1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
# mode: error
cimport cython
cdef takes_a_lock(cython.pymutex l):
pass
cdef cython.pymutex uncopyable():
cdef cython.pymutex l
cdef object o
takes_a_lock(l)
l2 = l
o = l
return l
def no_yield():
cdef cython.pymutex l
with l:
yield # banned due to very high possibility of deadlock
cdef void misuse_the_gil() noexcept nogil:
cdef cython.pymutex l
with l:
with gil:
pass
_ERRORS = """
11:17: cython.pymutex cannot be copied
12:9: cython.pymutex cannot be copied
13:8: Cannot convert 'cython.pymutex' to Python object
14:11: cython.pymutex cannot be copied
18:9: Cannot use a 'with' statement with a 'cython.pymutex' in a generator. If you really want to do this (and you are confident that there are no deadlocks) then use try-finally.
"""
|
