https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107081
Bug ID: 107081
Summary: ctime fct used twice in printf
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: francois.hebert001 at videotron dot ca
Target Milestone: ---
If I use twice the ctime fct in the same printf, only the first value is print
twice.
If I use two printf both val;ue are printed correctly :
...
time_t now,now_beg,now_fin;
...
printf("Beginning time ->%s Finishing time>%s\n",ctime(&now_beg),
ctime(&now_fin));
printf("Beginning time->%s\n",ctime(&now_beg));
printf("Finishing time->%s\n",ctime(&now_fin));
The result is :
Sep 28 20:37:17 2022
Beginning time ->Wed Sep 28 20:37:15 2022
Finishing time->Wed Sep 28 20:37:15 2022 <- should be not 20:37:15 but
20:37:17
Beginning time->Wed Sep 28 20:37:15 2022
Finishing time->Wed Sep 28 20:37:17 2022
Here is the Linux and gcc versions and the complete source used
/*
gcc -o test_ctime test_ctime.c
./test_ctime
Fedora 36 astronomy 5.17.5-300
gcc --version
gcc (GCC) 12.0.1 20220413 (Red Hat 12.0.1-0)
Copyright © 2022 Free Software Foundation, Inc.
*/
#include <stdio.h>
#include <limits.h>
#include <time.h>
long cpt;
long j,limit;
time_t now,now_beg,now_fin;
/*******************************************************************************************
Main section
*******************************************************************************************/
int main()
{
cpt=0;
j=0;
/*limite=LONG_MAX;*/
limit=900000000;
printf("Limit->%d\n",limit);
time(&now_beg);
printf("Begining time -> %s\n",ctime(&now_beg));
for (cpt=0;cpt<limit;cpt++)
{
if (cpt % 100000000 == 0)
{
time(&now);
printf("%u now->%s\n",cpt,ctime(&now));
}
}
time(&now_fin);
printf("Beginning time ->%s Finishing time->%s\n",
ctime(&now_beg),ctime(&now_fin));
printf("Beginning time->%s\n",ctime(&now_beg));
printf("Finishing time->%s\n",ctime(&now_fin));
return 0;
} /* end main section */
