cross module inlining fails when code contains switch with string argument and at least 7 cases

[KytoDragon]

The following code

int main(string[] a) {
    switch (a[0]) {
        case "one":
            return 1;
        case "two":
            return 2;
        case "three":
            return 3;
        case "four":
            return 4;
        case "five":
            return 5;
        case "six":
            return 6;
        case "seven":
            return 7;
        default:
            return 0;
    }
}

when compiled with these options:

ldc2 -enable-inlining --enable-cross-module-inlining=true -Isource source\main.d -ofd-test.exe -link-internally

results in the following error:

lld-link: error: undefined symbol: _D4core8internal7switch___T8__switchTyaVxAyaa3_6f6e65VxQoa3_736978VxQBba3_74776fVxQBpa4_66697665VxQCfa4_666f7572VxQCva5_736576656eVxQDna5_7468726565ZQEsFNaNbNiNfMxQEsZ5casesyG7Aa
>>> referenced by d-test.obj:(_D4core8internal7switch___T8__switchTyaVxAyaa3_6f6e65VxQoa3_736978VxQBba3_74776fVxQBpa4_66697665VxQCfa4_666f7572VxQCva5_736576656eVxQDna5_7468726565ZQEsFNaNbNiNfMxQEsZi)
Error: linking with LLD failed

The identifier in question is defined in druntime here.
Tested on Windows 10 with LDC 1.40.0.

[JohanEngelen]

Can you help out and test with a small testcase whether cross-module inlining works for static variables inside the inlined function? Thanks