MetzNet
/
dfhack
3
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix possible crash due to something modifying the 4 bytes between the sizecheck header and the actual allocated data on 64-bit

develop
Ben Lubar 2020-02-14 17:38:18 -06:00
parent 136accdd64
commit 360e6e9afb
No known key found for this signature in database
GPG Key ID: 92939677AB59EDA4
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
depends/sizecheck/sizecheck.cpp
Unescape Escape View File

@ -24,7 +24,7 @@ void* alloc(size_t n) {
} }
void dealloc(void* addr) { void dealloc(void* addr) {
if (intptr_t(addr) % 32 == 16 && *(size_t*)((uint8_t*)addr - 8) == MAGIC) { if (uintptr_t(addr) % 32 == 16 && *(uint32_t*)((uint8_t*)addr - 8) == MAGIC) {
addr = (void*)((uint8_t*)addr - 16); addr = (void*)((uint8_t*)addr - 16);
} }
free(addr); free(addr);