thodg/libgit2/src

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  • Hash : d1bfe614
    Author : Julian Ganz
    Date : 2018-08-04T19:30:40

    parse: Do not initialize the content in context to NULL String operations in libgit2 are supposed to never receive `NULL`, e.g. they are not `NULL`-save. In the case of `git__linenlen()`, invocation with `NULL` leads to undefined behavior. In a `git_parse_ctx` however, the `content` field used in these operations was initialized to `NULL` if the `git_parse_ctx_init()` was called with `NULL` for `content` or `0` for `content_len`. For the latter case, the initialization function even contained some logic for initializing `content` with `NULL`. This commit mitigates triggering undefined behavior by rewriting the logic. Now `content` is always initialized to a non-null buffer. Instead of a null buffer, an empty string is used for denoting an empty buffer.

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