[Issue 18412] New: [REG2.077.0] immutable array in library becomes null when referenced in static constructor

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18412

          Issue ID: 18412
           Summary: [REG2.077.0] immutable array in library becomes null
                    when referenced in static constructor
           Product: D
           Version: D2
          Hardware: x86
                OS: Windows
            Status: NEW
          Keywords: wrong-code
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: ag0aep6g at gmail.com

Spin-off from issue 18403.

m1.d:
----
import m2: f;
void main() { f(); }
----

m2.d:
----
static this()
{
    auto k = keywords;
}

immutable int[] keywords = [42];

void f()
{
    assert(keywords.ptr !is null); /* fails; should pass */
}
----

Compile and run (Windows via Wine, DMD32 D Compiler v2.077.0):
----
dmd -lib m2.d
dmd m1.d m2.lib
./m1.exe
----

Works with 2.076.1. Works on Linux. Works when the array is mutable. Works when
the array is declared before the static constructor.

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