<br><br><div class="gmail_quote">On Sun, Nov 16, 2008 at 11:28 AM, Ted Kremenek <span dir="ltr"><<a href="mailto:kremenek@apple.com">kremenek@apple.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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On Nov 15, 2008, at 5:55 AM, Zhongxing Xu wrote:<br>
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One side problem is that I cannot make the MemRegion* in the ImmutableList const. If I did that, I would get compile error, related to FoldingSet Profile() overloading.<br>
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It seems that ImmutableList cannot take a const type as template parameter, otherwise the two Profile functions in the partial specialization of FoldingSetTrait would have the same signature. (FoldingSet.h:444, 447).<br>
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Could we provide a partial specialization of FoldingSetTrait just for ImmutableList? Or, does (something like) this work (i.e., add another partial specialization for const types):<br>
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template<typename const T> struct FoldingSetTrait<const T*> {<br>
static inline void Profile(const T* X, FoldingSetNodeID& ID) {<br>
ID.AddPointer(X);<br>
}<br>
};<br>
</blockquote></div><br>Yeah, this works! Thanks. Incidentally, do you think the old problem is caused by a g++ bug, because, at FoldingSet.h:234, the parameter for Add() already contains 'const', T should not contain 'const' when being instantiated.<br>