mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-25 00:03:43 +00:00
46 lines
1.3 KiB
Rust
46 lines
1.3 KiB
Rust
// revisions: old new
|
|
// LLVM 17 realizes double panic is not possible and doesn't generate calls
|
|
// to panic_cannot_unwind.
|
|
// [old]ignore-llvm-version: 17 - 99
|
|
// [new]min-llvm-version: 17
|
|
// compile-flags: -O
|
|
// ignore-debug: the debug assertions get in the way
|
|
// needs-unwind
|
|
#![crate_type = "lib"]
|
|
#![feature(shrink_to)]
|
|
|
|
// Make sure that `Vec::shrink_to_fit` never emits panics via `RawVec::shrink_to_fit`,
|
|
// "Tried to shrink to a larger capacity", because the length is *always* <= capacity.
|
|
|
|
// CHECK-LABEL: @shrink_to_fit
|
|
#[no_mangle]
|
|
pub fn shrink_to_fit(vec: &mut Vec<u32>) {
|
|
// CHECK-NOT: panic
|
|
vec.shrink_to_fit();
|
|
}
|
|
|
|
// CHECK-LABEL: @issue71861
|
|
#[no_mangle]
|
|
pub fn issue71861(vec: Vec<u32>) -> Box<[u32]> {
|
|
// CHECK-NOT: panic
|
|
|
|
// Call to panic_cannot_unwind in case of double-panic is expected
|
|
// on LLVM 16 and older, but other panics are not.
|
|
// old: filter
|
|
// old-NEXT: ; call core::panicking::panic_cannot_unwind
|
|
// old-NEXT: panic_cannot_unwind
|
|
|
|
// CHECK-NOT: panic
|
|
vec.into_boxed_slice()
|
|
}
|
|
|
|
// CHECK-LABEL: @issue75636
|
|
#[no_mangle]
|
|
pub fn issue75636<'a>(iter: &[&'a str]) -> Box<[&'a str]> {
|
|
// CHECK-NOT: panic
|
|
iter.iter().copied().collect()
|
|
}
|
|
|
|
// old: ; core::panicking::panic_cannot_unwind
|
|
// old: declare void @{{.*}}panic_cannot_unwind
|