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| author | MarcoFalke <falke.marco@gmail.com> | 2018-04-09 08:06:08 -0400 |
|---|---|---|
| committer | MarcoFalke <falke.marco@gmail.com> | 2018-04-09 08:06:09 -0400 |
| commit | 603975b96a1542006f738a564171f98e264d32bf (patch) | |
| tree | 68505b464572d4176e9258288741487456925f14 | |
| parent | cd8e45b4e75ad2e62c0527a41870cf6e6242225d (diff) | |
| parent | 9142dfea8181c6649c8d6a8775d53bc3e14de847 (diff) | |
| download | bitcoin-603975b96a1542006f738a564171f98e264d32bf.tar.xz | |
Merge #12770: Use explicit casting in cuckoocache's compute_hashes(...) to clarify integer conversion
9142dfea81 Use explicit casting in cuckoocache's compute_hashes(...) to clarify integer conversion (practicalswift)
Pull request description:
Use explicit casting in cuckoocache's `compute_hashes(...)` to clarify integer conversion.
I discussed this code with the code's author @JeremyRubin who suggested patching it to avoid any confusion.
At least one static analyzer incorrectly warns about a shift past bitwidth (UB) here, so this patch will help avoid confusion for human reviewers and static analyzers alike :-)
Tree-SHA512: 0419ee31b422d2ffedbd1a100688ec0ff5b0c1690d6d92592f638ca8db07a21a9650cb467923108c6f14a38d2bf07d6e6c85d2d1d4b7da53ffe6919f94f32655
| -rw-r--r-- | src/cuckoocache.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/src/cuckoocache.h b/src/cuckoocache.h index d1de712024..15f6873961 100644 --- a/src/cuckoocache.h +++ b/src/cuckoocache.h @@ -242,14 +242,14 @@ private: */ inline std::array<uint32_t, 8> compute_hashes(const Element& e) const { - return {{(uint32_t)((hash_function.template operator()<0>(e) * (uint64_t)size) >> 32), - (uint32_t)((hash_function.template operator()<1>(e) * (uint64_t)size) >> 32), - (uint32_t)((hash_function.template operator()<2>(e) * (uint64_t)size) >> 32), - (uint32_t)((hash_function.template operator()<3>(e) * (uint64_t)size) >> 32), - (uint32_t)((hash_function.template operator()<4>(e) * (uint64_t)size) >> 32), - (uint32_t)((hash_function.template operator()<5>(e) * (uint64_t)size) >> 32), - (uint32_t)((hash_function.template operator()<6>(e) * (uint64_t)size) >> 32), - (uint32_t)((hash_function.template operator()<7>(e) * (uint64_t)size) >> 32)}}; + return {{(uint32_t)(((uint64_t)hash_function.template operator()<0>(e) * (uint64_t)size) >> 32), + (uint32_t)(((uint64_t)hash_function.template operator()<1>(e) * (uint64_t)size) >> 32), + (uint32_t)(((uint64_t)hash_function.template operator()<2>(e) * (uint64_t)size) >> 32), + (uint32_t)(((uint64_t)hash_function.template operator()<3>(e) * (uint64_t)size) >> 32), + (uint32_t)(((uint64_t)hash_function.template operator()<4>(e) * (uint64_t)size) >> 32), + (uint32_t)(((uint64_t)hash_function.template operator()<5>(e) * (uint64_t)size) >> 32), + (uint32_t)(((uint64_t)hash_function.template operator()<6>(e) * (uint64_t)size) >> 32), + (uint32_t)(((uint64_t)hash_function.template operator()<7>(e) * (uint64_t)size) >> 32)}}; } /* end |