[Bug c++/53401] [C++11] internal compiler error: Segmentation fault on infinite argument deduction of constexpr templates

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53401

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Keywords|                            |diagnostic

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-05-20 19:15:39 UTC ---
t6.cc:11:16: error: template instantiation depth exceeds maximum of 900 (use
-ftemplate-depth= to increase the maximum) instantiating ‘struct index<-898>’
 constexpr auto recursive_impl(index<N>)       // Line 11
                ^
t6.cc:11:16:   recursively required by substitution of ‘template<int N>
constexpr decltype (recursive_impl(index<(N - 1)>())) recursive_impl(index<N>)
[with int N = 0]’
t6.cc:11:16:   required by substitution of ‘template<int N> constexpr decltype
(recursive_impl(index<(N - 1)>())) recursive_impl(index<N>) [with int N = 1]’
t6.cc:18:16:   required by substitution of ‘template<int N> constexpr decltype
(recursive_impl(index<N>())) recursive() [with int N = 1]’
t6.cc:26:16:   required from here

t6.cc:11:16: error: template instantiation depth exceeds maximum of 900 (use
-ftemplate-depth= to increase the maximum) instantiating ‘struct index<-899>’
t6.cc:11:16:   recursively required by substitution of ‘template<int N>
constexpr decltype (recursive_impl(index<(N - 1)>())) recursive_impl(index<N>)
[with int N = 0]’
t6.cc:11:16:   required by substitution of ‘template<int N> constexpr decltype
(recursive_impl(index<N>())) recursive() [with int N = 1]’
t6.cc:26:16:   required from here


And then an infinite loop.