[Issue 22320] New: dmd test does not run again after modifying C++ file

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22320

          Issue ID: 22320
           Summary: dmd test does not run again after modifying C++ file
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: tim.dlang at t-online.de

I am running a specific test from the dmd test suite with the following
command:
rdmd test/run.d --environment runnable_cxx/cppa.d

If I modify runnable_cxx/cppa.d and run the command again, then the test runs
again, too.
If I modify only test/runnable_cxx/extra-files/cppb.cpp or
test/runnable_cxx/extra-files/cppb.h instead, then the test will not run again.

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