Questions tagged [segmentation-fault]
The segmentation-fault tag has no usage guidance.
296
questions
0
votes
1answer
14 views
Help on Pset4-recover, Segmentation Fault
Here is my code:
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
//remember: free malloc + fclose files
typedef uint8_t BYTE;
int main(int argc, char *argv[])
{
//...
0
votes
1answer
16 views
Seg Fault in Writing to JPG
I am working on PSET4 Recover, and got to writing to the output file, but for some reason, it SegFaults when I try writing to a jpg. The error, as far as I can tell, occurs in the While Loop in the ...
0
votes
1answer
36 views
I get segmentation fault after this line and I don't know why
I get segmentation fault at this point in my code and I can't figure out why
string convert(string text, int num_copy)
{
string new_index = NULL, answer;
for (int j = 0; ; j ++)
{
if (isupper(text[...
0
votes
1answer
26 views
pset4: recover segmentation fault
The code compiles fine but when running ./recover i keep getting a seg fault. i tried valgrind but still can't seem to get what the problem is exactly.
#include <stdio.h>
#include <stdlib.h&...
0
votes
2answers
32 views
I keep getting segmentation fault and I don't know why
I'm trying to print the value of argv[1] to check if the program will run as expected. It compiles fine, but I keep getting 'segmentation fault' when the program runs.
#include <cs50.h>
#include ...
1
vote
1answer
28 views
pset3 Plurality
Having an issure writing my plurality code pset.
i wanted to have my programme promt a user when they have made an invalid vote entry. and it works ok but ive found a bug while testing it:
code:
#...
0
votes
1answer
25 views
PSET5: Trying to implement dictionary.c using trie. But segmentation fault in check()
My implementation compiles but I am getting a segmentation fault when I execute. My program is working fine through the load function because the output screen shows this
"~/pset5/speller/ $ ./...
0
votes
1answer
53 views
Plurality Pset 3 I need Help
Whats wrong i keep getting segfault
for(int o = 0; o < n - 1; o++)
{
if(candidates[o].votes > high0)
{
high0 = candidates[o].votes;
name1 = candidates[o].name;
}
...
0
votes
1answer
32 views
Segmentation Fault with Problem Set 4 (Recover)
I am getting a segmentation fault when running my program that only allows me to print out 1 broken image. However, when I run the program with valgrind it prints out 49 of the 50 photos, and the only ...
0
votes
0answers
12 views
segmentation fault when i compile my program
int main(void)
{
long long cardnumber = 0, calc;
//string credit[1];
//string lengthkey[1];
string credit[1];
string lengthkey[1];
int countcardcharacters = 0;
//user ...
0
votes
1answer
52 views
PSET4 - Need help with Recover problem
I am stuck in this problem, when I run it I keep getting a segmentation fault.
I think that the bug in my code is in the while loop. In the walkthrough of the problem it was suggested to check if ...
0
votes
1answer
48 views
CS50 pset5 segmentation fault
I've spent a whole day trying to solve pset5. When i try to run the code it kept showing "Segmentation fault".
Here's what i get from Valgrind
==21210== HEAP SUMMARY:
==21210== in use at ...
0
votes
1answer
41 views
pset4 / recover Segmentation Fault
I have been trying to solve RECOVER from PSET4 and I keep getting a segmentation fault. Any ideas on why this happens? Thank you so much for any help.
#include <stdio.h>
#include <stdlib.h>...
0
votes
1answer
16 views
Pset5 : Valgrind seg fault in load function
Currently doing the pset5, and keep getting seg fault when running Valgrind. This is the error messsage I get:
/etc/profile.d/cli.sh: line 94: 1150 Segmentation fault valgrind ./speller texts/...
0
votes
1answer
51 views
PSET4, RECOVER: Segmentation Fault
I have been trying to solve RECOVER from PSET4 and I keep getting a segmentation fault. Any ideas on why this happens?
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
...
0
votes
1answer
26 views
Pset5 segmentation fault due to sprintf
// Loads dictionary into memory, returning true if successful else false
bool load(const char *dictionary)
{
int i;
for (i = 0; i < 5382; i++)
{
table[i] = NULL;
}
int ...
0
votes
1answer
46 views
Getting a segmentation fault when testing my code. I want to make sure the user is typing a correct input e.g. ./caesar 2 and not ./ caesar a
Trying to generate loop to check for alphabetical inputs in the user command argument.
But i get a segmentation fault when testing it.
error outcome.
~/Week_2/pset2/ $ ./caesar a
Segmentation fault
...
0
votes
1answer
49 views
PSET 5 Unload Segmentation Fault
I've been stuck on this problem set for a while now. Valgrind is telling me I have a problem in my unload function, which is "Conditional jump or move depends on uninitialised value(s)". I can't find ...
0
votes
2answers
46 views
PSET 4 Recover, don't know what's causing seg fault
My code has been suffering from a seg fault, I followed the logic from the walkthrough pseudocode but unfortunately I cant seem to fix the issue.
#include <stdio.h>
#include <stdlib.h>
#...
0
votes
1answer
91 views
Problem Set 2 - Caesar
I am very new to coding. Prior to starting CS50, I have had no experience in coding at all, so pardon me if my questions are trivial.
I am trying to write some code for 'Caesar' in Problem Set 2 and ...
0
votes
1answer
25 views
getting segmentation error when I use check50
I am not very good at programming. I had some knowledge of C and now I have taken CS50 course. Been struggling with the problem Caesar. Below is what I have written:
#include <stdio.h>
#...
0
votes
1answer
66 views
Week 4 recover segmentation fault
I have spent two evenings on recover but I just can not figure it out. For the first time I managed to recover everything but the first image without any problems, so I did some searching and ...
0
votes
1answer
59 views
i keep on getting segmentation fault in pset5
// Returns true if word is in dictionary else false
bool check(const char *word)
{
//change letters to lowercase
int length = strlen(word);
char copy[length + 1];
for (int i = 0; i < length;...
0
votes
1answer
55 views
Getting a segmentation fault when i try to run pset5 speller and i'm not sure what's the problem. Appreciate it if someone can explain. thanks!
// Implements a dictionary's functionality
include
include "dictionary.h"
include
include
include
include
// Represents a node in a hash table
typedef struct node
{
char word[LENGTH + ...
0
votes
1answer
46 views
My code for Caesar gets segmentation error when executed, but in debugger it works fine
I'm getting a segmentation error as soon as I execute this program. I've run it through the debugger and it works fine and outputs the correct ciphertext. There's gotta be something going on in the ...
0
votes
0answers
29 views
Segmentation Fault in pset 5 load function (maybe)
I have looked at this for hours. I am pretty sure the segmentation fault that I get when I try to run it is from line 82 to line 97. I only think this because load never successfully prints the ...
0
votes
2answers
68 views
Why am I running into a segmentation error in PSET 3 plurality?
I've been working on plurality for hours now and I'm stuck with a "segmentaion error." So my approach to this problem was to sort the candidate objects in terms of votes and print the first object (...
0
votes
1answer
66 views
I have a segmentation fault in Caesar in pset 2
Okay, first time writing here and I am a complete noobie. The program compiles and I have run the debugger, and it seems that I have a segmentation fault which I have marked. Also, I have used a lot ...
0
votes
0answers
38 views
pset5 speller issue
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include "dictionary.h"
#include "string.h"
#include <cs50.h>
#include <strings.h>
typedef struct node
{
...
1
vote
2answers
103 views
CS50 PSET4 RECOVER.C SEGMENTATION FAULT PLEASE HELP!
I'm seriously struggling with this assignment and I can't seem to find the problem in my code.
I'm supposed to create a program that reads a raw card one block at a time with each block containing ...
5
votes
0answers
214 views
Do YOU know how to find a seg fault?? Advice to new programmers
I have noticed a rash of questions lately that are essentially this: "My code has a segmentation fault. The code compiles, many tests pass, but I can't figure out the problem!"
If this is you, then ...
0
votes
1answer
116 views
Pset4 Recover conceptually struggling
Pset4 Recover is different since it uses files; fopen, fcloser, fprintf, and fread. It adds a whole new dimension to the coding. Its change from just formatting conceptions to making sure all the ...
0
votes
1answer
74 views
Pset 5 Speller Segmentation Fault
Seg-faults seem to be the bane of my existence. I've tried running valgrind and using printf functions to find the line(s) of code that are causing the seg-fault in my implementation of speller, but ...
0
votes
1answer
39 views
How to identify cause of Segmentation Faults?
Working on problem set 4- Recover but keep getting Segmentation Fault. Tried valgrind too, but could not figure it out.
Could anyone kindly anyone look into the code and tell me where does the ...
0
votes
1answer
249 views
Segmentation fault in Speller CS50
Similar to others, I have been getting a segmentation fault on Pset5, though my code compiles and valgrind doesn't flag any errors or leaks. I am not exactly sure what to look for with seg faults, so ...
0
votes
1answer
45 views
PSET4 Recover Segmentation Fault, please help
I hope everyone is doing well during this difficult time, my prayers to those been affected by it.
I have difficulty debugging the segmentation fault here and the cs50 debugger is not too helpful on ...
0
votes
1answer
99 views
Problem Set 5 - Speller (Load and Check function) segfaults
I have a somewhat okay understanding on how linked lists worked since I've had some experience working with them in high school. However, I keep running into these pesky segfaults and I have no idea ...
0
votes
0answers
70 views
pset5 segmentation fault load() function
I'm getting a segmentation fault when I run speller.
The valgrind output is as follows. I think it's due to the load() function.
Valgrind output:
==8612== Copyright (C) 2002-2017, and GNU GPL'd, by ...
0
votes
0answers
15 views
Recover: Segmentation fault when assigning JPEG file from function return to image file outside function
I'm trying to return a file with a name from a function according to the sequential ordering required, but as soon as it returns the value, a segmentation fault occurs. I have inkling that it may have ...
0
votes
1answer
72 views
why pset5 works with small dictionary but with large dictionary gives munmap_chunk(): invalid pointer Aborted error?
I have been following all the instructions very carefully and have been able to come up with a code that looks like it should be doing all the steps needed in every function, I would say.
When I ...
0
votes
1answer
39 views
Pset 5 Speller. I get segmentation fault. The problem seems to be in the load function, when creating a linked list
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "dictionary.h"
#include <ctype.h>
#include <stdio.h>
int wcount = 0;
// Represents a node in a hash ...
0
votes
1answer
52 views
Segmentation fault in Readability from pset2
Can someone please help me in understanding the mistake I am doing? I've got the segmentation fault in the terminal window after running the program and providing the text.
Here is my code
...
and ...
0
votes
0answers
88 views
segmentation error in caesar, I am unable to understand why
Here is my code:
#include <stdio.h>
#include <cs50.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
int main(int argc, string argv[]...
0
votes
2answers
539 views
pset4 filter: reflect produces “UndefinedBehaviorSanitizer:DEADLYSIGNAL” forever
When I filter to reflect an image, it keeps printing the following without stopping:
UndefinedBehaviorSanitizer:DEADLYSIGNAL
UndefinedBehaviorSanitizer:DEADLYSIGNAL
UndefinedBehaviorSanitizer:...
0
votes
1answer
61 views
pset 3 Recover Segmentation fault
So, after some manipulations with my code I`ve got to Segmentation fault. Here is my code so far
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
// ensure ...
0
votes
1answer
50 views
PSET3 -I am getting segmentation fault
I am getting seg fault over and over again. Could anyone help out please. I am pretty sure the functional part of the code, the while loop, should be working properly.
Thanks in advance.
#include &...
0
votes
1answer
29 views
pset4 speller trie segmentation fault
I am doing the trie version of speller in pset4 and keep getting a segmentation fault.
I have run my code on short dictionaries and short text files and it seems to work just fine but when I try ...
0
votes
1answer
37 views
Segmentation fault on PSET3 recover
My program compiles, but wherever it runs I recieve a segmentation fault error. However i cannot see where the source of the problem is:
#include <stdio.h>
#include <stdlib.h>
#include &...
0
votes
1answer
49 views
Recover: Segmentation fault
Everytime I try to run this code, it gives me a segmentation fault error. What is wrong with my logic?
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
// ...
0
votes
1answer
25 views
PSET 3 recover I can't open pointers. Always returns a NULL value
Whenever I try to run this code, it returns "could not open file", which means that jptr is assigned a null value. I don't know how to get rid of this, tried so many solutions. It keeps on happening ...
