In file included from glib/glibconfig.h:9,
                 from glib/gtypes.h:32,
                 from glib/gquark.h:32,
                 from glib/gerror.h:28,
                 from glib/gconvert.h:32,
                 from glib/giochannel.h:32,
                 from glib/giochannel.c:37:
glib/giochannel.c: In function ‘g_io_channel_write_chars’:
glib/gmacros.h:351:26: error: comparison of integer expressions of different signedness: ‘gsize’ {aka ‘long unsigned int’} and ‘gssize’ {aka ‘long int’} [-Werror=sign-compare]
 #define MIN(a, b)  (((a) < (b)) ? (a) : (b))
                          ^
glib/giochannel.c:2285:31: note: in expansion of macro ‘MIN’
           gssize write_this = MIN (space_in_buf, count - wrote_bytes);
                               ^~~
glib/gmacros.h:351:41: error: operand of ?: changes signedness from ‘gssize’ {aka ‘long int’} to ‘gsize’ {aka ‘long unsigned int’} due to unsignedness of other operand [-Werror=sign-compare]
 #define MIN(a, b)  (((a) < (b)) ? (a) : (b))
                                         ^~~
glib/giochannel.c:2285:31: note: in expansion of macro ‘MIN’
           gssize write_this = MIN (space_in_buf, count - wrote_bytes);
                               ^~~
glib/giochannel.c:2415:41: error: comparison of integer expressions of different signedness: ‘gssize’ {aka ‘long int’} and ‘gsize’ {aka ‘long unsigned int’} [-Werror=sign-compare]
                         g_assert (count == from_buf_len - from_buf_old_len);
                                         ^~
glib/gmacros.h:455:25: note: in definition of macro ‘G_LIKELY’
 #define G_LIKELY(expr) (expr)
                         ^~~~
glib/giochannel.c:2415:25: note: in expansion of macro ‘g_assert’
                         g_assert (count == from_buf_len - from_buf_old_len);
                         ^~~~~~~~