[Issue 19927] New: D standard library not detected while

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19927

          Issue ID: 19927
           Summary: D standard library not detected while
           Product: D
           Version: D2
          Hardware: All
                OS: Windows
            Status: NEW
          Severity: major
          Priority: P1
         Component: visuald
          Assignee: nobody at puremagic.com
          Reporter: x13989 at 126.com

D Win32 project, VD 0.49.2, VS 16.1.1. 
If I select the Debug or Release (either x86 or x64) build configuration,
everything works properly. But if I switch the build configuration to Debug
LDC/Release LDC, the auto-completion and go-to-definition function of the
standard library won't work. It would say "No definition found for 'writeln'",
and there are nothing but keywords in the completion list. These issues would
no longer occur if I switch back to Debug/Release. I suspect that Visual D's
not identifying LDC's standard library files lead to this problem. Please fix
this!

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