a strange segment fault about ltp-posix test Post: 302328465

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Top Forums Programming a strange segment fault about ltp-posix test Post 302328465 by yanglei_fage on Wednesday 24th of June 2009 11:11:42 AM

06-24-2009

Registered User

a strange segment fault about ltp-posix test

Hi all

In the ltp-posix test,there is a case in open_posix_testsuite\conformance\interfaces\timer_gettime\speculative/6-1.c

Quote:

#include <time.h>
#include <stdio.h>
#include <errno.h>
//#include "posixtest.h"
#define BOGUSTID 9999
int main(int argc, char *argv[])
{
timer_t tid;
struct itimerspec its;
tid = (timer_t) BOGUSTID;

if (timer_gettime(tid, &its) == -1) {
if (EINVAL == errno) {
printf("fcn returned -1 and errno==EINVAL\n");
//return PTS_PASS;
} else {
printf("fcn returned -1 but errno!=EINVAL\n");
printf("Test FAILED\n");
//return PTS_FAIL;
}
}
printf("fcn did not return -1\n");
//return PTS_PASS;
}

I run the above code,it will has a segment fault, if I modify it to below,it works well

Quote:

#include <time.h>
#include <stdio.h>
#include <errno.h>
//#include "posixtest.h"
#define BOGUSTID 9999
int main(int argc, char *argv[])
{
timer_t tid;
struct itimerspec its;
int tval=BOGUSTID;
printf("%d\n",tval);
tid = (timer_t) &tval;
printf("%d\n",tid);
if (timer_gettime(tid, &its) == -1) {
if (EINVAL == errno) {
printf("fcn returned -1 and errno==EINVAL\n");
//return PTS_PASS;
} else {
printf("fcn returned -1 but errno!=EINVAL\n");
printf("Test FAILED\n");
//return PTS_FAIL;
}
}
printf("fcn did not return -1\n");
// return PTS_PASS;
}

Anybody can tell me why?

yanglei_fage

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LEARN ABOUT LINUX

pcre-config

PCRE-CONFIG(1)						      General Commands Manual						    PCRE-CONFIG(1)

NAME

       pcre-config - program to return PCRE configuration

SYNOPSIS

       pcre-config [--prefix] [--exec-prefix] [--version] [--libs] [--libs-posix] [--cflags] [--cflags-posix]

DESCRIPTION

       pcre-config returns the configuration of the installed PCRE libraries: the options required to compile a program to use them.

OPTIONS

       --prefix  Writes the directory prefix used in the PCRE installation for architecture independent files (e.g. /usr) to standard output.

       --exec-prefix
		 Writes  the  directory  prefix  used in the PCRE installation for architecture dependent files (normally the same as --prefix) to
		 standard output.

       --version Writes the version of PCRE installed to standard output.

       --libs	 Writes to standard output the command line options required to link with PCRE (e.g. -lpcre).

       --libs-posix
		 Writes to standard output the command line options required to link with the  PCRE  POSIX  emulation  library	(e.g.  -lpcreposix
		 -lpcre).

       --cflags  Writes  to standard output the command line options required to compile files that use PCRE (this often includes some -I options,
		 but is blank on debian systems).

       --cflags-posix
		 Writes to standard output the command line options required to compile files that use the  PCRE  POSIX  emulation  library  (this
		 often includes some -I options, but is blank on debian systems). Suppress printing of filenames when searching multiple files.

       AUTHOR
	      This manual page was written by Mark Baker <mark@mnb.org.uk>, for the Debian GNU/Linux system (but may be used by others).

SEE ALSO

       pcre(3)

																    PCRE-CONFIG(1)