[issue6239] c_char_p return value returns string, not bytes

[kai zhu]

kai zhu <kaizhu256 at gmail.com> added the comment:

i just found this bug independently, but yes its a bug, which i hope 
gets fixed for sake of extension community:

// test.c beg
char s[4] = "ab\xff";
char *foo() { return s; }
// test.c end

$ gcc -fPIC -g -c -Wall test.c
$ gcc -shared test.o -o test.so
$ python3.1 -c "import ctypes; lib = 
ctypes.cdll.LoadLibrary('./test.so'); lib.foo.restype = ctypes.c_char_p; 
lib.foo()"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
UnicodeDecodeError: 'utf8' codec can't decode byte 0xff in position 2: 
unexpected code byte

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nosy: +kaizhu

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue6239>
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