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protover: Fix memleak in Rust implementation.

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* FIXES #25127: https://bugs.torproject.org/25127.
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Isis Lovecruft
2018-02-06 02:31:04 +00:00
parent b5a8fd1566
commit 7ea9e080c5
3 changed files with 54 additions and 27 deletions
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o Minor bugfixes (Rust FFI):
- Fix a minor memory leak which would happen whenever the C code would call
the Rust implementation of protover_get_supported_protocols(). This was
due to the C version returning a static string, whereas the Rust version
newly allocated a CString to pass accross the FFI boundary. Consequently,
the C code was not expecting to need to free() what it was given. Fixes
bug 25127; bugfix on 0.3.2.1-alpha.