A story about an unexpected ABI break

This is the story of an unexpected ABI break that I thought would be worth documenting. At Avalanche we use a small class wrapping 32bit hashes called CHashString, it is basically just a wrapper around uint32_t and one should be able to treat it as a uint32_t in code except for operations that do not make sense on a hash-value. Why would you want a class like this you might ask, well we use it for adding a const char* c_str()-function that can be used in logging and also we use it to add custom natvis-support in visual studio so that you can just hover a CHashString and have a lookup of the hash-value performed.

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