Compilation failure when using the Visual Studio 2017 15.8

[dirkvdb]

The latest release of Visual Studio fails to compile sqlpp11
The problem seems to be in the alias provider:

------ Build started: Project: repro, Configuration: Debug x64 ------
geodb.cpp
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(99): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(99): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[2]'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(99): note: Reason: cannot convert from 'int' to 'const char [2]'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(99): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(99): note: see reference to alias template instantiation 'make_char_sequence<2,0>' being compiled
c:\build\date\include\date\date.h(150): note: see reference to class template instantiation 'std::chrono::duration<int,std::ratio<86400,1>>' being compiled
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(99): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2762: 'sqlpp::make_char_sequence_impl': invalid expression as a template argument for 's'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(58): note: see declaration of 'sqlpp::make_char_sequence_impl'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[2]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [2]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2973: 'sqlpp::make_char_sequence_impl<N,s,sqlpp::detail::index_sequence<i...>>': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(61): note: see declaration of 'sqlpp::make_char_sequence_impl<N,s,sqlpp::detail::index_sequence<i...>>'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(63): error C2109: subscript requires array or pointer type
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(100): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(101): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(102): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(103): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(104): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(105): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(106): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(107): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(108): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(109): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(110): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(111): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(112): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(113): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(114): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(115): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(116): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(117): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(118): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(119): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(120): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(121): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(122): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(123): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(124): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(125): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(125): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[5]'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(125): note: Reason: cannot convert from 'int' to 'const char [5]'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(125): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(125): note: see reference to alias template instantiation 'make_char_sequence<5,0>' being compiled
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(125): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[5]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [5]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(126): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(126): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[6]'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(126): note: Reason: cannot convert from 'int' to 'const char [6]'
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(126): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(126): note: see reference to alias template instantiation 'make_char_sequence<6,0>' being compiled
c:\build\sqlpp11\include\sqlpp11\alias_provider.h(126): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[6]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [6]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\data_types\text\concat.h(47): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\data_types\text\concat.h(47): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[8]'
c:\build\sqlpp11\include\sqlpp11\data_types\text\concat.h(47): note: Reason: cannot convert from 'int' to 'const char [8]'
c:\build\sqlpp11\include\sqlpp11\data_types\text\concat.h(47): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\data_types\text\concat.h(47): note: see reference to alias template instantiation 'make_char_sequence<8,0>' being compiled
c:\build\sqlpp11\include\sqlpp11\data_types\text\concat.h(47): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[8]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [8]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(20): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(20): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[7]'
c:\build\geoscheme.h(20): note: Reason: cannot convert from 'int' to 'const char [7]'
c:\build\geoscheme.h(20): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(20): note: see reference to alias template instantiation 'make_char_sequence<7,0>' being compiled
c:\build\geoscheme.h(20): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[7]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [7]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(36): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(52): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(73): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(73): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[31]'
c:\build\geoscheme.h(73): note: Reason: cannot convert from 'int' to 'const char [31]'
c:\build\geoscheme.h(73): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(73): note: see reference to alias template instantiation 'make_char_sequence<31,0>' being compiled
c:\build\geoscheme.h(73): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[31]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [31]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(90): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(106): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(122): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(143): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(143): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[36]'
c:\build\geoscheme.h(143): note: Reason: cannot convert from 'int' to 'const char [36]'
c:\build\geoscheme.h(143): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(143): note: see reference to alias template instantiation 'make_char_sequence<36,0>' being compiled
c:\build\geoscheme.h(143): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[36]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [36]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(160): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(176): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(192): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(213): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(213): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[22]'
c:\build\geoscheme.h(213): note: Reason: cannot convert from 'int' to 'const char [22]'
c:\build\geoscheme.h(213): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(213): note: see reference to alias template instantiation 'make_char_sequence<22,0>' being compiled
c:\build\geoscheme.h(213): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[22]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [22]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(230): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(246): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(262): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(283): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\geoscheme.h(283): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[27]'
c:\build\geoscheme.h(283): note: Reason: cannot convert from 'int' to 'const char [27]'
c:\build\geoscheme.h(283): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\geoscheme.h(283): note: see reference to alias template instantiation 'make_char_sequence<27,0>' being compiled
c:\build\geoscheme.h(283): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[27]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [27]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\aggregate_functions\count.h(41): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\aggregate_functions\min.h(40): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\aggregate_functions\max.h(40): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\aggregate_functions\avg.h(40): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\aggregate_functions\sum.h(40): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\trim.h(42): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\in.h(43): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\in.h(43): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[4]'
c:\build\sqlpp11\include\sqlpp11\in.h(43): note: Reason: cannot convert from 'int' to 'const char [4]'
c:\build\sqlpp11\include\sqlpp11\in.h(43): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\in.h(43): note: see reference to alias template instantiation 'make_char_sequence<4,0>' being compiled
c:\build\sqlpp11\include\sqlpp11\in.h(43): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[4]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [4]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\not_in.h(43): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\is_null.h(42): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\is_null.h(42): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[9]'
c:\build\sqlpp11\include\sqlpp11\is_null.h(42): note: Reason: cannot convert from 'int' to 'const char [9]'
c:\build\sqlpp11\include\sqlpp11\is_null.h(42): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\is_null.h(42): note: see reference to alias template instantiation 'make_char_sequence<9,0>' being compiled
c:\build\sqlpp11\include\sqlpp11\is_null.h(42): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[9]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [9]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\is_not_null.h(42): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\is_not_null.h(42): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[13]'
c:\build\sqlpp11\include\sqlpp11\is_not_null.h(42): note: Reason: cannot convert from 'int' to 'const char [13]'
c:\build\sqlpp11\include\sqlpp11\is_not_null.h(42): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\is_not_null.h(42): note: see reference to alias template instantiation 'make_char_sequence<13,0>' being compiled
c:\build\sqlpp11\include\sqlpp11\is_not_null.h(42): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[13]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [13]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\exists.h(40): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(45): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(45): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[14]'
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(45): note: Reason: cannot convert from 'int' to 'const char [14]'
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(45): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(45): note: see reference to alias template instantiation 'make_char_sequence<14,0>' being compiled
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(45): error C2973: 'sqlpp::make_char_sequence': invalid template argument 'int'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[14]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: Reason: cannot convert from 'int' to 'const char [14]'
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: There are no conversions to array types, although there are conversions to references or pointers to arrays
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(62): error C2975: 'sqlpp::make_char_sequence': invalid template argument for 'Input', expected compile-time constant expression
c:\build\sqlpp11\include\sqlpp11\char_sequence.h(68): note: see declaration of 'sqlpp::make_char_sequence'
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(62): error C2440: 'specialization': cannot convert from 'int' to 'const char (&)[15]'
c:\build\sqlpp11\include\sqlpp11\verbatim_table.h(62): fatal error C1003: error count exceeds 100; stopping compilation
Done building project "repro.vcxproj" -- FAILED.
------ Skipped Build: Project: ALL_BUILD, Configuration: Debug x64 ------
Project not selected to build for this solution configuration 
========== Build: 0 succeeded, 1 failed, 1 up-to-date, 1 skipped ==========

Is this a compiler issue or something that needs to be fixed in the library?

[egorpugin]

https://developercommunity.visualstudio.com/content/problem/310933/clexe-vs158-c-regression-with-templates.html

One solution is in the ticket, but I use another one.

1. Replace in include/sqlpp11/char_sequence.h all Input with s.
2. Replace in include/sqlpp11/char_sequence.h (&s)[N] with *s.

s/Input/s/g
s/\(&s\)\[N\]/*s/g

[dirkvdb]

Thanks for the info. It solves the compilation errors.
But as soon as you use prepared statements it results in internal compiler errors.

I reported this issue a few months ago: https://developercommunity.visualstudio.com/content/problem/256471/internal-compiler-error-in-vs157.html

It was supposed to be fixed in the 15.8 release...

[juandent]

The problem persists in VS v 15.9.4... any solution to it? --- it does seem to be very much concentrated in char_sequence.h

[RavenX8]

The only solution is to wait for the VS team to actually release the fix, which they have yet to do. as @dirkvdb posted the link to the issue report, it's still pending release and I have been asking on the thread when it will be release with no answer.

EDIT: The only other thing you could do is install VS v15.6 and use that instead of the latest

[rbock]

My understanding (I have no Windows myself and rely on Appveyor) is that this is fixed.
Closing.
Please open a new ticket, if you are still experiencing compilation issues with current master and current Visual Studio.