https://issues.dlang.org/show_bug.cgi?id=18979

          Issue ID: 18979
           Summary: Template constructor bypasses private
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: atila.neves@gmail.com

The following compiles but shouldn't:

foo.d:
struct Foo {
    private this(A)(A arg) { }
}

bar.d:
import foo;
void func() {
    auto f = Foo(42);
}

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