---------- Post updated at 04:20 AM ---------- Previous update was at 04:09 AM ----------
there is something wrong int the code array = realloc(array,sizeof(int));
but the program can successfully run!
when i modify it to "array = realloc(array,(1 + n_values +1)*sizeof(int));"
the program run successfully ,too!
why !~
who can help me !
thanks !
Last edited by vincent__tse; 10-24-2011 at 05:15 AM..
Can Any body give me a exampla which has the usage of realloc
i want a function which uses realloc & increases /decreases the size of a pointer (0 Replies)
Hello,
my program works properly but valgrind tells me I am not freeing allocated memory. I think the problem is in realloc.
I am pretty sure I do something wrong with realloc, because I changed it a bit and valgrind noticed less errors (that the program wasn't working properly with less errors... (3 Replies)
hi,
I'm using gcc version 3.4.6 on a Red Hat system... (not sure how to determine version of glibc)
when i run the following, i get:
glibc detected *** realloc(): invalid next size: 0x0804a170
I'm not sure what is wrong. The error happens on the second iteration of
the while loop.... (3 Replies)
N00B here. This function would be easier using a char pointer along with free. But I wish to learn how to use char static pointers (they do not require free, right ?).
How do I erase the content of a static pointer ? Terminating the string works but the static pointer's content is not being... (4 Replies)
Why when using realloc, john is reversed 3 times but not the other 2 names ? But if I use malloc, then the 3 names are reversed correctly ? (but then there is a memory leak)
How can I reverse all 3 names without a memory leak ?
char *BUFFER = NULL;
char *STRREVERSE(const char *STRING)
{... (5 Replies)
Hi,
I am seeing varying results about, when realloc() fails in reallocation.
Which one is correct out of the below?
a) realloc() maintains the original pointer (i.e) the original pointer is left unaltered/untouched but relloc() returns the NULL value.
b) original buffer pointer is lost... (3 Replies)
Hi all
I'm trying to use someone else's software, which has a realloc that fails in it. This is probably due to memory limitations, as it only happens when I use this software on huge datasets.
First question : how to diagnose if it's a soft or hard limitation? I mean, if it's due to my... (10 Replies)
b = realloc(a, 1000);
if realloc succeeds and b!=a (not in-place replacement), does realloc automatically free a or I should free both a and b afterwards?
thank you! (5 Replies)
Not sure in which forum to post this. I'm trying here, in Programming.
I'm working on a PC with Intel Duo processor & 2GB of ram. OS is Ubuntu 10.04.
I'm having problems with a C++ program that makes extensive use of realloc(). It happens that as soon as the overall memory allocated(OS +... (14 Replies)
Hi everyone,
i made this program. is a simple one for practising malloc, realloc and structs.
I have a struct named shop as global variable in which i take the size of the matrix from the keyboard and after i malloc it.
I insert the values with the fullarray() and after i print the matrix with... (7 Replies)
Discussion started by: giampoul
7 Replies
LEARN ABOUT OSX
backtrace_symbols_fd
backtrace(3) BSD Library Functions Manual backtrace(3)NAME
backtrace, backtrace_symbols, backtrace_symbols_fd -- call stack backtrace and display functions
SYNOPSIS
#include <execinfo.h>
int
backtrace(void** array, int size);
char**
backtrace_symbols(void* const* array, int size);
void
backtrace_symbols_fd(void* const* array, int size, int fd);
DESCRIPTION
These routines provide a mechanism to examine the current thread's call stack.
backtrace() writes the function return addresses of the current call stack to the array of pointers referenced by array. At most, size
pointers are written. The number of pointers actually written to array is returned.
backtrace_symbols() attempts to transform a call stack obtained by backtrace() into an array of human-readable strings using dladdr(). The
array of strings returned has size elements. It is allocated using malloc() and should be released using free(). There is no need to free
the individual strings in the array.
backtrace_symbols_fd() performs the same operation as backtrace_symbols(), but the resulting strings are immediately written to the file
descriptor fd, and are not returned.
EXAMPLE
#include <execinfo.h>
#include <stdio.h>
...
void* callstack[128];
int i, frames = backtrace(callstack, 128);
char** strs = backtrace_symbols(callstack, frames);
for (i = 0; i < frames; ++i) {
printf("%s
", strs[i]);
}
free(strs);
...
HISTORY
These functions first appeared in Mac OS X 10.5.
SEE ALSO dladdr(3), malloc(3)Mac OS X February 15, 2007 Mac OS X