[Issue 6310] New: Missing "template instantiation" traceback when an error happens in the template parameter of an alias.

d-bugmail at puremagic.com d-bugmail at puremagic.com
Thu Jul 14 01:10:31 PDT 2011


http://d.puremagic.com/issues/show_bug.cgi?id=6310

           Summary: Missing "template instantiation" traceback when an
                    error happens in the template parameter of an alias.
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Mac OS X
            Status: NEW
          Keywords: diagnostic
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: kennytm at gmail.com


--- Comment #0 from kennytm at gmail.com 2011-07-14 01:05:17 PDT ---
(I believe there's a duplicate, but I can't find it.)

Test case
--------------------------------------
template RT(alias f) {
    alias int RT;
}
template F(T) {
    alias RT!(T.dsfsdf) X;  // line 5
}
pragma(msg, F!(int)); // line 7
--------------------------------------
x.d(5): Error: no property 'dsfsdf' for type 'int'
--------------------------------------

There should be another error

x.d(7): Error: template instance x.F!(int) error instantiating

Many Phobos template e.g. ForeachType suffer from this missing traceback. The
error doesn't happen in D1, apparently.

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