https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78701
--- Comment #1 from Vincent <vince.rev at gmail dot com> ---
Addition:
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#include <iostream>
template <class T, T N = T(), bool B = N> T f(T x) {return T();}
int main(int argc, char* argv[]) {return f(42);}
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(without the N + 1)
returns:
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test_bug.cpp: In substitution of ‘template<class T, T N, bool B> T f(T) [with T
= int; T N = <missing>; bool B = <missing>]’:
test_bug.cpp:3:46: required from here
test_bug.cpp:2:40: internal compiler error: unexpected expression ‘N’ of kind
template_parm_index
template <class T, T N = T(), bool B = N> T f(T x) {return T();}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.
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