FORTRAN error *** glibc detected ***

 
Thread Tools Search this Thread
Homework and Emergencies Homework & Coursework Questions FORTRAN error *** glibc detected ***
# 1  
Old 03-07-2015
FORTRAN error *** glibc detected ***

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 [a,b], in step of 0.1 i need to calculate derivative.

2. Relevant commands, code, scripts, algorithms:

The equation is like this:
Code:
Five-point stencil:
(-f(x + 2h) + 8f(x + h) - 8f(x - h) + f(x - 2h))/(12*h)
---> (-first+8*sec-8*third+fourth)/12*h

I want to calculate every of theese, so first, sec, third.... expression and then at the end calculate derivative.

3. The attempts at a solution (include all code and scripts):

Code:
variables = 'x'
x=a+2*h
do while(x<=b)
variablesvalues=x
x=x+delta
call recog_variables (func, variables)
first(i)=evaluate(variablesvalues)
print*,'to je',first(i)
i=i+1
call destroyfunc()
end do



x=a+h  !without this, program works, prints first(i), but it doesn't print sec(i).

do while(x<=b)
variablesvalues=x
x=x+delta
call recog_variables (func, variables)
sec(i)=evaluate(variablesvalues)
print*,'to je',sec(i)
i=i+1
call destroyfunc()
end do


4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):

I'm studying physics in Rijeka, University of Rijeka, Croatia, but it's not for exact course, I'm doing it because I want to learn...
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

C++ glibc detected double free or corruption(!prev) using shared library

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)
Discussion started by: barfatchen
6 Replies

2. Programming

*** glibc detected *** ./a.out malloc() memory corruption

I am facing a problem of memory corruption. The loop runs for the first time but does not go through the second time. What could be the problem? for(int z=0;z<2;z++) { fp=fopen("poly.dat","r"); /*do something which reads this file into a 2D array*/ fclose(fp); ... (10 Replies)
Discussion started by: dare
10 Replies

3. UNIX and Linux Applications

Install glibc-debug for glibc-2.11.3-17.31.1 on SLES 11

I have to debug a function getopt_long in glibc-2.11.3-17.31.1. For that how can I download and install its corresponding glibc-debug on SLES 11? (8 Replies)
Discussion started by: rupeshkp728
8 Replies

4. Programming

*** glibc detected *** : malloc(): memory corruption (fast)

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)
Discussion started by: mpjobsrch
2 Replies

5. Programming

*** glibc detected *** ./a.out: malloc(): memory corruption (fast):

*** 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)
Discussion started by: exgenome
3 Replies

6. Programming

"GLIBC detected Error" for a simple C code.

Here is a simple program to find the vowels in the string. Output is fine. But I'm getting GLIBC detected as shown below : :eek: *** glibc detected *** ./VOWELS: free(): invalid pointer: 0x08b82013 *** ======= Backtrace: ========= /lib/libc.so.6 /lib/libc.so.6(cfree+0x59) ./VOWELS... (5 Replies)
Discussion started by: Ranji Raj
5 Replies

7. Programming

Why does this occur? *** glibc detected *** malloc(): memory corruption: 0x10013ff8 ***

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)
Discussion started by: cdbug
17 Replies

8. Programming

Pointer to a struct (with pointers) *** glibc detected *** double free

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)
Discussion started by: jatoo
1 Replies

9. Programming

*** glibc detected *** double free or corruption: 0x40236ff4 ***

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)
Discussion started by: norsk hedensk
19 Replies

10. Programming

*** glibc detected *** free(): invalid next size (normal): 0x0000000000503e70 ***

hi, I have made a small C program that make use of malloc and free for processing bitmap images. when i try to run the program, I am getting a error something like *** glibc detected *** free(): invalid next size (normal): 0x0000000000503e70 *** I am not sure of which free() is causing this... (1 Reply)
Discussion started by: vbreddy
1 Replies
Login or Register to Ask a Question