Size of size_t

[ot2t7]

Hey,
When I compile a function with mlua it generates bytecode where the size of size_t is 8 bytes instead of the default 4 bytes. This is probably the intended behavior but I'm curious why the mlua dev has set it up like this. Also, is there any way I can change this?

[ot2t7]

mlua import: mlua = { version = "0.8", features = ["lua51", "vendored"] }
my rustc version: rustc 1.61.0 (fe5b13d68 2022-05-18)
my cargo version: cargo 1.61.0 (a028ae4 2022-04-29)

[ot2t7]

After further research, I've found that luac5.1 also generates bytecode where the size of size_t is 8 bytes. It seems because I'm on a 64 bit system it's making size_t be 64 bits? I guess that makes sense, I'll mark this discussion as answered.

[khvzak]

sizeof(size_t) is 8 bytes on x64, it's easy to proof:

#include <stdio.h>

int main() {
    printf("%lu\n", sizeof(size_t));
}

prints 8