https://issues.dlang.org/show_bug.cgi?id=23689

          Issue ID: 23689
           Summary: ImportC: C tests in the testsuite are not valid C
           Product: D
           Version: D2
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: ibuclaw@gdcproject.org

This is a meta issue for others.

As per title, there seems to be no proper gauge as to whether a C program should genuinely be compilable, runnable, or not.

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