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体验新版 GitCode,发现更多精彩内容 >>
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62b1e653
编写于
5月 29, 2018
作者:
D
David Wood
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差异文件
Ensure that all statements in block are visited not just successors of a block.
上级
9c637144
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
18 addition
and
8 deletion
+18
-8
src/librustc_mir/dataflow/impls/borrows.rs
src/librustc_mir/dataflow/impls/borrows.rs
+18
-8
未找到文件。
src/librustc_mir/dataflow/impls/borrows.rs
浏览文件 @
62b1e653
...
...
@@ -66,8 +66,8 @@ fn precompute_borrows_out_of_scope<'a, 'tcx>(
let
mut
visited
=
FxHashSet
();
visited
.insert
(
location
);
debug!
(
"borrow {:?}
starts at {:?}"
,
borrow_index
,
location
);
debug!
(
"borrow {:?}
(region: {:?}) starts at {:?}"
,
borrow_index
,
borrow_region
,
location
);
while
let
Some
(
location
)
=
stack
.pop
()
{
// If region does not contain a point at the location, then add to list and skip
// successor locations.
...
...
@@ -80,15 +80,25 @@ fn precompute_borrows_out_of_scope<'a, 'tcx>(
continue
;
}
// Add successors to locations to visit, if not visited before.
let
bb_data
=
&
mir
[
location
.block
];
if
let
Some
(
ref
terminator
)
=
bb_data
.terminator
{
for
block
in
terminator
.successors
()
{
let
loc
=
block
.start_location
();
if
visited
.insert
(
loc
)
{
stack
.push
(
loc
);
// If this is the last statement in the block, then add the
// terminator successors next.
if
location
.statement_index
==
bb_data
.statements
.len
()
-
1
{
// Add successors to locations to visit, if not visited before.
if
let
Some
(
ref
terminator
)
=
bb_data
.terminator
{
for
block
in
terminator
.successors
()
{
let
loc
=
block
.start_location
();
if
visited
.insert
(
loc
)
{
stack
.push
(
loc
);
}
}
}
}
else
{
// Visit next statement in block.
let
loc
=
location
.successor_within_block
();
if
visited
.insert
(
loc
)
{
stack
.push
(
loc
);
}
}
}
}
...
...
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