Assertion failure: `value.type != nullptr` involving @disabled and when

[Tetralux]

Windows x64, edbf2bf56f9c3cac0b996ca9f4fdccfe80637929 Odin version output: odin version dev-2021-09:edbf2bf5

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I have a debug printing function which is supposed to be a no-op, unless a -define is passed.

The following program works just fine - however, if you remove the when, the compiler crashes with an assertion failure. It also works fine if you -define:DEBUGIT=true.

$ odin build test.odin
src\llvm_backend_general.cpp(536): Assertion Failure: `value.type != nullptr`

package test

import "core:fmt"
import "core:strings"

@(disabled=!#config(DEBUGIT, false))
debug :: proc(format: string, args: ..any) {
    when #config(DEBUGIT, false) { // BUG: remove this when to cause the assertion
        b := strings.make_builder(context.temp_allocator)
        s := fmt.sbprintf(&b, format, ..args)
        fmt.println("[debug]", s)
    }
}


main :: proc() {
    debug("Hi %v", 123)
}

It works fine if you -define:DEBUGIT=true.

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