[Debian-zh-dev] Bug#811755: gemanx-gtk2: FTBFS with GCC 6: narrowing conversion

Martin Michlmayr tbm at hpe.com
Wed Jan 20 01:52:39 UTC 2016


Package: gemanx-gtk2
Version: 0.1.0.3-2
Severity: important
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-6 gcc-6-narrowing

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
...
> g++ -DHAVE_CONFIG_H -I. -I.. -I../src/core -I../src/view -pthread -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng12 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/freetype2 -I/usr/include/freetype2  -DLOCALEDIR=\"/usr/share/locale\" -DDATADIR=\"/usr/share\"    -g -O2 -fno-exceptions -fno-rtti -fvisibility=hidden -fvisibility-inlines-hidden -c -o telnetcon.o `test -f 'view/telnetcon.cpp' || echo './'`view/telnetcon.cpp
> view/telnetcon.cpp: In member function 'virtual bool CTelnetCon::Connect()':
> view/telnetcon.cpp:342:19: warning: 'GThread* g_thread_create(GThreadFunc, gpointer, gboolean, GError**)' is deprecated: Use 'g_thread_new' instead [-Wdeprecated-declarations]
>      m_DNSThread = g_thread_create( (GThreadFunc)&CTelnetCon::ProcessDNSQueue, NULL, true, NULL);
>                    ^~~~~~~~~~~~~~~
> 
> In file included from /usr/include/glib-2.0/glib.h:107:0,
>                  from /usr/include/glib-2.0/gobject/gbinding.h:28,
>                  from /usr/include/glib-2.0/glib-object.h:23,
>                  from /usr/include/glib-2.0/gio/gioenums.h:28,
>                  from /usr/include/glib-2.0/gio/giotypes.h:28,
>                  from /usr/include/glib-2.0/gio/gio.h:26,
>                  from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
>                  from /usr/include/gtk-2.0/gdk/gdk.h:32,
>                  from /usr/include/gtk-2.0/gtk/gtk.h:32,
>                  from view/telnetcon.h:31,
>                  from view/telnetcon.cpp:26:
> /usr/include/glib-2.0/glib/deprecated/gthread.h:104:10: note: declared here
>  GThread *g_thread_create       (GThreadFunc       func,
>           ^~~~~~~~~~~~~~~
> 
> view/telnetcon.cpp:342:95: warning: 'GThread* g_thread_create(GThreadFunc, gpointer, gboolean, GError**)' is deprecated: Use 'g_thread_new' instead [-Wdeprecated-declarations]
>      m_DNSThread = g_thread_create( (GThreadFunc)&CTelnetCon::ProcessDNSQueue, NULL, true, NULL);
>                                                                                                ^
> 
> In file included from /usr/include/glib-2.0/glib.h:107:0,
>                  from /usr/include/glib-2.0/gobject/gbinding.h:28,
>                  from /usr/include/glib-2.0/glib-object.h:23,
>                  from /usr/include/glib-2.0/gio/gioenums.h:28,
>                  from /usr/include/glib-2.0/gio/giotypes.h:28,
>                  from /usr/include/glib-2.0/gio/gio.h:26,
>                  from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
>                  from /usr/include/gtk-2.0/gdk/gdk.h:32,
>                  from /usr/include/gtk-2.0/gtk/gtk.h:32,
>                  from view/telnetcon.h:31,
>                  from view/telnetcon.cpp:26:
> /usr/include/glib-2.0/glib/deprecated/gthread.h:104:10: note: declared here
>  GThread *g_thread_create       (GThreadFunc       func,
>           ^~~~~~~~~~~~~~~
> 
> view/telnetcon.cpp: In member function 'bool CTelnetCon::OnRecv()':
> view/telnetcon.cpp:360:2: warning: 'GIOError g_io_channel_read(GIOChannel*, gchar*, gsize, gsize*)' is deprecated: Use 'g_io_channel_read_chars' instead [-Wdeprecated-declarations]
>   g_io_channel_read(m_IOChannel, (char*)m_pRecvBuf, (RECV_BUF_SIZE - 1), &rlen);
>   ^~~~~~~~~~~~~~~~~
> 
> In file included from /usr/include/glib-2.0/glib.h:54:0,
>                  from /usr/include/glib-2.0/gobject/gbinding.h:28,
>                  from /usr/include/glib-2.0/glib-object.h:23,
>                  from /usr/include/glib-2.0/gio/gioenums.h:28,
>                  from /usr/include/glib-2.0/gio/giotypes.h:28,
>                  from /usr/include/glib-2.0/gio/gio.h:26,
>                  from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
>                  from /usr/include/gtk-2.0/gdk/gdk.h:32,
>                  from /usr/include/gtk-2.0/gtk/gtk.h:32,
>                  from view/telnetcon.h:31,
>                  from view/telnetcon.cpp:26:
> /usr/include/glib-2.0/glib/giochannel.h:166:13: note: declared here
>  GIOError    g_io_channel_read   (GIOChannel    *channel,
>              ^~~~~~~~~~~~~~~~~
> 
> view/telnetcon.cpp:360:78: warning: 'GIOError g_io_channel_read(GIOChannel*, gchar*, gsize, gsize*)' is deprecated: Use 'g_io_channel_read_chars' instead [-Wdeprecated-declarations]
>   g_io_channel_read(m_IOChannel, (char*)m_pRecvBuf, (RECV_BUF_SIZE - 1), &rlen);
>                                                                               ^
> 
> In file included from /usr/include/glib-2.0/glib.h:54:0,
>                  from /usr/include/glib-2.0/gobject/gbinding.h:28,
>                  from /usr/include/glib-2.0/glib-object.h:23,
>                  from /usr/include/glib-2.0/gio/gioenums.h:28,
>                  from /usr/include/glib-2.0/gio/giotypes.h:28,
>                  from /usr/include/glib-2.0/gio/gio.h:26,
>                  from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
>                  from /usr/include/gtk-2.0/gdk/gdk.h:32,
>                  from /usr/include/gtk-2.0/gtk/gtk.h:32,
>                  from view/telnetcon.h:31,
>                  from view/telnetcon.cpp:26:
> /usr/include/glib-2.0/glib/giochannel.h:166:13: note: declared here
>  GIOError    g_io_channel_read   (GIOChannel    *channel,
>              ^~~~~~~~~~~~~~~~~
> 
> view/telnetcon.cpp: In member function 'void CTelnetCon::ParseTelnetCommand()':
> view/telnetcon.cpp:466:38: error: narrowing conversion of '255u' from 'unsigned char' to 'char' inside { } [-Wnarrowing]
>     char ret[]={TC_IAC,TC_DONT,*m_pBuf};
>                                       ^
> 
> view/telnetcon.cpp:466:38: error: narrowing conversion of '254u' from 'unsigned char' to 'char' inside { } [-Wnarrowing]
> view/telnetcon.cpp:466:31: warning: narrowing conversion of '*((CTelnetCon*)this)->CTelnetCon::m_pBuf' from 'unsigned char' to 'char' inside { } [-Wnarrowing]
>     char ret[]={TC_IAC,TC_DONT,*m_pBuf};
>                                ^~~~~~~
> 
> view/telnetcon.cpp:481:38: error: narrowing conversion of '255u' from 'unsigned char' to 'char' inside { } [-Wnarrowing]
>     char ret[]={TC_IAC,TC_WILL,*m_pBuf};
>                                       ^
> 
> view/telnetcon.cpp:481:38: error: narrowing conversion of '251u' from 'unsigned char' to 'char' inside { } [-Wnarrowing]
> view/telnetcon.cpp:481:31: warning: narrowing conversion of '*((CTelnetCon*)this)->CTelnetCon::m_pBuf' from 'unsigned char' to 'char' inside { } [-Wnarrowing]
>     char ret[]={TC_IAC,TC_WILL,*m_pBuf};
>                                ^~~~~~~
> 

-- 
Martin Michlmayr
Linux for HPE Helion, Hewlett Packard Enterprise



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