upstream/mercurial-mirror Files · rust/hg-direct-ffi/src/lib.rs

dirs: fix out-of-bounds access in Py3...

dirs: fix out-of-bounds access in Py3 The hack for mutating Python's variable-length integers that was ported to py3 in (dirs: port PyInt code to work on Python 3, 2016-10-08) was reading from ob_digit[1] instead of ob_digit[0] for some reason. Space for ob_digit[1] would only be allocated for integers larger than 30 bits, so we ended up writing to unallocated memory. Also, we would write an integer that's 2^30 times too large, so we would never free these integers. Found by AddressSanitizer. Differential Revision: https://phab.mercurial-scm.org/D7597

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             lib.rs
        
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                | application/rls-services+xml
            
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      // Copyright 2018 Georges Racinet <gracinet@anybox.fr>

      //

      // This software may be used and distributed according to the terms of the

      // GNU General Public License version 2 or any later version.

      //! Bindings for CPython extension code

      //!

      //! This exposes methods to build and use a `rustlazyancestors` iterator

      //! from C code, using an index and its parents function that are passed

      //! from the caller at instantiation.

      extern crate hg;

      extern crate libc;

      mod ancestors;

      pub use ancestors::{

          rustlazyancestors_contains, rustlazyancestors_drop,

          rustlazyancestors_init, rustlazyancestors_next,

      };

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				// Copyright 2018 Georges Racinet <gracinet@anybox.fr>
				//
				// This software may be used and distributed according to the terms of the
				// GNU General Public License version 2 or any later version.

				//! Bindings for CPython extension code
				//!
				//! This exposes methods to build and use a `rustlazyancestors` iterator
				//! from C code, using an index and its parents function that are passed
				//! from the caller at instantiation.

				extern crate hg;
				extern crate libc;

				mod ancestors;
				pub use ancestors::{
				rustlazyancestors_contains, rustlazyancestors_drop,
				rustlazyancestors_init, rustlazyancestors_next,
				};