Bug#811801: fldigi: FTBFS with GCC 6: error: reference is ambiguous
Package: fldigi
Version: 3.23.01-1
Severity: important
User: debian-gcc@lists.debian.org
Usertags: ftbfs-gcc-6 gcc-6-reference-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
...
> r.cxx
> g++ -DHAVE_CONFIG_H -I. -DBUILD_FLDIGI -DLOCALEDIR=\"/usr/share/locale\" -I. -I./include -I./irrxml -I./libtiniconv -I./fileselector -DPKGDATADIR=\"/usr/share/fldigi\" -I/usr/include/flxmlrpc -Wdate-time -D_FORTIFY_SOURCE=2 -pthread -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/freetype2 -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -fvisibility-inlines-hidden -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_THREAD_SAFE -D_REENTRANT -D_REENTRANT -I/usr/include/libpng12 -pipe -Wall -fexceptions -O2 -ffast-math -finline-functions -DNDEBUG -I/usr/include/flxmlrpc -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -c -o fsq/fldigi-fsq.o `test -f 'fsq/fsq.cxx' || echo './'`fsq/fsq.cxx
> fsq/fsq.cxx: In member function 'virtual int fsq::rx_process(const double*, int)':
> fsq/fsq.cxx:1166:34: error: lvalue required as left operand of assignment
> rx_stream[i] * a_blackman[i];
> ^
>
> fsq/fsq.cxx: In function 'void fsq_repeat_last_command()':
> fsq/fsq.cxx:1411:39: error: reference to 'next' is ambiguous
> fsq_tx_text->addstr(sz2utf8(commands[next].c_str()));
> ^~~~
>
> fsq/fsq.cxx:1394:15: note: candidates are: size_t next
> static size_t next = 0;
> ^~~~
>
> In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0,
> from /usr/include/c++/6/bits/char_traits.h:39,
> from /usr/include/c++/6/ios:40,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iostream:39,
> from fsq/fsq.cxx:26:
> /usr/include/c++/6/bits/stl_iterator_base_funcs.h:205:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
> next(_ForwardIterator __x, typename
> ^~~~
>
> fsq/fsq.cxx:1412:2: error: reference to 'next' is ambiguous
> next++;
> ^~~~
>
> fsq/fsq.cxx:1394:15: note: candidates are: size_t next
> static size_t next = 0;
> ^~~~
>
> In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0,
> from /usr/include/c++/6/bits/char_traits.h:39,
> from /usr/include/c++/6/ios:40,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iostream:39,
> from fsq/fsq.cxx:26:
> /usr/include/c++/6/bits/stl_iterator_base_funcs.h:205:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
> next(_ForwardIterator __x, typename
> ^~~~
>
> fsq/fsq.cxx:1413:6: error: reference to 'next' is ambiguous
> if (next == commands.size()) next = 0;
> ^~~~
>
> fsq/fsq.cxx:1394:15: note: candidates are: size_t next
> static size_t next = 0;
> ^~~~
>
> In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0,
> from /usr/include/c++/6/bits/char_traits.h:39,
> from /usr/include/c++/6/ios:40,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iostream:39,
> from fsq/fsq.cxx:26:
> /usr/include/c++/6/bits/stl_iterator_base_funcs.h:205:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
> next(_ForwardIterator __x, typename
> ^~~~
>
> fsq/fsq.cxx:1413:31: error: reference to 'next' is ambiguous
> if (next == commands.size()) next = 0;
> ^~~~
>
> fsq/fsq.cxx:1394:15: note: candidates are: size_t next
> static size_t next = 0;
> ^~~~
>
> In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0,
> from /usr/include/c++/6/bits/char_traits.h:39,
> from /usr/include/c++/6/ios:40,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iostream:39,
> from fsq/fsq.cxx:26:
> /usr/include/c++/6/bits/stl_iterator_base_funcs.h:205:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
> next(_ForwardIterator __x, typename
> ^~~~
>
> fsq/fsq.cxx: In function 'void try_transmit(void*)':
> fsq/fsq.cxx:1455:3: error: reference to 'next' is ambiguous
> next = 0;
> ^~~~
>
> fsq/fsq.cxx:1394:15: note: candidates are: size_t next
> static size_t next = 0;
> ^~~~
>
> In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0,
> from /usr/include/c++/6/bits/char_traits.h:39,
> from /usr/include/c++/6/ios:40,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iostream:39,
> from fsq/fsq.cxx:26:
> /usr/include/c++/6/bits/stl_iterator_base_funcs.h:205:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
> next(_ForwardIterator __x, typename
> ^~~~
>
> fsq/fsq.cxx: At global scope:
> fsq/fsq.cxx:1394:15: warning: 'next' defined but not used [-Wunused-variable]
> static size_t next = 0;
> ^~~~
>
> Makefile:4988: recipe for target 'fsq/fldigi-fsq.o' failed
> make[4]: *** [fsq/fldigi-fsq.o] Error 1
--
Martin Michlmayr
Linux for HPE Helion, Hewlett Packard Enterprise
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