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@@ -402,9 +402,14 @@ uint32_t _upb_Hash(const void* p, size_t n, uint64_t seed) {
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return Wyhash(p, n, seed, kWyhashSalt);
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}
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// Returns a seed for upb's hash function. For now this is just a hard-coded
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// constant, but we are going to randomize it soon.
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static uint64_t _upb_Seed(void) { return 0x69835f69597ec1cc; }
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static const void* const _upb_seed;
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// Returns a random seed for upb's hash function. This does not provide
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// high-quality randomness, but it should be enough to prevent unit tests from
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// relying on a deterministic map ordering. By returning the address of a
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// variable, we are able to get some randomness for free provided that ASLR is
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// enabled.
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static uint64_t _upb_Seed(void) { return (uint64_t)&_upb_seed; }
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static uint32_t _upb_Hash_NoSeed(const char* p, size_t n) {
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return _upb_Hash(p, n, _upb_Seed());
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