How to calculate the function address hash. FNV1a32 and FNV1a64 can't get the right hash

[wagshiwei]

FNV1a32("red::memory::DefaultAllocator::ReallocateAligned")
FNV1a64("red::memory::DefaultAllocator::ReallocateAligned")
Murmur3_32("red::memory::DefaultAllocator::ReallocateAligned")
can't get 1452677801

[alphanin9]

Adler32 of mangled name

[wagshiwei]

I use this Adler32 and this mangled to calculate, but I can not get the right hash, can you show the right Adler32.

//Test name
mangled::name< void(red::memory::Block )>([] { return "red::memory::DefaultAllocator::Free"; });  
?Free@DefaultAllocator@memory@red@@YAXUBlock@memory@red@@@Z

//result 2515670492
//right hash 859968306

[wopss]

We don't know the exact mangled names, so we can't say for sure what the correct one is, but the algorithm used is Adler32.

One thing I noticed in your test, is that it should be YIXU instead of YAXU, because of __fastcall convention.

[wagshiwei]

I get the right hash 859968306 from dump dll
?Free@DefaultAllocator@memory@red@@QEAAXAEAUBlock@23@@z

[wopss]

I don't know what you mean with the dump DLL. As far as I know there is no official source to know this info.

[wagshiwei]

I mean I find a way to get the right mangled name from dll, and get Adler32 hash with it.
Thanks for your reply