Fails to build with GCC 14: "adjtimex.c: In function 'valid_system_rate': adjtimex.c:1632:24: error: passing argument 1 of 'ctime' from incompatible pointer type [-Wincompatible-pointer-types]"

[ernsteiswuerfel]

At building 1.29 (Gentoo downstream bug report: https://bugs.gentoo.org/922489) and also at building from git-master with GCC 14 I get:

cc -g -O2 -Wall -c mat.c
cc -g -O2 -Wall -I. -DVERSION=\"1.29\" -o adjtimex  \
	 adjtimex.c mat.o -lm
adjtimex.c: In function 'cmos_read_time':
adjtimex.c:923:36: warning: format '%ld' expects argument of type 'long int', but argument 4 has type 'time_t' {aka 'long long int'} [-Wformat=]
  923 |     printf ("CMOS time %s (%s) = %ld\n", asctime (&tm),
      |                                  ~~^
      |                                    |
      |                                    long int
      |                                  %lld
......
  927 |             cmos_time);
      |             ~~~~~~~~~               
      |             |
      |             time_t {aka long long int}
adjtimex.c:959:40: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'time_t' {aka 'long long int'} [-Wformat=]
  959 |           printf("WARNING: CMOS time %ld differs from system time %ld by %3.2f hours\n",
      |                                      ~~^
      |                                        |
      |                                        long int
      |                                      %lld
  960 |                  cmos_time, now.tv_sec, (summertime_correction)/3600.);
      |                  ~~~~~~~~~              
      |                  |
      |                  time_t {aka long long int}
adjtimex.c:959:69: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'time_t' {aka 'long long int'} [-Wformat=]
  959 |           printf("WARNING: CMOS time %ld differs from system time %ld by %3.2f hours\n",
      |                                                                   ~~^
      |                                                                     |
      |                                                                     long int
      |                                                                   %lld
  960 |                  cmos_time, now.tv_sec, (summertime_correction)/3600.);
      |                             ~~~~~~~~~~                               
      |                                |
      |                                time_t {aka long long int}
adjtimex.c:729:7: warning: variable 'saveerr' set but not used [-Wunused-but-set-variable]
  729 |   int saveerr;
      |       ^~~~~~~
adjtimex.c: In function 'log_times':
adjtimex.c:1339:10: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
 1339 |   int n, ret;
      |          ^~~
adjtimex.c:1338:8: warning: variable 'ch' set but not used [-Wunused-but-set-variable]
 1338 |   char ch, buf[64], *s;
      |        ^~
adjtimex.c: In function 'valid_system_rate':
adjtimex.c:1632:24: error: passing argument 1 of 'ctime' from incompatible pointer type [-Wincompatible-pointer-types]
 1632 |                  ctime(&pca->ca_adj_time));
      |                        ^~~~~~~~~~~~~~~~~
      |                        |
      |                        long int *
In file included from adjtimex.c:33:
/usr/include/time.h:62:14: note: expected 'const time_t *' {aka 'const long long int *'} but argument is of type 'long int *'
   62 | char *ctime (const time_t *);
      |              ^~~~~~~~~~~~~~
make: *** [Makefile:38: adjtimex] Error 1

Building was done on my Talos II on my ppc32/musl chroot.

config.log attached.
config.log