thodg/libgit2/tests/buf

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  • Hash : 2e34efaa
    Author : Edward Thomson
    Date : 2018-10-21T13:10:06

    buf::oom tests: use custom allocator for oom failures Create a custom allocator for the `buf::oom` tests that will fail with out-of-memory errors in predictable ways. We were previously trying to guess the way that various allocators on various platforms would fail in a way such that `malloc`/`realloc` would return `NULL` (instead of aborting the application, or appearing suspicious to various instrumentation or static code analysis tools like valgrind.) Introduce a fake `malloc` and `realloc` that will return `NULL` on allocations requesting more than 100 bytes. Otherwise, we proxy to the default allocator. (It's important to use the _default_ allocator, not just call `malloc`, since the default allocator on Windows CI builds may be the debugging C runtime allocators which would not be compatible with a standard `malloc`.)

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