November 28, 2014
https://issues.dlang.org/show_bug.cgi?id=13786

          Issue ID: 13786
           Summary: Test coverage for dmd is inadequate
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: DMD
          Assignee: nobody@puremagic.com
          Reporter: bugzilla@digitalmars.com

https://dlang.dawg.eu/coverage/src/index.html

There's a lot of low-hanging fruit there that could improve coverage substantially. It's currently at 90%, we should be able to get it to 95% without much difficulty.

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