Red Hat Bugzilla – Bug 1293086
fatal error: template instantiation depth exceeds maximum
Last modified: 2016-12-20 12:11:43 EST
Created attachment 1107851 [details]
short C++ program
Description of problem:
$ g++ -std=c++14 -o x x.cpp
In file included from x.cpp:3:0:
/usr/include/c++/5.3.1/functional: In substitution of ‘template<class _Functor, class> std::function<_Res(_ArgTypes ...)>::function(_Functor) [with _Functor = std::function<void(Foo)>; <template-parameter-1-2> = <missing>]’:
/usr/include/c++/5.3.1/functional:1981:45: recursively required by substitution of ‘template<class _Functor, class> std::function<_Res(_ArgTypes ...)>::function(_Functor) [with _Functor = std::function<void(Foo)>; <template-parameter-1-2> = <missing>]’
/usr/include/c++/5.3.1/functional:1981:45: required by substitution of ‘template<class _Functor, class> std::function<_Res(_ArgTypes ...)>::function(_Functor) [with _Functor = std::function<void(Foo)>; <template-parameter-1-2> = <missing>]’
x.cpp:10:22: required from here
/usr/include/c++/5.3.1/functional:1981:69: fatal error: template instantiation depth exceeds maximum of 900 (use -ftemplate-depth= to increase the maximum)
using _Invoke = decltype(__callable_functor(std::declval<_Functor&>())
But compiles fine with clang (3.7.0), and with MSVC++ (19.00.23602.0(x86))
Should this compile?
Version-Release number of selected component (if applicable):
g++ (GCC) 5.3.1 20151207 (Red Hat 5.3.1-2)
Steps to Reproduce:
This should compile, and did compile with GCC 5.1
I've reported it upstream as https://gcc.gnu.org/PR69005
This was reported upstream again as https://gcc.gnu.org/PR69222 and I've fixed it in gcc-5-branch at https://gcc.gnu.org/r232274
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