xmengnet/hello-algo
1
0
Fork 0
mirror of https://github.com/krahets/hello-algo.git synced 2024-12-25 01:06:30 +08:00
Code Issues Projects Releases Packages Wiki Activity Actions

fix(c): Fix malloc allocation of secondary pointers can lead to dump issues (#1367)

Browse source
This commit is contained in:
Lanjing Gong 2024-05-18 18:17:33 +08:00 committed by GitHub
parent 9afbc9eda5
commit 0e221540a3
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
codes/c/chapter_hashing/hash_map_open_addressing.c
View file

@ -32,7 +32,7 @@ HashMapOpenAddressing *newHashMapOpenAddressing() {
hashMap->capacity = 4; hashMap->capacity = 4;
hashMap->loadThres = 2.0 / 3.0; hashMap->loadThres = 2.0 / 3.0;
hashMap->extendRatio = 2; hashMap->extendRatio = 2;
hashMap->buckets = (Pair **)malloc(sizeof(Pair *) * hashMap->capacity); hashMap->buckets = (Pair **)calloc(hashMap->capacity, sizeof(Pair *));
hashMap->TOMBSTONE = (Pair *)malloc(sizeof(Pair)); hashMap->TOMBSTONE = (Pair *)malloc(sizeof(Pair));
hashMap->TOMBSTONE->key = -1; hashMap->TOMBSTONE->key = -1;
hashMap->TOMBSTONE->val = "-1"; hashMap->TOMBSTONE->val = "-1";
@ -151,7 +151,7 @@ void extend(HashMapOpenAddressing *hashMap) {
int oldCapacity = hashMap->capacity; int oldCapacity = hashMap->capacity;
// 初始化扩容后的新哈希表 // 初始化扩容后的新哈希表
hashMap->capacity *= hashMap->extendRatio; hashMap->capacity *= hashMap->extendRatio;
hashMap->buckets = (Pair **)malloc(sizeof(Pair *) * hashMap->capacity); hashMap->buckets = (Pair **)calloc(hashMap->capacity, sizeof(Pair *));
hashMap->size = 0; hashMap->size = 0;
// 将键值对从原哈希表搬运至新哈希表 // 将键值对从原哈希表搬运至新哈希表
for (int i = 0; i < oldCapacity; i++) { for (int i = 0; i < oldCapacity; i++) {

4
zh-hant/codes/c/chapter_hashing/hash_map_open_addressing.c
View file

@ -32,7 +32,7 @@ HashMapOpenAddressing *newHashMapOpenAddressing() {
hashMap->capacity = 4; hashMap->capacity = 4;
hashMap->loadThres = 2.0 / 3.0; hashMap->loadThres = 2.0 / 3.0;
hashMap->extendRatio = 2; hashMap->extendRatio = 2;
hashMap->buckets = (Pair **)malloc(sizeof(Pair *) * hashMap->capacity); hashMap->buckets = (Pair **)calloc(hashMap->capacity, sizeof(Pair *));
hashMap->TOMBSTONE = (Pair *)malloc(sizeof(Pair)); hashMap->TOMBSTONE = (Pair *)malloc(sizeof(Pair));
hashMap->TOMBSTONE->key = -1; hashMap->TOMBSTONE->key = -1;
hashMap->TOMBSTONE->val = "-1"; hashMap->TOMBSTONE->val = "-1";
@ -151,7 +151,7 @@ void extend(HashMapOpenAddressing *hashMap) {
int oldCapacity = hashMap->capacity; int oldCapacity = hashMap->capacity;
// 初始化擴容後的新雜湊表 // 初始化擴容後的新雜湊表
hashMap->capacity *= hashMap->extendRatio; hashMap->capacity *= hashMap->extendRatio;
hashMap->buckets = (Pair **)malloc(sizeof(Pair *) * hashMap->capacity); hashMap->buckets = (Pair **)calloc(hashMap->capacity, sizeof(Pair *));
hashMap->size = 0; hashMap->size = 0;
// 將鍵值對從原雜湊表搬運至新雜湊表 // 將鍵值對從原雜湊表搬運至新雜湊表
for (int i = 0; i < oldCapacity; i++) { for (int i = 0; i < oldCapacity; i++) {