1. Programming

when i try to use the class i wrote, i either get this: *** glibc detected *** double free or corruption: 0x40236ff4 *** and the proccess exits with an error code of 0; or it segfaults. could someone look at my header file (with imp.) to give me some insight as to why its not working? ... (19 Replies)

2. Programming

I am using a structure defined as follows struct gene_square { double *x; double *y; };I have class, with a member function which is a pointer of this type: gene_square* m_Genes;I am allocating memory in the constructors like this: m_Genes = new gene_square; for (ii=0;... (1 Reply)

3. Programming

there seems not to be error in this segment. In some computers, it can work well. But in others, it will give a failure. why it ocurrs and how to deal with it? in a function: if( *ver == NULL ) { *ver = (vertex *) malloc(sizeof(vertex)); //this line ... (17 Replies)

4. Programming

Hi, I am having a hell of a time getting this to work. So basically, I have opened a popen to run a program that is going to prompt an action to occur half way through, when it gets to this I need to create a separate process and do some stuff, then return to the original process. This works... (0 Replies)

5. Programming

Hi All, I have a simple code which does some computation by matching string patterns. In brief: 1. The code reads .dat and .txt files. 2. .dat files are huge text files and .txt files contain some important words. 3. I am just doing strstr to find the patterns. 4. The function returns the... (3 Replies)

6. Programming

*** glibc detected *** ./a.out: malloc(): memory corruption (fast): Posted A minute ago M trying to make multiway tree and dont know what happend when this part of code get executed: 01void ins(NODE *ptr) 02{ 03 //working 04 if(ptr!=NULL) 05 { 06 SNODE *var=NULL; 07 var=(SNODE... (3 Replies)

7. Programming

I am using libxml2 library for XMl parsing and libxml++ is C++ wrapper over that. So I am using API of libxml++. I am creating my class and composing instance xmlpp::Node *pNode in that. my class also have funciton prepareXPathQuery() which creates query string and have other fucntion... (2 Replies)

8. Programming

Hi Friends, while executing the below code, am getting *** glibc detected *** ./ok: malloc(): memory corruption (fast) error, please suggest how to solve this issue. #include <stdio.h> #include <string.h> #include <sqlca.h> #include <alloca.h> /* Define constants for VARCHAR... (2 Replies)

9. Programming

Currently I test a shared library vendor provided in linux , the following is the simple source : #include <iostream> using namespace std; extern int test1(); extern int test2(); int main() { cout << "hello world" << endl ; return 0 ; cout << "Test 1" << endl; ... (6 Replies)

10. Homework & Coursework Questions

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: I'm doing aproximation of derivative called five-point stencil. For every value of x, in interval , in step... (0 Replies)