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[idl_parser] Validate force_align on all possible paths (#6430)

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* [idl_parser] Validate `force_align` on all possible paths

- added validation of `force_align` for `Vector`.
- added assertion to `flatbuffers::PreAlign` method

These changes should resolve following oss-fuzz issues:
- 6275816289861632
- 5713529908887552
- 4761242994606080

* size_t problem on Mac

* Fix review notes
This commit is contained in:
Vladimir Glavnyy
2021-02-11 02:37:16 +07:00
committed by GitHub
parent 6f3e45eca1
commit fee095410b
5 changed files with 39 additions and 14 deletions
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5
include/flatbuffers/base.h
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@@ -330,6 +330,11 @@ typedef uintmax_t largest_scalar_t;
// We support aligning the contents of buffers up to this size.
#define FLATBUFFERS_MAX_ALIGNMENT 16
inline bool VerifyAlignmentRequirements(size_t align, size_t min_align = 1) {
return (min_align <= align) && (align <= (FLATBUFFERS_MAX_ALIGNMENT)) &&
(align & (align - 1)) == 0; // must be power of 2
}
#if defined(_MSC_VER)
#pragma warning(disable: 4351) // C4351: new behavior: elements of array ... will be default initialized
#pragma warning(push)