listen: Fix overzealous GCC 7 compiler warnings.

make[2]: Entering directory '/home/ralf/src/ax25/ax25-apps/listen'
gcc -DHAVE_CONFIG_H -I. -I..     -g -O2 -Wall -MT listen.o -MD -MP -MF .deps/listen.Tpo -c -o listen.o listen.c
listen.c: In function ‘ts_format’:
listen.c:53:58: warning: ‘%06u’ directive output may be truncated writing between 6 and 10 bytes into a region of size between 0 and 7 [-Wformat-truncation=]
         (void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d.%06u",
                                                          ^~~~
listen.c:53:42: note: using the range [0, 4294967295] for directive argument
         (void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d.%06u",
                                          ^~~~~~~~~~~~~~~~~~~~~
listen.c:53:9: note: ‘snprintf’ output between 16 and 27 bytes into a destination of size 16
         (void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d.%06u",
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                sec / 3600, (sec % 3600) / 60, sec % 60, usec);
                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The value of the variables is such that there is no overflow possible
but GCC is not able to figure this out.  Change the code such that GCC
can figure out the value range thus getting us rid of the variables.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

0 files changed, 0 insertions, 0 deletions