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Boxiang Sun
cython
Commits
afeb193f
Commit
afeb193f
authored
Nov 27, 2016
by
Stefan Behnel
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Try to fix #1530: left-shift operations by more than 31 bits wrap around on 32bit systems
parent
ea1939d4
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1
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Cython/Utility/Optimize.c
Cython/Utility/Optimize.c
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Cython/Utility/Optimize.c
View file @
afeb193f
...
@@ -596,7 +596,7 @@ static PyObject* __Pyx_PyInt_{{op}}{{order}}(PyObject *op1, PyObject *op2, CYTHO
...
@@ -596,7 +596,7 @@ static PyObject* __Pyx_PyInt_{{op}}{{order}}(PyObject *op1, PyObject *op2, CYTHO
}
}
return
PyInt_FromLong
(
x
);
return
PyInt_FromLong
(
x
);
{{
elif
op
==
'
Lshift
'
}}
{{
elif
op
==
'
Lshift
'
}}
if
(
likely
(
a
==
(
a
<<
b
)
>>
b
)
)
{
if
(
likely
(
b
<
sizeof
(
long
)
*
8
&&
a
==
(
a
<<
b
)
>>
b
)
||
!
a
)
{
return
PyInt_FromLong
(
a
{{
c_op
}}
b
);
return
PyInt_FromLong
(
a
{{
c_op
}}
b
);
}
}
{{
else
}}
{{
else
}}
...
@@ -685,12 +685,12 @@ static PyObject* __Pyx_PyInt_{{op}}{{order}}(PyObject *op1, PyObject *op2, CYTHO
...
@@ -685,12 +685,12 @@ static PyObject* __Pyx_PyInt_{{op}}{{order}}(PyObject *op1, PyObject *op2, CYTHO
x
=
a
{{
c_op
}}
b
;
x
=
a
{{
c_op
}}
b
;
{{
if
op
==
'
Lshift
'
}}
{{
if
op
==
'
Lshift
'
}}
#ifdef HAVE_LONG_LONG
#ifdef HAVE_LONG_LONG
if
(
unlikely
(
a
!=
x
>>
b
)
)
{
if
(
unlikely
(
!
(
b
<
sizeof
(
long
)
*
8
&&
a
==
x
>>
b
))
&&
a
)
{
ll
{{
ival
}}
=
{{
ival
}};
ll
{{
ival
}}
=
{{
ival
}};
goto
long_long
;
goto
long_long
;
}
}
#else
#else
if
(
likely
(
a
==
x
>>
b
)
)
/* execute return statement below */
if
(
likely
(
b
<
sizeof
(
long
)
*
8
&&
a
==
x
>>
b
)
||
!
a
)
/* execute return statement below */
#endif
#endif
{{
endif
}}
{{
endif
}}
{{
endif
}}
{{
endif
}}
...
...
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