On Tue, Aug 30, 2022 at 09:57:45PM +0200, Tim Lange wrote: > Hello, > > I was preparing a patch for GCC and used the unordered_map from the C++ > stdlib in my patch. Later on, I noticed that it is used nowhere else inside > GCC except for some files in the go frontend. > > I wondered, now that building GCC requires a C++11 host compiler, whether > there is a consensus on which data structure implementation is preferred. > Should I rather use a hash_map instead of an unordered_map or is it on my > side to decide which one I choose?
I think you're probably better off using a hash_map; std::unordered_map has efficiency issues as described in https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2028r0.pdf Marek
