sigmasternchen/macrofuck
1
0
Fork 0
mirror of https://github.com/sigmasternchen/macrofuck synced 2025-03-15 07:08:56 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

fix: int overflow in hash_string() function results in negative bucket id

Browse source
This commit is contained in:
overflowerror 2024-05-02 17:36:51 +02:00
parent 650e47f693
commit cdc7eab841
2 changed files with 6 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
common/src/dict.c
View file

@ -7,8 +7,8 @@
#include "alloc.h"
#include "list.h"
int hash_string(const char* str) {
int result = 0;
unsigned int hash_string(const char* str) {
unsigned int result = 0;
while (*str != '\0') {
result = *str + 31 * result;
str++;
@ -38,7 +38,7 @@ struct dict_pair* dict_search_in_bucket(dict_bucket_t bucket, const char* key) {
}
dict_bucket_t dict_find_bucket(dict_t* dict, const char* key) {
int hash = hash_string(key);
unsigned int hash = hash_string(key);
return dict->buckets[hash % NUMBER_OF_BUCKETS];
}

3
compiler/test/cases/022-bug-negative-hashkey.in Normal file
View file

@ -0,0 +1,3 @@
var program = "foo\n";
print(program);