fn foo() {
    'fl: for _ in 0..10 { break; } //~ NOTE first declared here
    'fl: loop { break; }           //~ WARN label name `'fl` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'fl already in scope

    'lf: loop { break; }           //~ NOTE first declared here
    'lf: for _ in 0..10 { break; } //~ WARN label name `'lf` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'lf already in scope
    'wl: while 2 > 1 { break; }    //~ NOTE first declared here
    'wl: loop { break; }           //~ WARN label name `'wl` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'wl already in scope
    'lw: loop { break; }           //~ NOTE first declared here
    'lw: while 2 > 1 { break; }    //~ WARN label name `'lw` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'lw already in scope
    'fw: for _ in 0..10 { break; } //~ NOTE first declared here
    'fw: while 2 > 1 { break; }    //~ WARN label name `'fw` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'fw already in scope
    'wf: while 2 > 1 { break; }    //~ NOTE first declared here
    'wf: for _ in 0..10 { break; } //~ WARN label name `'wf` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'wf already in scope
    'tl: while let Some(_) = None::<i32> { break; } //~ NOTE first declared here
    'tl: loop { break; }           //~ WARN label name `'tl` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'tl already in scope
    'lt: loop { break; }           //~ NOTE first declared here
    'lt: while let Some(_) = None::<i32> { break; }
                                   //~^ WARN label name `'lt` shadows a label name that is already in scope
                                   //~| NOTE lifetime 'lt already in scope
}
// Issue #21633: reject duplicate loop labels in function bodies.
// This is testing the exact cases that are in the issue description.
Issue #21633: reject duplicate loop labels in function bodies.
This is testing the exact cases that are in the issue description.
Issue #21633 : reject duplicate loop labels in function bodies . This is testing the exact cases that are in the issue description .
fn foo() {
    'fl: for _ in 0..10 { break; } //~ NOTE first declared here
    'fl: loop { break; }           //~ WARN label name `'fl` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'fl already in scope
    'lf: loop { break; }           //~ NOTE first declared here
    'lf: for _ in 0..10 { break; } //~ WARN label name `'lf` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'lf already in scope
    'wl: while 2 > 1 { break; }    //~ NOTE first declared here
    'wl: loop { break; }           //~ WARN label name `'wl` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'wl already in scope
    'lw: loop { break; }           //~ NOTE first declared here
    'lw: while 2 > 1 { break; }    //~ WARN label name `'lw` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'lw already in scope
    'fw: for _ in 0..10 { break; } //~ NOTE first declared here
    'fw: while 2 > 1 { break; }    //~ WARN label name `'fw` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'fw already in scope
    'wf: while 2 > 1 { break; }    //~ NOTE first declared here
    'wf: for _ in 0..10 { break; } //~ WARN label name `'wf` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'wf already in scope
    'tl: while let Some(_) = None::<i32> { break; } //~ NOTE first declared here
    'tl: loop { break; }           //~ WARN label name `'tl` shadows a label name that is already in scope
                                   //~^ NOTE lifetime 'tl already in scope
    'lt: loop { break; }           //~ NOTE first declared here
    'lt: while let Some(_) = None::<i32> { break; }
                                   //~^ WARN label name `'lt` shadows a label name that is already in scope
                                   //~| NOTE lifetime 'lt already in scope
}
fn foo ( ) { ' fl : for _ in 0 .. 10 { break ; } //~ NOTE first declared here ' fl : loop { break ; } //~ WARN label name `'fl` shadows a label name that is already in scope //~^ NOTE lifetime 'fl already in scope ' lf : loop { break ; } //~ NOTE first declared here ' lf : for _ in 0 .. 10 { break ; } //~ WARN label name `'lf` shadows a label name that is already in scope //~^ NOTE lifetime 'lf already in scope ' wl : while 2 > 1 { break ; } //~ NOTE first declared here ' wl : loop { break ; } //~ WARN label name `'wl` shadows a label name that is already in scope //~^ NOTE lifetime 'wl already in scope ' lw : loop { break ; } //~ NOTE first declared here ' lw : while 2 > 1 { break ; } //~ WARN label name `'lw` shadows a label name that is already in scope //~^ NOTE lifetime 'lw already in scope ' fw : for _ in 0 .. 10 { break ; } //~ NOTE first declared here ' fw : while 2 > 1 { break ; } //~ WARN label name `'fw` shadows a label name that is already in scope //~^ NOTE lifetime 'fw already in scope ' wf : while 2 > 1 { break ; } //~ NOTE first declared here ' wf : for _ in 0 .. 10 { break ; } //~ WARN label name `'wf` shadows a label name that is already in scope //~^ NOTE lifetime 'wf already in scope ' tl : while let Some ( _ ) = None :: < i32 > { break ; } //~ NOTE first declared here ' tl : loop { break ; } //~ WARN label name `'tl` shadows a label name that is already in scope //~^ NOTE lifetime 'tl already in scope ' lt : loop { break ; } //~ NOTE first declared here ' lt : while let Some ( _ ) = None :: < i32 > { break ; } //~^ WARN label name `'lt` shadows a label name that is already in scope //~| NOTE lifetime 'lt already in scope }
Issue #21633: reject duplicate loop labels in function bodies.
Issue #21633 : reject duplicate loop labels in function bodies .