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be83a12f
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体验新版 GitCode,发现更多精彩内容 >>
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be83a12f
编写于
6月 06, 2012
作者:
G
Graydon Hoare
浏览文件
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电子邮件补丁
差异文件
Add some testcases for bug #2470.
上级
d5d7b3b9
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
69 addition
and
0 deletion
+69
-0
src/test/run-fail/bug-2470-bounds-check-overflow-2.rs
src/test/run-fail/bug-2470-bounds-check-overflow-2.rs
+17
-0
src/test/run-fail/bug-2470-bounds-check-overflow-3.rs
src/test/run-fail/bug-2470-bounds-check-overflow-3.rs
+28
-0
src/test/run-fail/bug-2470-bounds-check-overflow.rs
src/test/run-fail/bug-2470-bounds-check-overflow.rs
+24
-0
未找到文件。
src/test/run-fail/bug-2470-bounds-check-overflow-2.rs
0 → 100644
浏览文件 @
be83a12f
// xfail-test
// error-pattern:bounds check
fn
main
()
{
let
x
=
[
1u
,
2u
,
3u
];
// This should cause a bounds-check failure, but may not if we do our
// bounds checking by comparing a scaled index value to the vector's
// length (in bytes), because the scaling of the index will cause it to
// wrap around to a small number.
let
idx
=
uint
::
max_value
&
!
(
uint
::
max_value
>>
1u
);
#
error
(
"ov2 idx = 0x%x"
,
idx
);
// This should fail.
#
error
(
"ov2 0x%x"
,
x
[
idx
]);
}
\ No newline at end of file
src/test/run-fail/bug-2470-bounds-check-overflow-3.rs
0 → 100644
浏览文件 @
be83a12f
// xfail-test
// error-pattern:bounds check
#[cfg(target_arch=
"x86"
)]
fn
main
()
{
let
x
=
[
1u
,
2u
,
3u
];
// This should cause a bounds-check failure, but may not if we do our
// bounds checking by truncating the index value to the size of the
// machine word, losing relevant bits of the index value.
// This test is only meaningful on 32-bit hosts.
let
idx
=
u64
::
max_value
&
!
(
u64
::
max_value
>>
1u
);
#
error
(
"ov3 idx = 0x%8.8x%8.8x"
,
(
idx
>>
32
)
as
uint
,
idx
as
uint
);
// This should fail.
#
error
(
"ov3 0x%x"
,
x
[
idx
]);
}
#[cfg(target_arch=
"x86_64"
)]
fn
main
()
{
// This version just fails anyways, for symmetry on 64-bit hosts.
let
x
=
[
1u
,
2u
,
3u
];
#
error
(
"ov3 0x%x"
,
x
[
200
]);
}
src/test/run-fail/bug-2470-bounds-check-overflow.rs
0 → 100644
浏览文件 @
be83a12f
// error-pattern:bounds check
fn
main
()
{
// This should cause a bounds-check failure, but may not if we do our
// bounds checking by comparing the scaled index to the vector's
// address-bounds, since we've scaled the index to wrap around to the
// address of the 0th cell in the array (even though the index is
// huge).
let
x
=
[
1u
,
2u
,
3u
];
vec
::
unpack_slice
(
x
)
{|
p
,
_
len
|
let
base
=
p
as
uint
;
// base = 0x1230 say
let
idx
=
base
/
sys
::
size_of
::
<
uint
>
();
// idx = 0x0246 say
#
error
(
"ov1 base = 0x%x"
,
base
);
#
error
(
"ov1 idx = 0x%x"
,
idx
);
#
error
(
"ov1 sizeof::<uint>() = 0x%x"
,
sys
::
size_of
::
<
uint
>
());
#
error
(
"ov1 idx * sizeof::<uint>() = 0x%x"
,
idx
*
sys
::
size_of
::
<
uint
>
());
// This should fail.
#
error
(
"ov1 0x%x"
,
x
[
idx
]);
}
}
\ No newline at end of file
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