Alias parameter + AA + external module

[Dicebot]

== mod.d ==
void func!(alias arr)()
{
     arr["key"] = 43;
}

== test.d ==
import mod;

void main()
{
     auto arr = [ "key" : 42 ];
     func!(arr)();
}

== shell ==
$ rdmd test.d
.../test.o: In function 
`_D4test4mainFZv36__T4funcS24_D4test4mainFZv3arrHAyaiZ4funcMFZv':
test.d:(.text._D4test4mainFZv36__T4funcS24_D4test4mainFZv3arrHAyaiZ4funcMFZv+0x3e): 
undefined reference to `_D3mod7__arrayZ'
collect2: ld returned 1 exit status
--- errorlevel 1

This works if I move func to main module. Also works when passing 
integer variable as an alias param. Also works on x32 linux, but 
fails on x64.

What should I blame and search in bugzilla for? :) My code has 
used this idiom extensively and encountering this while checking 
x64 compatibility was an unpleasant surprise :(