https://issues.dlang.org/show_bug.cgi?id=24364

          Issue ID: 24364
           Summary: Compilation failure when std.format and ctRegex used
                    in proximity
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: ofsfmq+2y1kh9wla11eg@grr.la

The following minimal example fails to compile starting with dmd 2.099:

import std.format;
import std.regex;
void main() {
    string ss = format("", "");
    auto r = ctRegex!"";
}

with the error:

error LNK2019: unresolved external symbol
_D4core8internal7switch___T14__switch_errorZQrFNaNbNiNfAyamZv referenced in
function
_D3std3uni__T16UnicodeSetParserTSQBf5regex8internal6parser__T6ParserTAyaTSQCuQBpQBmQBg7CodeGenZQBiZQDi13parseCharTermMFNfZSQEr8typecons__T5TupleTSQFoQFn__T13InversionListTSQGoQGn8GcPolicyZQBhTEQHjQHi__TQHhTQGsZQHp8OperatorZQDh

--