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Rollup of 5 pull requests #71513

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Rollup of 5 pull requests #71513

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740f228
Remove `predecessors_for`
ecstatic-morse Apr 21, 2020
59c7460
Use a ref-counted pointer for ownership of the predecessor cache
ecstatic-morse Apr 21, 2020
34dfbc3
Add module docs and restrict visibility
ecstatic-morse Apr 23, 2020
a75c792
Make type alias private
ecstatic-morse Apr 19, 2020
274c85f
Don't cache result of `in_any_value_of_ty` for locals
ecstatic-morse Apr 19, 2020
1343797
Lazily run dataflow for const qualification
ecstatic-morse Apr 19, 2020
15f95b1
Cycle errors now occur during const-eval, not checking
ecstatic-morse Apr 19, 2020
03817ec
Improve PanicInfo examples readability
GuillaumeGomez Apr 23, 2020
787eddc
Add BinaryHeap::retain as suggested in #42849
Apr 23, 2020
a62a8b0
Remove useless "" args
0xPoe Apr 24, 2020
5a2f4a5
Rollup merge of #71330 - ecstatic-morse:const-qualif-lazy, r=oli-obk
Dylan-DPC Apr 24, 2020
336a0c3
Rollup merge of #71392 - ecstatic-morse:body-predecessor-cache-arc, r…
Dylan-DPC Apr 24, 2020
440d600
Rollup merge of #71480 - GuillaumeGomez:panic-info-example, r=Dylan-DPC
Dylan-DPC Apr 24, 2020
16d2db5
Rollup merge of #71485 - arlopurcell:binary_heap_retain, r=Amanieu
Dylan-DPC Apr 24, 2020
fa09324
Rollup merge of #71512 - Rustin-Liu:rustin-patch-bootstrap, r=Mark-Si…
Dylan-DPC Apr 24, 2020
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Improve PanicInfo examples readability
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@GuillaumeGomez
GuillaumeGomez committed Apr 24, 2020
commit 03817ec78917d37d8d41b57029f2fb8e9474108c
12 changes: 9 additions & 3 deletions src/libcore/panic.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,11 @@ impl<'a> PanicInfo<'a> {
/// use std::panic;
///
/// panic::set_hook(Box::new(|panic_info| {
/// println!("panic occurred: {:?}", panic_info.payload().downcast_ref::<&str>().unwrap());
/// if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
/// println!("panic occurred: {:?}", s);
/// } else {
/// println!("panic occurred");
/// }
/// }));
///
/// panic!("Normal panic");
Expand Down Expand Up @@ -112,8 +116,10 @@ impl<'a> PanicInfo<'a> {
///
/// panic::set_hook(Box::new(|panic_info| {
/// if let Some(location) = panic_info.location() {
/// println!("panic occurred in file '{}' at line {}", location.file(),
/// location.line());
/// println!("panic occurred in file '{}' at line {}",
/// location.file(),
/// location.line(),
/// );
/// } else {
/// println!("panic occurred but can't get location information...");
/// }
Expand Down