From: "Lavrentiev, Anton (NIH/NLM/NCBI) [C]" <lavr@ncbi.nlm.nih.gov>
To: "'cygwin@cygwin.com'" <cygwin@cygwin.com>
Subject: FPE in localtime.cc
Date: Mon, 09 Jul 2018 15:47:00 -0000 [thread overview]
Message-ID: <CY4PR09MB1302CB30716988BB7BB61EF3A5440@CY4PR09MB1302.namprd09.prod.outlook.com> (raw)
Hello,
the following sample coredumps with FPE at localhost.cc:1962 with the latest snapshot (6/29/2018):
#define _GNU_SOURCE
#include <fenv.h>
#include <time.h>
#include <stdio.h>
static time_t s_Time;
static void fun(void)
{
char buf[40];
strftime(buf, sizeof(buf), "%m/%d/%y %H:%M:%S", localtime(&s_Time));
printf("%s\n", buf);
}
int main()
{
feenableexcept(FE_ALL_EXCEPT);
time(&s_Time);
fun();
}
$ cat a.exe.stackdump
Exception: STATUS_FLOAT_INEXACT_RESULT at rip=001800BBA24
rax=000000000000016D rbx=000000005B43498E rcx=00000000000001EC
rdx=1845C8A0CE512957 rsi=0000000051EB851F rdi=2CC3D8D4A245F203
r8 =0000000000F92B80 r9 =00000000FFFFFFED r10=00000000000007E2
r11=000000000000000C r12=00000000FFFFFFFF r13=0000000080000000
r14=00000000000000BD r15=00000000000007E2
rbp=000000007FFFFFFF rsp=00000000FFFFCA70
program=C:\Cygwin64\...\a.exe, pid 14232, thread main
cs=0033 ds=002B es=002B fs=0053 gs=002B ss=002B
Removing the first line of the main() function lets the program run successfully.
The same code runs fine unmodified on Linux.
$ gcc -Wall sample.c -lm
$ ./a.out
07/09/18 11:44:26
Any ideas?
Thanks,
Anton Lavrentiev
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next reply other threads:[~2018-07-09 15:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-09 15:47 Lavrentiev, Anton (NIH/NLM/NCBI) [C] [this message]
2018-07-09 16:49 ` Corinna Vinschen
2018-07-09 17:17 ` Brian Inglis
2018-07-09 19:07 ` Corinna Vinschen
2018-07-10 13:35 ` cyg Simple
2018-07-11 1:30 ` Brian Inglis
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