Runtime crash when looping over polymorphic map that uses a struct as a key

[EeroMutka]

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The following code causes an access violation at second iteration of the for loop:

package main
import "core:fmt"

loop :: proc(m: map[$T]int) {
	for x, i in m {
		println(x)
	}
}

Key :: struct {
	a, b: int,
}

main :: proc() {
	foo: map[Key]int
	map_insert(&foo, Key{2, 5}, 1)
	map_insert(&foo, Key{3, 4}, 2)

	loop(foo)

	fmt.println("Hello")
}

Interestingly, changing the argument to m: $T/map[$K]int fixes the problem

Odin: dev-2022-04:d10d5471 OS: Windows 10 Home Basic (version: 21H2), build 19044.1586 CPU: AMD Ryzen 5 5600H with Radeon Graphics RAM: 16252 MiB

[z64]

This issue appears to be still reproducible on the latest Odin compiler, and the "workaround" of m: $T/map[$K]int still applies.