01-20-2006
Trying to read from an illegal memory location will cause this fault. i.e.
Quote:
1. If you fopen a file, it fails and the file pointer returned is NULL and you try to read from that file pointer. This will give you a segmentation fault.
This User Gave Thanks to blowtorch For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello To All!
Now anfd then I receive a message on my console:
Segmentation fault (core dumped)
What does it mean? Or more precisely what are the implications?
:confused: (1 Reply)
Discussion started by: Ivo
1 Replies
2. UNIX for Advanced & Expert Users
I use SCO UNIX 5.07 on a Compaq Proliant Machine. Each time I press the Escape or Delete key while running a program or issuing a FoxBase+ command from the dot prompt, I receive the error message: "Memory Fault - Core Dumped" and the screen locks up immediately.
I would appreciate if necessary... (0 Replies)
Discussion started by: bayuz
0 Replies
3. Solaris
i am getting Segmentation Fault (core dumped) on solaris,
but when i run the same program with same input on linux it runs successfully.
How can i trace the fault in program on solaris. (6 Replies)
Discussion started by: junaid.nehvi
6 Replies
4. Solaris
i am getting segmentation fault (core dumped)
i tried following things but couldn't understand what is wrong with my prog and where the problem is....
i have only adb debugger available on solaris....
so plz help
bash-3.00$ pstack core
core 'core' of 765: ./mod_generalised_tapinread... (4 Replies)
Discussion started by: junaid.nehvi
4 Replies
5. Red Hat
Hi All,
I am getting "Segmentation fault (core dumped)" error in the runtime. I am new this please can you tell me why is that i am getting this error and I am not sure of my compilation :
gcc -c avc_test.c
gcc -c md5.c
gcc avc_test.o md5.o -shared -Llibcoreavc_sdk.so -o proj
... (1 Reply)
Discussion started by: fido.genial
1 Replies
6. Programming
i am executing following program
int main()
{ char str;
FILE * fp;
int i=0; ... (4 Replies)
Discussion started by: bhavesh.sapra
4 Replies
7. UNIX for Advanced & Expert Users
When I was trying to mirror in my v880 server after OS up gradation from 8 to 10
metadb -afc 3 /dev/dsk/c1t1d0s7
I got an error
metadb: Segmentation Fault
Segmentation Fault (core dumped)
Then I logged a case to Oracle/sun team they suggest
"Please could you try
metadb -ac 3... (0 Replies)
Discussion started by: taherahmed
0 Replies
8. Programming
When I run programm show this message: Memory Fault (core dumped)
Does anyone can help me and tell me what is wrong? please
#include <stdlib.h>
#include <stdio.h>
#include <process.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
int main(int argc, char *argv) { ... (3 Replies)
Discussion started by: ebasse2
3 Replies
9. UNIX and Linux Applications
Can anyone tell me why I keep getting a Segmentation fault when I try to run tilda?
$ tilda
Segmentation fault (core dumped)
It seemed to run after I deleted my tilda directory like this thread said to do. Unfortunately it wouldn't let me set my keybinding with anything I tried.
... (0 Replies)
Discussion started by: cokedude
0 Replies
10. UNIX for Dummies Questions & Answers
Hi,
thanks to a precedent post, and thanks to the reply of derekludwig of the forum, I have convert my first awk command as :
test.txt is : AAAAAGHIJKLAjKMEFJKLjklABCDJkLEFGHIJKL
awk -f findstring.awk test.txt > textreturn.txtfindstring.awk is :
BEGIN{ SLENGTH = 3 }
{
... (3 Replies)
Discussion started by: thewizarde6
3 Replies
FEOF(3) 1 FEOF(3)
feof - Tests for end-of-file on a file pointer
SYNOPSIS
bool feof (resource $handle)
DESCRIPTION
Tests for end-of-file on a file pointer.
PARAMETERS
o $handle
-The file pointer must be valid, and must point to a file successfully opened by fopen(3) or fsockopen(3) (and not yet closed by
fclose(3)).
RETURN VALUES
Returns TRUE if the file pointer is at EOF or an error occurs (including socket timeout); otherwise returns FALSE.
NOTES
Warning
If a connection opened by fsockopen(3) wasn't closed by the server, feof(3) will hang. To workaround this, see below example:
Example #1
Handling timeouts with feof(3)
<?php
function safe_feof($fp, &$start = NULL) {
$start = microtime(true);
return feof($fp);
}
/* Assuming $fp is previously opened by fsockopen() */
$start = NULL;
$timeout = ini_get('default_socket_timeout');
while(!safe_feof($fp, $start) && (microtime(true) - $start) < $timeout)
{
/* Handle */
}
?>
Warning
If the passed file pointer is not valid you may get an infinite loop, because feof(3) fails to return TRUE.
Example #2
feof(3) example with an invalid file pointer
<?php
// if file can not be read or doesn't exist fopen function returns FALSE
$file = @fopen("no_such_file", "r");
// FALSE from fopen will issue warning and result in infinite loop here
while (!feof($file)) {
}
fclose($file);
?>
PHP Documentation Group FEOF(3)