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Duplicate class template instantiations via %template changes

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Named duplicate class template instantiations now issue a warning and are ignored.
Duplicate empty class template instantiations are quietly ignored.

The test cases are fixed for this new behaviour.

This commit is a pre-requisite for the near future so that the Python
builtin wrappers can correctly use the SwigType_namestr function without
generating duplicate symbol names.
This commit is contained in:
William S Fulton 2022-11-18 18:49:48 +00:00
commit 4729cf2b1f
16 changed files with 283 additions and 55 deletions
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34
Examples/test-suite/errors/cpp_template_class_repeat.i Normal file
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%module xxx
template<typename T> struct A {};
%template(Aint) A<int>;
%template(Aint2) A<int>; // Now ignored and issues a warning
template<typename T> struct B {};
%template() B<int>;
%template(Bint) B<int>; // OK
template<typename T> struct C {};
%template() C<int>;
%template() C<int>; // Quietly ignored now
%template(Cint) C<int>; // OK
template <typename T, typename U = short> struct D {};
%template(Dint) D<int>;
%template(Dintshort) D<int, short>;
template<typename T> struct E {};
%template(Eint) E<int>;
%template(Eint) E<int>; // Always has been ignored as a redefined identifier
template<typename T> struct F {};
%template(Fint) F<int>;
%template() F<int>; // Quietly ignored
%template() F<int>; // Quietly ignored
template<typename T> struct G {};
%template() G<int>;
%template() G<int>; // Quietly ignored
%template(Gint) G<int>;
%template() G<int>; // Quietly ignored