[issue17269] getaddrinfo segfaults on OS X when provided with invalid arguments combinations

[Ned Deily]

Ned Deily added the comment:

The crash occurs in OS X's libsystem_info on 10.8.

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_info.dylib          	0x00007fff86bacd9e mdns_addrinfo + 299
1   libsystem_info.dylib          	0x00007fff86badae2 search_addrinfo + 152
2   libsystem_info.dylib          	0x00007fff86b97f6d si_addrinfo + 1641
3   libsystem_info.dylib          	0x00007fff86b9785c getaddrinfo + 171
4   _socket.so                    	0x0000000100516524 socket_getaddrinfo + 500

It's also reproducible back on OS X 10.6 crashing there in libSystem. (It looks like earlier versions of OS X don't support the AI_NUMERICSERV flag.)  So it would appear to be a long-standing OS X bug.  Possible actions: open an Apple incident and patch socket.getaddrinfo to catch this case.

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nosy: +ned.deily

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<http://bugs.python.org/issue17269>
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