Questions tagged [valgrind]

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Check function Segmentation

I am struggling to find the problem in my check function. I have a segmentation fault that it's position varies every time I alter my code a bit. bool check(const char *word) { int index = hash(...
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Lab 5 valgrind error only with specific variable name

I am currently doing lab 5:Inheritance on CS50. I came across a interesting error. when i create a person object with the name person as follows, //Create a new individual with generations person *...
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Pset5 Speller — Conditional jump or move depends on uninitialised value(s); Uninitialised value was created by a stack allocation;

My code is able to pass all the tests in check50 except the valgrind one. Here is the error when I run the valgrind. Could someone help me, please? // Implements a dictionary's functionality #...
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valgrind memory leak on speller linked list…“blocks are definitely lost…”

I'm working on my memory leaks for the load() function. Valgrind give me the following error message ==1675== HEAP SUMMARY: ==1675== in use at exit: 8,011,640 bytes in 143,065 blocks ==1675== ...
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Only getting 3 frees in Speller

No matter what text I test this with, I only ever get 3 or maybe 4 frees using Valgrind. Any ideas why? /** * Implements a dictionary's functionality. */ #include <stdbool.h> #include "...
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valgrind return memory leaking even after free()

This is a code that I have written based on 2013 Section question. I put free at the getAge() function but it is still returning error after running valgrind through it. I really dont know why. Any ...
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Pset5 Speller (using hash table) unload multiple errors

I have successfully implemented pset5 speller using a hash table, but am facing some residual issues with the unload() function. I am unable to resolve a number of errors that are identified by ...
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Error in my cs50's unload function in pset5 - speller - trie

This my code for dictionary.c but each time i run speller.c i'm getting a segmentation error. I'm not able to understand where my this code is leaking memory! Can anyone help? typedef struct node { ...
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pset5 Speller -load - Valgrind error - “invalid read of size 8”(segmentation fault)

i have been trying to figure this out but need some help! even a hint will do... //trie node typedef struct trie_node { struct trie_node* parent; struct trie_node *child[27]; //check is ...
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Does anyone know how to fix this problem?

this error is in every check50 test. Conditional jump or move depends on uninitialised value(s): (file: dictionary.c, line: 92) Conditional jump or move depends on uninitialised value(s): (file: ...
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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:...
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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 ...
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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 ...
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Pset4 recover not passing check50, but I can see the recovered .jpg files

I have run my program and it works! I get 16 .jpg files, all of which I can see when I open them. When I run check50, however it fails on jpg 000.jpg and 001.jpg through 014.jpg, but not 015.jpg?! ...
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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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1answer
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PSET 5 Speller Failing free memory of errors final check

So i am so close to finally completing this present and i still have some final errors to go through. Valgrind is saying that it is still leaking memory for some reason and i cant find the reason why. ...
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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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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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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....
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invalid read of size 1 — Valgrind error

This is what valgrind is giving. ==7194== Invalid read of size 1 ==7194== at 0x4C2E0F4: strlen (in /usr/lib/valgrind/vgpreload_memcheck- amd64-linux.so) ==7194== by 0x42278F: insert (tries.c:34)...
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896 views

Conditional jump or moves depends on uninitialized values

I am getting the following valerind error. ==9649== Conditional jump or move depends on uninitialised value(s) ==9649== at 0x80493AD: check (dictionary.c:152) ==9649== by 0x8048A6D: main (...
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pset5 valgrind not happy with load (also, using malloc vs calloc on trie)

First, valgrind flags the file pointer at the fopen call, and also the malloc call to the root pointer. It designates both still reachable in loss record. Second, since for pset5 I check for an end ...
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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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Pset4 Speller (valgrind)

// Unloads dictionary from memory, returning true if successful else false bool unload(void) { // TODO node *ptr; while (root) { int last_child; node *tmp; ptr =...
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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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cs50 pset4 speller trie word too long “index 46 out of bounds for type 'char [46]'”. Isn't that handled by the code already written?

My code is giving all the right answers (lalaland.txt), but valgrind says: ==9947== dictionary.c:69:25: runtime error: index 46 out of bounds for type 'char [46]' (and I printf the problem - too ...
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368 views

Pset5 Speller Load - Segmentation Fault - Valgrind error: Invalid read of size 8

this is my first post to this forum so I hope I've followed correct procedure. I get a segmentation fault when I run speller. Valgrind says the problem is "Invalid read of size 8" at line 114 in the ...
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2answers
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Valgrind errors: “invalid read of size 8” and “…uninitialised value” (pset5, speller)

I have basically finished the code, no memory leaking and tests work out fine. However, Valgrind is not happy: Conditional jump or move depends on uninitialised value(s): line 141 This is one of the ...
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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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1answer
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PSET5 Speller using trie memory leak

Could somebody help me identify the cause of the memory leak shown by Valgrind? Check50 says that there are no leaks, for some reason. Here is my code for dictionary.c // Implements a dictionary's ...
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Valgrind uninitialized values pset5

This is my solution for pset5's speller problem, which uploads a dictionary with a hash table and checks an inputed text to find misspelled words. My code works fine when I run, but valgrind says "...
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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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How do I interpret Valgrind to fix this program's segmentation fault?

I was attempting PSet 4's Recover but kept running into a segmentation fault. I tried using Valgrind to debug it but I have no idea of how to interpret the error message. My code: #include <stdio.h&...
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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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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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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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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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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 ...
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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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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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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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1answer
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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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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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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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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 <...
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Speller Valgrind Error

I worked on the speller code for bath 2020 for cs50x course. My code passed all test cases but got stuck at a valgrind error. Im new to this and Im unable to comprehend valgrind logs. Please help ...
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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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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 ...
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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 ...