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Any custom allocator in Rust will use a lot of unsafe code.
by millstone 6y ago
Any custom allocator in Rust will use a lot of unsafe code.
- phkahler 6y agoI would hope all the analysis Rust does can inform the choice of built-in allocator so you dont need to roll your own. Also, any custom C++ allocator is going to contain a bunch of unsafe code too.
- millstone 6y agoI'm not sure what you mean by "all the analysis"; by default Rust just calls malloc. It's true that a C++ custom allocator will have lots of "unsafe" code, but this is really where C++ shines. The tooling is more complete, the aliasing rules are better documented and understood, the language fights you less, the stdlib has explicit support, it is easier to control the codegen. Rust cannot bring its strengths to bear on this sort of problem.