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LibC: Fix strndup 

I did not null terminate short strndup copies :D
This commit is contained in:
Bananymous 2025-01-28 22:40:06 +02:00
parent d1c3d3d5aa
commit 17014bb8de
1 changed files with 7 additions and 6 deletions
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13
userspace/libraries/LibC/string.cpp
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@ -189,27 +189,28 @@ int strcoll(const char* s1, const char* s2)
char* strdup(const char* str) char* strdup(const char* str)
{ {
const size_t size = strlen(str) + 1; const size_t size = strlen(str);
char* new_str = (char*)malloc(size); char* new_str = (char*)malloc(size + 1);
if (new_str == nullptr) if (new_str == nullptr)
return nullptr; return nullptr;
memcpy(new_str, str, size); memcpy(new_str, str, size);
new_str[size] = '\0';
return new_str; return new_str;
} }
char* strndup(const char* str, size_t size) char* strndup(const char* str, size_t size)
{ {
if (strlen(str) < size) if (size_t len = strlen(str); len < size)
size = strlen(str); size = len;
size += 1;
char* new_str = (char*)malloc(size); char* new_str = (char*)malloc(size + 1);
if (new_str == nullptr) if (new_str == nullptr)
return nullptr; return nullptr;
memcpy(new_str, str, size); memcpy(new_str, str, size);
new_str[size] = '\0';
return new_str; return new_str;
} }