This is the mail archive of the
mailing list for the Cygwin project.
Re: Core dump calling strptime()
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: newlib at sources dot redhat dot com
- Cc: cygwin at cygwin dot com
- Date: Fri, 18 Nov 2005 11:53:07 +0100
- Subject: Re: Core dump calling strptime()
- References: <437D8A59.email@example.com>
- Reply-to: newlib at sources dot redhat dot com
On Nov 18 00:01, David Arnstein wrote:
> Here is a very short test program that causes a "core dump." Please
> compile it using the command
> gcc -Wall testspt.c -o testspt
> Run the resulting executable testspt.exe with no arguments. Core dump
> The attached file cygcheck.out is the output from the command
> cygcheck -s -v -r
> from the computer where I compiled and executed testspt.exe.
> In case anyone cares, I get this problem when I compile and use
> newsyslog in Cygwin. Newsyslog calls strptime() several times on the
> same message string, trying to find a parsing method that it recognizes.
> It is to be expected that strptime() will fail often, but it is NOT
> reasonable to core dump, in my opinion.
> File testspt.c:
> #include <time.h>
> int main (int argc, char* argv)
> char* retval;
> struct tm tms;
> char message =
> "INFO Nov 17 09:31:01 : Initializing tinyproxy ...";
> retval = strptime (message, "%c", &tms);
> return 0;
This is a newlib problem. I've redirected to the newlib mailing list
and set the reply-to accordingly.
Newlib's strptime function doesn't implement the 'c' and the 'Z'(*)
format specifiers. If it encounters one of the non-implemented format
specifiers it calls the abort() function which then results in the core
I guess patches are thoughtfully considered on the newlib list ;-)
(*) Z? I don't see this format specifier defined on Linux, nor in the
SUSv3 man pages. What's its job?
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat, Inc.
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html