Bug#811999: osmium: FTBFS with GCC 6: call overloaded is ambiguous

[Martin Michlmayr]

Package: osmium
Version: 0.0~20150428-7f23002-2
Severity: important
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-6 gcc-6-overloaded-ambiguous

This package fails to build with GCC 6.  GCC 6 has not been released
yet, but it's expected that GCC 6 will become the default compiler for
stretch.

Note that only the first error is reported; there might be more.  You
can find a snapshot of GCC 6 in experimental.  To build with GCC 6,
you can set CC=gcc-6 CXX=g++-6 explicitly.

You may be able to find out more about this issue at
https://gcc.gnu.org/gcc-6/changes.html

> sbuild (Debian sbuild) 0.67.0 (26 Dec 2015) on dl580gen9-02.hlinux
...
> ==========================
> c++ -I../include -I. -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall -Wextra -Wredundant-decls -Wdisabled-optimization -pedantic -Wctor-dtor-privacy -Wnon-virtual-dtor -Woverloaded-virtual -Wsign-promo -Wno-long-long -o tests test_main.o test_utils.o t/osmfile/test_read_and_write.cpp -I/usr/include -I/usr/include/gdal -L/usr/lib/x86_64-linux-gnu -lgeos-3.5.0 -L/usr/lib -lgdal -lboost_regex -lboost_iostreams -lboost_filesystem -lboost_system -DBOOST_TEST_DYN_LINK -Wl,-z,relro -lboost_unit_test_framework
> --------------------------
> t/osmfile/test_read_and_write.cpp: In member function 'void OSMFile_Output::write_to_xml_output_file::test_method()':
> t/osmfile/test_read_and_write.cpp:65:48: error: call of overloaded 'basic_ifstream(TempFileFixture&, const openmode&)' is ambiguous
>      std::ifstream in(test_osm, std::ios::binary);
>                                                 ^
> 
> In file included from t/osmfile/test_read_and_write.cpp:7:0:
> /usr/include/c++/6/fstream:511:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const string&, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::__cxx11::string = std::__cxx11::basic_string<char>; std::ios_base::openmode = std::_Ios_Openmode]
>        basic_ifstream(const std::string& __s,
>        ^~~~~~~~~~~~~~
> 
> /usr/include/c++/6/fstream:495:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::_Ios_Openmode]
>        basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in)
>        ^~~~~~~~~~~~~~
> 
> t/osmfile/test_read_and_write.cpp: In member function 'void OSMFile_Output::write_to_xml_gz_output_file::test_method()':
> t/osmfile/test_read_and_write.cpp:82:58: error: call of overloaded 'basic_ifstream(TempFileFixture&, const openmode&)' is ambiguous
>      std::ifstream inputfile(test_osm_gz, std::ios::binary);
>                                                           ^
> 
> In file included from t/osmfile/test_read_and_write.cpp:7:0:
> /usr/include/c++/6/fstream:511:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const string&, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::__cxx11::string = std::__cxx11::basic_string<char>; std::ios_base::openmode = std::_Ios_Openmode]
>        basic_ifstream(const std::string& __s,
>        ^~~~~~~~~~~~~~
> 
> /usr/include/c++/6/fstream:495:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::_Ios_Openmode]
>        basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in)
>        ^~~~~~~~~~~~~~
> 
> t/osmfile/test_read_and_write.cpp: In member function 'void OSMFile_Output::write_to_xml_bz2_output_file::test_method()':
> t/osmfile/test_read_and_write.cpp:102:59: error: call of overloaded 'basic_ifstream(TempFileFixture&, const openmode&)' is ambiguous
>      std::ifstream inputfile(test_osm_bz2, std::ios::binary);