RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-28 16:35:08 +00:00
Code Issues Activity Actions

LibC: Fix busted realloc() implementation.

Browse source
This commit is contained in:
Andreas Kling 2019-02-15 22:36:59 +01:00
parent df6aaaeeef
commit 3b42db0b4c
1 changed files with 5 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
LibC/stdlib.cpp
View file

@ -9,6 +9,7 @@
#include <AK/Assertions.h>
#include <AK/Types.h>
#include <Kernel/Syscall.h>
#include <AK/StdLibExtras.h>
extern "C" {
@ -160,8 +161,11 @@ void* realloc(void *ptr, size_t size)
validate_mallocation(ptr, "realloc()");
auto* header = (MallocHeader*)((((byte*)ptr) - sizeof(MallocHeader)));
size_t old_size = header->size;
if (size == old_size)
return ptr;
auto* new_ptr = malloc(size);
memcpy(new_ptr, ptr, old_size);
memcpy(new_ptr, ptr, min(old_size, size));
free(ptr);
return new_ptr;
}