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Rollup of 9 pull requests #72681

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Rollup of 9 pull requests #72681

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ef485c6
Impl Error for Infallible
a1phyr Apr 7, 2020
2ce3f85
Tweak and stabilize AtomicN::fetch_update
sfackler May 3, 2020
31c8205
Update src/libcore/sync/atomic.rs
sfackler May 3, 2020
ba0d0c2
Stabilization of weak-into-raw
vorner May 17, 2020
1d7a731
Stabilize AtomicN::fetch_min and AtomicN::fetch_max
Amanieu May 18, 2020
a8ed9aa
impl From<[T; N]> for Box<[T]>
pickfire Apr 13, 2020
526dbd3
Clarified the documentation for Formatter::precision
Lucretiel May 22, 2020
2df69ba
Stabilize str_strip feature
tesuji May 22, 2020
cd5f228
Added a codegen test for a recent optimization for overflow-checks=on
alex May 24, 2020
42ddcd3
Add myself to .mailmap
ldm0 May 27, 2020
cb31457
Rollup merge of #71095 - pickfire:box-from-array, r=dtolnay
JohnTitor May 28, 2020
53bd7de
Rollup merge of #71633 - a1phyr:infallible_error, r=dtolnay
JohnTitor May 28, 2020
65951ad
Rollup merge of #71843 - sfackler:cas-loop-cleanup, r=dtolnay
JohnTitor May 28, 2020
d7eed17
Rollup merge of #72288 - vorner:stabilize-weak-into-raw, r=dtolnay
JohnTitor May 28, 2020
7caf5fb
Rollup merge of #72324 - Amanieu:atomic_minmax, r=dtolnay
JohnTitor May 28, 2020
a32e584
Rollup merge of #72452 - Lucretiel:precision-doc, r=dtolnay
JohnTitor May 28, 2020
46ad679
Rollup merge of #72466 - lzutao:stabilize_str-strip, r=dtolnay
JohnTitor May 28, 2020
59b6887
Rollup merge of #72547 - alex:patch-1, r=oli-obk
JohnTitor May 28, 2020
08cc539
Rollup merge of #72645 - ldm0:mailmap, r=nikomatsakis
JohnTitor May 28, 2020
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26 changes: 26 additions & 0 deletions src/test/codegen/integer-overflow.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
// no-system-llvm
// compile-flags: -O -C overflow-checks=on

#![crate_type = "lib"]


pub struct S1<'a> {
data: &'a [u8],
position: usize,
}

// CHECK-LABEL: @slice_no_index_order
#[no_mangle]
pub fn slice_no_index_order<'a>(s: &'a mut S1, n: usize) -> &'a [u8] {
// CHECK-NOT: slice_index_order_fail
let d = &s.data[s.position..s.position+n];
s.position += n;
return d;
}

// CHECK-LABEL: @test_check
#[no_mangle]
pub fn test_check<'a>(s: &'a mut S1, x: usize, y: usize) -> &'a [u8] {
// CHECK: slice_index_order_fail
&s.data[x..y]
}