-exhausted: {}", msg()));
fuel.out_of_fuel = true; fuel.out_of_fuel = true;
} else if fuel.remaining > 0 { } else if fuel.remaining > 0 {
fuel.remaining -= 1; fuel.remaining -= 1;

3
src/test/ui/optimization-fuel-0.rs
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@ -4,8 +4,7 @@
use std::mem::size_of; use std::mem::size_of;
// (#55495: The --error-format is to sidestep an issue in our test harness) // compile-flags: -Z fuel=foo=0
// compile-flags: --error-format human -Z fuel=foo=0
struct S1(u8, u16, u8); struct S1(u8, u16, u8);
struct S2(u8, u16, u8); struct S2(u8, u16, u8);

5
src/test/ui/optimization-fuel-0.stderr
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@ -1 +1,4 @@
optimization-fuel-exhausted: Reorder fields of "S1" warning: optimization-fuel-exhausted: Reorder fields of "S1"
warning: 1 warning emitted

3
src/test/ui/optimization-fuel-1.rs
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@ -4,8 +4,7 @@
use std::mem::size_of; use std::mem::size_of;
// (#55495: The --error-format is to sidestep an issue in our test harness) // compile-flags: -Z fuel=foo=1
// compile-flags: --error-format human -Z fuel=foo=1
struct S1(u8, u16, u8); struct S1(u8, u16, u8);
struct S2(u8, u16, u8); struct S2(u8, u16, u8);

5
src/test/ui/optimization-fuel-1.stderr
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@ -1 +1,4 @@
optimization-fuel-exhausted: Reorder fields of "S2" warning: optimization-fuel-exhausted: Reorder fields of "S2"
warning: 1 warning emitted