Build fails on debian:stable containers

[ErlendHaa]

Hi!

Ever since e3b4c22 fmtlib fails to build in debian:stable in our CI pipeline on CircleCi. Like your own ci pipeline, our travis builds still builds fine. However, the commit before (da8278e) builds fine on Debian:stable, so it doesn't seam too be caused by any changes in the build environment. Any suggestions for what might cause the build to fail?

git clone https://github.com/fmtlib/fmt.git
mkdir fmt/build
cd fmt/build
cmake -DFMT_TEST=OFF -DFMT_DOC=OFF ..
make

Cloning into 'fmt'...
remote: Enumerating objects: 66, done.        
remote: Counting objects: 100% (66/66), done.        
remote: Compressing objects: 100% (33/33), done.        
remote: Total 23329 (delta 34), reused 48 (delta 24), pack-reused 23263        
Receiving objects: 100% (23329/23329), 11.41 MiB | 29.73 MiB/s, done.
Resolving deltas: 100% (15822/15822), done.
-- CMake version: 3.13.4
-- The CXX compiler identification is GNU 8.3.0
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Version: 7.0.4
-- Build type: Release
-- CXX_STANDARD: 11
-- Performing Test has_std_11_flag
-- Performing Test has_std_11_flag - Success
-- Performing Test has_std_0x_flag
-- Performing Test has_std_0x_flag - Success
-- Performing Test SUPPORTS_USER_DEFINED_LITERALS
-- Performing Test SUPPORTS_USER_DEFINED_LITERALS - Success
-- Performing Test FMT_HAS_VARIANT
-- Performing Test FMT_HAS_VARIANT - Success
-- Required features: cxx_variadic_templates
-- Looking for strtod_l
-- Looking for strtod_l - found
-- Configuring done
-- Generating done
-- Build files have been written to: /home/circleci/project/fmt/build
Scanning dependencies of target fmt
[ 33%] Building CXX object CMakeFiles/fmt.dir/src/format.cc.o
In file included from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format-inl.h: In function ‘void fmt::v7::detail::format_error_code(fmt::v7::detail::buffer<char>&, int, fmt::v7::string_view)’:
/home/circleci/project/fmt/include/fmt/format-inl.h:148:39: error: no matching function for call to ‘format_to(fmt::v7::detail::buffer_appender<char>&, const char [5], fmt::v7::string_view&, const char [3])’
     format_to(it, "{}{}", message, SEP);
                                       ^
In file included from /home/circleci/project/fmt/include/fmt/format.h:44,
                 from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note: candidate: ‘template<class OutputIt, class S, class ... Args, class Char, typename std::enable_if<(fmt::v7::detail::is_output_iterator<OutputIt, Char>::value && fmt::v7::detail::is_string<S>::value), int>::type <anonymous> > OutputIt fmt::v7::format_to(OutputIt, const S&, Args&& ...)’
 inline OutputIt format_to(OutputIt out, const S& format_str, Args&&... args) {
                 ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note:   template argument deduction/substitution failed:
/home/circleci/project/fmt/include/fmt/core.h:277:62: error: no type named ‘type’ in ‘struct std::enable_if<false, int>’
 #define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
                                                              ^
/home/circleci/project/fmt/include/fmt/core.h:1993:11: note: in expansion of macro ‘FMT_ENABLE_IF’
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
           ^~~~~~~~~~~~~
In file included from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note: candidate: ‘template<class S, class ... Args, long unsigned int SIZE, class Char> typename fmt::v7::buffer_context<Char>::iterator fmt::v7::format_to(fmt::v7::basic_memory_buffer<Char, SIZE>&, const S&, Args&& ...)’
 inline typename buffer_context<Char>::iterator format_to(
                                                ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note:   template argument deduction/substitution failed:
In file included from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format-inl.h:148:39: note:   ‘fmt::v7::detail::buffer_appender<char>’ is not derived from ‘fmt::v7::basic_memory_buffer<Char, SIZE>’
     format_to(it, "{}{}", message, SEP);
                                       ^
/home/circleci/project/fmt/include/fmt/format-inl.h:149:46: error: no matching function for call to ‘format_to(fmt::v7::detail::buffer_appender<char>&, const char [5], const char [7], int&)’
   format_to(it, "{}{}", ERROR_STR, error_code);
                                              ^
In file included from /home/circleci/project/fmt/include/fmt/format.h:44,
                 from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note: candidate: ‘template<class OutputIt, class S, class ... Args, class Char, typename std::enable_if<(fmt::v7::detail::is_output_iterator<OutputIt, Char>::value && fmt::v7::detail::is_string<S>::value), int>::type <anonymous> > OutputIt fmt::v7::format_to(OutputIt, const S&, Args&& ...)’
 inline OutputIt format_to(OutputIt out, const S& format_str, Args&&... args) {
                 ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note:   template argument deduction/substitution failed:
/home/circleci/project/fmt/include/fmt/core.h:277:62: error: no type named ‘type’ in ‘struct std::enable_if<false, int>’
 #define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
                                                              ^
/home/circleci/project/fmt/include/fmt/core.h:1993:11: note: in expansion of macro ‘FMT_ENABLE_IF’
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
           ^~~~~~~~~~~~~
In file included from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note: candidate: ‘template<class S, class ... Args, long unsigned int SIZE, class Char> typename fmt::v7::buffer_context<Char>::iterator fmt::v7::format_to(fmt::v7::basic_memory_buffer<Char, SIZE>&, const S&, Args&& ...)’
 inline typename buffer_context<Char>::iterator format_to(
                                                ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note:   template argument deduction/substitution failed:
In file included from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format-inl.h:149:46: note:   ‘fmt::v7::detail::buffer_appender<char>’ is not derived from ‘fmt::v7::basic_memory_buffer<Char, SIZE>’
   format_to(it, "{}{}", ERROR_STR, error_code);
                                              ^
/home/circleci/project/fmt/include/fmt/format-inl.h: In member function ‘fmt::v7::basic_format_context<fmt::v7::detail::buffer_appender<char>, char>::iterator fmt::v7::formatter<fmt::v7::detail::bigint>::format(const fmt::v7::detail::bigint&, fmt::v7::format_context&)’:
/home/circleci/project/fmt/include/fmt/format-inl.h:2662:43: error: no matching function for call to ‘format_to(fmt::v7::detail::buffer_appender<char>&, const char [5], unsigned int&)’
         out = format_to(out, "{:x}", value);
                                           ^
In file included from /home/circleci/project/fmt/include/fmt/format.h:44,
                 from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note: candidate: ‘template<class OutputIt, class S, class ... Args, class Char, typename std::enable_if<(fmt::v7::detail::is_output_iterator<OutputIt, Char>::value && fmt::v7::detail::is_string<S>::value), int>::type <anonymous> > OutputIt fmt::v7::format_to(OutputIt, const S&, Args&& ...)’
 inline OutputIt format_to(OutputIt out, const S& format_str, Args&&... args) {
                 ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note:   template argument deduction/substitution failed:
/home/circleci/project/fmt/include/fmt/core.h:277:62: error: no type named ‘type’ in ‘struct std::enable_if<false, int>’
 #define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
                                                              ^
/home/circleci/project/fmt/include/fmt/core.h:1993:11: note: in expansion of macro ‘FMT_ENABLE_IF’
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
           ^~~~~~~~~~~~~
In file included from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note: candidate: ‘template<class S, class ... Args, long unsigned int SIZE, class Char> typename fmt::v7::buffer_context<Char>::iterator fmt::v7::format_to(fmt::v7::basic_memory_buffer<Char, SIZE>&, const S&, Args&& ...)’
 inline typename buffer_context<Char>::iterator format_to(
                                                ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note:   template argument deduction/substitution failed:
In file included from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format-inl.h:2662:43: note:   ‘fmt::v7::detail::buffer_appender<char>’ is not derived from ‘fmt::v7::basic_memory_buffer<Char, SIZE>’
         out = format_to(out, "{:x}", value);
                                           ^
/home/circleci/project/fmt/include/fmt/format-inl.h:2666:43: error: no matching function for call to ‘format_to(fmt::v7::detail::buffer_appender<char>&, const char [7], unsigned int&)’
       out = format_to(out, "{:08x}", value);
                                           ^
In file included from /home/circleci/project/fmt/include/fmt/format.h:44,
                 from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note: candidate: ‘template<class OutputIt, class S, class ... Args, class Char, typename std::enable_if<(fmt::v7::detail::is_output_iterator<OutputIt, Char>::value && fmt::v7::detail::is_string<S>::value), int>::type <anonymous> > OutputIt fmt::v7::format_to(OutputIt, const S&, Args&& ...)’
 inline OutputIt format_to(OutputIt out, const S& format_str, Args&&... args) {
                 ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note:   template argument deduction/substitution failed:
/home/circleci/project/fmt/include/fmt/core.h:277:62: error: no type named ‘type’ in ‘struct std::enable_if<false, int>’
 #define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
                                                              ^
/home/circleci/project/fmt/include/fmt/core.h:1993:11: note: in expansion of macro ‘FMT_ENABLE_IF’
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
           ^~~~~~~~~~~~~
In file included from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note: candidate: ‘template<class S, class ... Args, long unsigned int SIZE, class Char> typename fmt::v7::buffer_context<Char>::iterator fmt::v7::format_to(fmt::v7::basic_memory_buffer<Char, SIZE>&, const S&, Args&& ...)’
 inline typename buffer_context<Char>::iterator format_to(
                                                ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note:   template argument deduction/substitution failed:
In file included from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format-inl.h:2666:43: note:   ‘fmt::v7::detail::buffer_appender<char>’ is not derived from ‘fmt::v7::basic_memory_buffer<Char, SIZE>’
       out = format_to(out, "{:08x}", value);
                                           ^
/home/circleci/project/fmt/include/fmt/format-inl.h:2669:70: error: no matching function for call to ‘format_to(fmt::v7::detail::buffer_appender<char>&, const char [4], int)’
       out = format_to(out, "p{}", n.exp_ * detail::bigint::bigit_bits);
                                                                      ^
In file included from /home/circleci/project/fmt/include/fmt/format.h:44,
                 from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note: candidate: ‘template<class OutputIt, class S, class ... Args, class Char, typename std::enable_if<(fmt::v7::detail::is_output_iterator<OutputIt, Char>::value && fmt::v7::detail::is_string<S>::value), int>::type <anonymous> > OutputIt fmt::v7::format_to(OutputIt, const S&, Args&& ...)’
 inline OutputIt format_to(OutputIt out, const S& format_str, Args&&... args) {
                 ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note:   template argument deduction/substitution failed:
/home/circleci/project/fmt/include/fmt/core.h:277:62: error: no type named ‘type’ in ‘struct std::enable_if<false, int>’
 #define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
                                                              ^
/home/circleci/project/fmt/include/fmt/core.h:1993:11: note: in expansion of macro ‘FMT_ENABLE_IF’
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
           ^~~~~~~~~~~~~
In file included from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note: candidate: ‘template<class S, class ... Args, long unsigned int SIZE, class Char> typename fmt::v7::buffer_context<Char>::iterator fmt::v7::format_to(fmt::v7::basic_memory_buffer<Char, SIZE>&, const S&, Args&& ...)’
 inline typename buffer_context<Char>::iterator format_to(
                                                ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note:   template argument deduction/substitution failed:
In file included from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format-inl.h:2669:70: note:   ‘fmt::v7::detail::buffer_appender<char>’ is not derived from ‘fmt::v7::basic_memory_buffer<Char, SIZE>’
       out = format_to(out, "p{}", n.exp_ * detail::bigint::bigit_bits);
                                                                      ^
/home/circleci/project/fmt/include/fmt/format-inl.h: In function ‘void fmt::v7::format_system_error(fmt::v7::detail::buffer<char>&, int, fmt::v7::string_view)’:
/home/circleci/project/fmt/include/fmt/format-inl.h:2716:33: error: no matching function for call to ‘format_to(fmt::v7::detail::buffer_appender<char>, const char [7], fmt::v7::string_view&, char*&)’
                   system_message);
                                 ^
In file included from /home/circleci/project/fmt/include/fmt/format.h:44,
                 from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note: candidate: ‘template<class OutputIt, class S, class ... Args, class Char, typename std::enable_if<(fmt::v7::detail::is_output_iterator<OutputIt, Char>::value && fmt::v7::detail::is_string<S>::value), int>::type <anonymous> > OutputIt fmt::v7::format_to(OutputIt, const S&, Args&& ...)’
 inline OutputIt format_to(OutputIt out, const S& format_str, Args&&... args) {
                 ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/core.h:1995:17: note:   template argument deduction/substitution failed:
/home/circleci/project/fmt/include/fmt/core.h:277:62: error: no type named ‘type’ in ‘struct std::enable_if<false, int>’
 #define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
                                                              ^
/home/circleci/project/fmt/include/fmt/core.h:1993:11: note: in expansion of macro ‘FMT_ENABLE_IF’
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
           ^~~~~~~~~~~~~
In file included from /home/circleci/project/fmt/include/fmt/format-inl.h:28,
                 from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note: candidate: ‘template<class S, class ... Args, long unsigned int SIZE, class Char> typename fmt::v7::buffer_context<Char>::iterator fmt::v7::format_to(fmt::v7::basic_memory_buffer<Char, SIZE>&, const S&, Args&& ...)’
 inline typename buffer_context<Char>::iterator format_to(
                                                ^~~~~~~~~
/home/circleci/project/fmt/include/fmt/format.h:3822:48: note:   template argument deduction/substitution failed:
In file included from /home/circleci/project/fmt/src/format.cc:8:
/home/circleci/project/fmt/include/fmt/format-inl.h:2716:33: note:   ‘fmt::v7::detail::buffer_appender<char>’ is not derived from ‘fmt::v7::basic_memory_buffer<Char, SIZE>’
                   system_message);
                                 ^
make[2]: *** [CMakeFiles/fmt.dir/build.make:63: CMakeFiles/fmt.dir/src/format.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/fmt.dir/all] Error 2
make: *** [Makefile:152: all] Error 2

Exited with code exit status 2```

[moiwi]

I have exactly the same problem (with gcc version 8.1.0).

[vitaut]

This is a bug in gcc 8. Worked around in 8de9681, thanks for reporting.