10-22-2010
I would suggest looking up the man page for "free". Free is only called on memory allocated using commands such as "malloc", "calloc" or "realloc". Your use of it in this program is corrupting the process memory and making it coredump.
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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. Programming
what r the situations to receive an error msg like the one below
Segmentation Fault (core dumped) (2 Replies)
Discussion started by: bankpro
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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)
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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
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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
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6. Shell Programming and Scripting
Hi all,
I have a folder with some 28 files. I have a script file that will iteratively take one file at a time from the folder and provide an output for the input file. Till the 7th file, there was no problem but from the 8th file onwards, i got this Segmentation Fault(Core Dump) error. A file... (2 Replies)
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7. Programming
I´m writing this program in QNX , I`m kinda new to UNIX and programing in general, and when I try to run it it gives me the Memory Fault error. Can anyone help?
#include <stdio.h>
#include <fcntl.h>
void main(void)
{int a,ter;
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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)
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Can anyone tell me why I keep getting a Segmentation fault when I try to run tilda?
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Segmentation fault (core dumped)
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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 }
{
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LEARN ABOUT OPENDARWIN
mapmalloc
mapmalloc(3MALLOC) Memory Allocation Library Functions mapmalloc(3MALLOC)
NAME
mapmalloc - memory allocator
SYNOPSIS
cc [ flag ... ] file ... -lmapmalloc [ library ... ]
#include <stdlib.h>
void *malloc(size_t size);
void *calloc(size_t nelem, size_t elsize);
void free(void * ptr);
void *realloc(void *ptr, size_t size);
DESCRIPTION
The collection of malloc functions in this library use mmap(2) instead of sbrk(2) for acquiring new heap space. The functions in this
library are intended to be used only if necessary, when applications must call sbrk(), but need to call other library routines that might
call malloc. The algorithms used by these functions are not sophisticated. There is no reclaiming of memory.
The malloc() and free() functions provide a simple general-purpose memory allocation package.
The malloc() function returns a pointer to a block of at least size bytes suitably aligned for any use.
The argument to free() is a pointer to a block previously allocated by malloc(), calloc() or realloc(). If ptr is a NULL pointer, no
action occurs.
Undefined results will occur if the space assigned by malloc() is overrun or if some random number is handed to free().
The calloc() function allocates space for an array of nelem elements of size elsize. The space is initialized to zeros.
The realloc() function changes the size of the block pointed to by ptr to size bytes and returns a pointer to the (possibly moved) block.
The contents will be unchanged up to the lesser of the new and old sizes. If the new size of the block requires movement of the block, the
space for the previous instantiation of the block is freed. If the new size is larger, the contents of the newly allocated portion of the
block are unspecified. If ptr is NULL, realloc() behaves like malloc() for the specified size. If size is 0 and ptr is not a null pointer,
the space pointed to is freed.
Each of the allocation functions returns a pointer to space suitably aligned (after possible pointer coercion) for storage of any type of
object.
The malloc() and realloc() functions will fail if there is not enough available memory.
Entry points for malloc_debug(), mallocmap(), mallopt(), mallinfo(), memalign(), and valloc() are empty routines, and are provided only to
protect the user from mixing malloc() functions from different implementations.
RETURN VALUES
If there is no available memory, malloc(), realloc(), and calloc() return a null pointer. When realloc() returns NULL, the block pointed to
by ptr is left intact. If size, nelem, or elsize is 0, a unique pointer to the arena is returned.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
brk(2), getrlimit(2), mmap(2), realloc(3C), malloc(3MALLOC), attributes(5)
SunOS 5.10 20 Feb 2004 mapmalloc(3MALLOC)