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...anyway. Another attached patch implements llvm::sys::Process::GetRandomNumber() on Windows. (There's already a Unix implementation.) This function could be useful for implementing the missing random per-execution seed functionality. (Though it might take a little care to deal with Process::GetRandomNumberSeed potentially calling back into hash_combine on Unix.) In a little experiment I made, changing the seed per execution seemed to lead to test suite errors for clang's PCH support and other components. - Stephan -------------- next part --------------

Hi, Currently the hashing implementation in ADT/Hashing.h produces hash values on 32-bit platforms that differ from the lower 32-bits of the hash values produced on 64-bit platforms. It seems the only reason for this difference is that the uint64_t integer seed is truncated to size_t. Since the usage of uint64_t and size_t as types for seed values in the implementation is somewhat