maint: fix printf format for signed integers

With GCC 5 and the newly added warnings from gnulib, ensure the
correct signed integer is passed for the printf format,
to avoid -Werror=format= failures.

src/dd.c

@@ -1685,7 +1685,7 @@ skip_via_lseek (char const *filename, int fdesc, off_t offset, int whence)
         error (0, 0, _("warning: working around lseek kernel bug for file "
                        "(%s)\n  of mt_type=0x%0lx -- "
                        "see <sys/mtio.h> for the list of types"),
-               filename, s2.mt_type);
+               filename, s2.mt_type + 0Lu);
       errno = 0;
       new_position = -1;
     }

src/factor.c

@@ -2337,7 +2337,7 @@ print_uintmaxes (uintmax_t t1, uintmax_t t0)
       r = t1 % 1000000000;
       udiv_qrnnd (t0, r, r, t0, 1000000000);
       print_uintmaxes (q, t0);
-      printf ("%09u", (int) r);
+      printf ("%09u", (unsigned int) r);
     }
 }
 

src/kill.c

@@ -109,8 +109,8 @@ PID is an integer; if negative it identifies a process group.\n\
    maximum name width is NAME_WIDTH, and SIGNAME is the name to print.  */
 
 static void
-print_table_row (unsigned int num_width, int signum,
-                 unsigned int name_width, char const *signame)
+print_table_row (int num_width, int signum,
+                 int name_width, char const *signame)
 {
   char const *description = strsignal (signum);
   printf ("%*d %-*s %s\n", num_width, signum, name_width, signame,

src/make-prime-list.c

@@ -131,7 +131,7 @@ output_primes (const struct prime *primes, unsigned nprimes)
         abort ();
       printf ("P (%u, %u,\n   (", primes[i].p - p, d8);
       print_wide_uint (primes[i].pinv, 0, wide_uint_bits);
-      printf ("),\n   UINTMAX_MAX / %d)\n", primes[i].p);
+      printf ("),\n   UINTMAX_MAX / %u)\n", primes[i].p);
       p = primes[i].p;
     }
 

src/numfmt.c

@@ -729,7 +729,7 @@ double_to_human (long double val, int precision,
   /* Normalize val to scale. */
   unsigned int power = 0;
   val = expld (val, scale_base, &power);
-  devmsg ("  scaled value to %Lf * %0.f ^ %d\n", val, scale_base, power);
+  devmsg ("  scaled value to %Lf * %0.f ^ %u\n", val, scale_base, power);
 
   /* Perform rounding. */
   int ten_or_less = 0;
@@ -757,7 +757,7 @@ double_to_human (long double val, int precision,
   int show_decimal_point = (val != 0) && (absld (val) < 10) && (power > 0);
   /* && (absld (val) > simple_round_floor (val))) */
 
-  devmsg ("  after rounding, value=%Lf * %0.f ^ %d\n", val, scale_base, power);
+  devmsg ("  after rounding, value=%Lf * %0.f ^ %u\n", val, scale_base, power);
 
   stpcpy (pfmt, show_decimal_point ? ".1Lf%s" : ".0Lf%s");
 

src/split.c

@@ -521,7 +521,7 @@ closeout (FILE *fp, int fd, pid_t pid, char const *name)
         {
           /* shouldn't happen.  */
           error (EXIT_FAILURE, 0,
-                 _("unknown status from command (0x%X)"), wstatus);
+                 _("unknown status from command (0x%X)"), wstatus + 0u);
         }
     }
 }

src/timeout.c

@@ -492,7 +492,7 @@ main (int argc, char **argv)
           else
             {
               /* shouldn't happen.  */
-              error (0, 0, _("unknown status from command (0x%X)"), status);
+              error (0, 0, _("unknown status from command (%d)"), status);
               status = EXIT_FAILURE;
             }
         }