[Issue 24066] New: __traits(isAbstractClass) causes a segfault when passed an opaque class

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24066

          Issue ID: 24066
           Summary: __traits(isAbstractClass) causes a segfault when
                    passed an opaque class
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: ice
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: spoov0.707 at gmail.com

The following code causes a segfault since DMD 2.072.2, but produces the
correct result (false) up to DMD 2.071.2

class C;
pragma(msg, __traits(isAbstractClass, C));

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