[Issue 12658] New: Emit informative diagnostic when file with a platform-incompatible extension is found

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12658

          Issue ID: 12658
           Summary: Emit informative diagnostic when file with a
                    platform-incompatible extension is found
           Product: D
           Version: D2
          Hardware: All
                OS: Windows
            Status: NEW
          Keywords: diagnostic
          Severity: enhancement
          Priority: P1
         Component: DMD
          Assignee: andrej.mitrovich at gmail.com
          Reporter: andrej.mitrovich at gmail.com

E.g. see this user question here:
http://forum.dlang.org/thread/belugxxgahqvbvcislnj@forum.dlang.org

This is not the first time users are confused about platform differences. A
simple diagnostic can lead the users in the right way.

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