[Issue 18490] New: dspec_tester fails

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18490

          Issue ID: 18490
           Summary: dspec_tester fails
           Product: D
           Version: D2
          Hardware: x86
                OS: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P1
         Component: tools
          Assignee: nobody at puremagic.com
          Reporter: timothee.cour2 at gmail.com

see https://github.com/dlang/dlang.org/pull/2169#pullrequestreview-96041881 for
context

segfault on:

+        $(SPEC_RUNNABLE_EXAMPLE_RUN
+        ---
+        size_t fun(T...)(T t, string file = __FILE__)
+        {
+            import std.stdio;
+            writeln(file, " ", t);
+            return T.length;
+        }
+        assert(fun(1, "foo") == 2);  // not 1 (IFTI)
+        assert(fun!int(1, "foo") == 1);  // IFTI
+        ---

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