Questions tagged [valgrind]
The valgrind tag has no usage guidance.
220 questions
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Speller valgrind test failing
I am working on the speller problem, I got every test except for valgrind to pass.
Here is the valgrind error:
running valgrind --show-leak-kinds=all --xml=yes --xml-file=/tmp/tmpbhs1m7v4 -- ./speller ...
0
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1
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122
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Valgrind output of Speller task. (debuginfo reader: Possibly corrupted debuginfo file)
I've just completed Speller task. When I run the task with valgrind on command line I encounter some kind of error, which I don't know how to deal with. I'm going to attach the error image and ...
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1
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36
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check50 indicates that my code has memory errors but executing valgrind in terminal says my code has zero memory errors
what is the problem with my code
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
typedef uint8_t BYTE;
int main(int argc, char *argv[])
{
//check for usage
if (...
- 3
0
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1
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47
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pset5 speller valgrind test fails
in check50 my code fails last test (valgrind test) fails it says:
"Use of uninitialised value of size 8: (file: dictionary.c, line: 41)"
i starred line 41 below,
I tried both using if(!...
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1
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340
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Recover runs, but leaks 472 bytes in 1 block
The code for recover (pset4) works fine, and has passed check50, except for the last check - no memory leaks. Valgrind shoots back:
==5482== Memcheck, a memory error detector
==5482== Copyright (C) ...
- 31
0
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0
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33
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(pset5)I get a segmentation foult, even though check50 says that everything is allright
as per the title — I get a segfoult and can't check my times, even though check50 claims that the code is practically ready to submit.
Here's my code, followed by valgrind results:
// Implements a ...
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1
answer
22
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Segmentation fault in pset4 recover when reading file
I tried solving recover.c. But when I tried to run it (without valgrind), I got segmentation fault. When I ran it again with valgrind, it told me that the culprit is in line 40, where I read the file ...
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1
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77
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Getting segmentation fault when running speller.c
I am trying to solve speller and I always get segmentation fault every time I run it. I checked the error on valgrind and it told me that the culprit is in line 108, where I allocate a new node. How ...
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2
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53
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Hello guys... Good day. I'm currently on the pset 4 (recover). program is working well, but the (valgrind) requirement in the check50 isn't checking
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
typedef uint8_t BYTE;
int main(int argc, char *argv[])
{
// Check that command-line arguments is 2
if (argc != 2)
...
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2
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215
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Valgrind error in pset5 speller
newbie here this is my first post, I hope you guys can help me! I am stacked with speller, my program works apparently fine but the valgrind test outputs some errors that I can't understand. I have ...
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38
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PSET 5 Speller Valgrind Memory
My code is functional according to check50 but I'm still leaking bad memory. Based on amount of memory lost, I'm guessing something to close up in LOAD, but could be UNLOAD as well. First thoughts are ...
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0
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1
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58
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PSET 4 Recover Valgrind Check
Valgrind indicates I have 49 memory blocks left to close. Otherwise, the code satisfies check50. I'm thinking I need to nest the fclose functions within the loop, but I can't get it right. Thoughts?
...
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1
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23
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Pset 4: Why Error at end of checkcs50?
this is how my code looks. Only *filename has a malloc attached to it.
Why this valgrind error.
This is how the logs look.
- 103
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1
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53
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Pset5 Speller - Got "Conditional jump or move depends on uninitialised value(s)", "Use of uninitialised value of size 8" by check50
I try my code here to solve the pset5 - speller question, it seems pretty ok with locally run my valgrind. But when I use check50 to check it. One error(and only 1) happened.
I tried to assigned ...
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1
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105
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PSET 4 Recover I am not getting all the checks in my program
The program works fine but the last condition is not fulfilled. Valgrind tests failed. I know I have to close the opened files but I cant seem to figure out where to do that. Please help.
Following is ...
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12
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where is the memory leak in my code?
cant find where is the memory leak
here is my code
// Implements a dictionary's functionality
#include <stdio.h>
#include <ctype.h>
#include <stdbool.h>
#include <string.h>
#...
0
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1
answer
115
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Speller: Valgrind Still Reachable Error
after scouring the internet for multiple solutions to my Valgrind issue I cannot seem to find any that is specific to my code. I've spent hours coding this and Check50 gave me the green light except ...
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1
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1k
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Program is free of memory errors, valgrind tests failed - pset5 speller
I'm am getting this error - program is free of memory errors, valgrind tests failed; see log for more information.
I have tried so many things but I keep getting more errors. Here is my code:
// ...
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72
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pset5 speller memory errors with valgrind
i've been working in pset5 and cannot make it work. I've read some similar questions and made some improvements to my code, but still can't figure what is wrong. Any tips are welcomed!
Here is my code:...
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719
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Helping with Valgrind "Conditional jump or move depends on uninitialised value(s)" in simple C code
So right now my code seems to me like it doesnt have issues, it looks like this:
int i;
char hello[] = "Hello World!";
char * str = malloc(strlen(hello)+1);
for(i = 0; i < ...
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1
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747
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Valgrind invalid write and read
I recently made the speller excercise and it is working, has no memory leaks but I am getting some Invalid read and Invalid write errors from Valgrind in my check function.
First I got a error because ...
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39
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pset5 unload + valgrind
I tried to solve problem with memory usage but did not figure out where is the problem.
Dictionary unloads successfully but still issue with memory access exists.
I think that problem with ...
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32
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CS50 PSET 5 SPELLER - Valgrind issues
I have been trying to figure out what is wrong with my code for a while, running through valgrind and the like. Sorry for the large wall of text, but if you could help me figure out just what one of ...
1
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1
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51
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Speller - unload is giving me 1000000 errors in valgrind
so I don't know what I should do with my unload function to make it work properly? Because valgrind isn't happy at all and it's giving 1000000 errors (literally). The load function works perfectly (I ...
- 137
1
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2
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117
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PSET 5 SPELLER - Passing Valgrind but not Check50
I am very close to solving this, my code is returning 0 errors from Valgrind when I run that on its own, but its not passing the memory errors parameter in check50, so I'm very confused. Any help ...
0
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2
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56
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pset5 speller passess all checks except valgrind. no memory leaks but errors raised. confused
// Implements a dictionary's functionality
#include <stdbool.h>
#include <cs50.h>
#include <stdlib.h>
#include <stdio.h>
#include "dictionary.h"
#include <strings....
0
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1
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235
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Valgrind says 8,013,096 bytes in 143,091 blocks are still reachable in loss record 1 of
Hi) I understand that something incorrect with unload function and that 143,091 blocks it's basically the number of words in the dictionary that was uploaded by the program and I didn't manage to ...
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1
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362
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PSET 5: valgrind: memory marked as 'still reachable'
fortunately I finally made it through speller. The only thing remaining is a valgrind error:
==2226== HEAP SUMMARY:
==2226== in use at exit: 8,013,096 bytes in 143,091 blocks
==2226== total heap ...
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2
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271
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Pset5 - Speller - Valgrind error for malloc in load function
I get all test results correct except the Valgrind error as follows, does anyone know why is it so and share some insights please? thanks!
running valgrind --show-leak-kinds=all --xml=yes --xml-file=/...
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2
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44
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In PSET5/ Speller - Unload Valgrind says Conditional jump or move depends on uninitialised value(s)
So my code passes all the Check50 tests apart from the memory one. I have been playing around with this for ages, but don't understand what the problem is. Here's what valgrind says.
And here's the ...
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58
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Pset5 Speller Valgrind error trouble
Baby programmer over here. Before moving on to the (check) function, I wanted to make sure the (load) function was correct.
After performing Valgrind, I received the following errors. Up to this point,...
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0
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21
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PSet 5 Speller - Valgrind Segmentation Fault
I keep getting a hit on valgrind. It says to check line 99 but I know I free(cursor) before the end of the block :-(
my entire code
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Errors with Valgrind on Speller (Still Reachable) - PSET5
I am almost done with speller but when I pass it through valgrind, it says there are some mistakes. More specifically, it says a bunch of bytes are still reachable. I don't know whether my problem is ...
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1
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48
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Struggling with PSET5 Speller valgrind problems (& possibly more)
I've been working on PSET5 for weeks now on & off and I'm becoming really frustrated. I think I'm lacking some understanding of the malloc/free relationship, I'm not sure. Here's all of my code. ...
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1
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103
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I dont understand valgrind pset5
Error from valgrind
$ valgrind ./speller texts/cat.txt
==1453== Memcheck, a memory error detector
==1453== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==1453== Using Valgrind-3.13....
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0
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2
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78
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Speller program runs accurately with memory leaks. When I add free() to correct memory leak, program stops executing
My speller program runs and produces accurate outputs. It passes all but one of the check50 checks. It fails because it has a memory leak.
I added free() to the load loop where I am allocating ...
0
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1
answer
79
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Speller pset 5: Valgrind gives me error
I am doing pset 5 speller and It seems to be okey less valgrind check.
Valgrind HELP50 gives me these errors
==22585== Use of uninitialised value of size 8
==22585== at 0x40110B: hash (dictionary.c:...
0
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2
answers
162
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Speller Valgrind Issues
I've been trying to finish up the speller pset, and while everything works well, I keep getting a memory leak. When I rerun check50 with --log, I get:
checking for valgrind errors...
56 bytes in 1 ...
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44
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Speller - not sure what's wrong
I'm struggling trying to find what the error is or why speller is behaving the way it is. Currently, when I run help50 valgrind, I get this error message:
==8634== 56 bytes in 1 blocks are definitely ...
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2
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231
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Valgrind - 2 memory leaks | Recover.c | Pset-4
Valgrind encountered two errors in the following code. I'm not able to get why is this happening even when I close files and free allocs. Please help if you can.
#include <stdio.h>
#include <...
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2
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153
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Pset 5 Help understanding Valgrind output
I was wondering if anyone could help me with interpreting the Valgrind error to trouble shoot. There are no memory leaks, but I am getting this error "Conditional jump or move depends on ...
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1
answer
51
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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&...
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1
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2
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53
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Valgrind issue on PSET5 - Edited
sorry that this is a repost of a deleted question. I made a mistake in reading the specifications and didn't realise I wasn't able to alter the function declarations in dictionary.c & .h. The ...
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1
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1
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410
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Pset5 Speller - Valgrind displays no leaks but code fails check50
any help would be much appreciated - I've been trawling other questions similar to this one but all the adjustments I have tried to make don't seem to fix the check50 failure.
The code seems to run ...
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75
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valgrind Pset5 error
All checks with check50 are green except the memory error.
This is what valgrind shows me:
==3259==
==3259== HEAP SUMMARY:
==3259== in use at exit: 8,013,096 bytes in 143,091 blocks
==3259== ...
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1
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117
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Pset5 speller getting valgrind error
My code
// Implements a dictionary's functionality
#include <stdbool.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <...
0
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1
answer
44
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pset5 speller: valgrind 937 errors from 1 context
I have done check50 and the only error is "valgrind tests failed; rerun with --log for more information". I can't find the source of the memory leak and I thought that my unload made sense. ...
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1
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58
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PSET5: memory leak in check function
bool check(const char *word)
{
unsigned int hash_index = hash(word);
node *trav = table[hash_index];
while (trav != NULL)
{
int len = strlen(trav->word);
char ...
- 15
0
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1
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720
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pset5 valgrind tests failed
I'm very close to completing pset5; all smiley faces except the Valgrind memory leak. I'm hoping someone can help find the problem. I am only leaking 112 bytes and have tried to fix the issue by ...
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0
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1
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123
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pset5 speller - valgrind & case sensitivity
So valgrind has identified line 102 as the potential source of memory leak which is the following within the load function:
node *n = malloc(sizeof(node));
Have I missed freeing up this memory later ...
