Fix reading past end of array. #1468
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If we aren't going to merge #1467, this fixes a bug that was noted there. |
dmachaj
reviewed
Jan 14, 2025
Fix a bug in the `NonDelegatingGetIids()` implementation that could cause reading past the end of the returned array. `std::copy()` returns a pointer to the next element in the array after the last element copied. The output argument `*array` was being assinged to this pointer after the first copy, causing it to no longer point to the beginning of the array. If the caller tries to access the full array after this, it will read past the end of the array and will miss the first elements of the array. To fix, introduce a new temporary `_array` variable to pass the result of the first copy as the starting point of the second copy. Also add a test that failed before the fix and passes after the fix.
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Updated:
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dmachaj
approved these changes
Jan 21, 2025
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Looks good to me. |
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Fix a bug in the
NonDelegatingGetIids()implementation that could cause reading past the end of the returned array.std::copy()returns a pointer to the next element in the array after the last element copied. The output argument*arraywas being assinged to this pointer after the first copy, causing it to no longer point to the beginning of the array. If the caller tries to access the full array after this, it will read past the end of the array and will miss the first elements of the array.To fix, introduce a new temporary
_arrayvariable to pass the result of the first copy as the starting point of the second copy. Also add a test that failed before the fix and passes after the fix.