kiper220/mimalloc
1
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2025-05-04 22:49:32 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

fix ub on shift, issue #279

Browse source
This commit is contained in:
daan 2020-07-25 19:33:02 -07:00
parent a9a21f39d8
commit afe29cb8f5
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
include/mimalloc-internal.h
View file

@ -574,11 +574,11 @@ static inline bool mi_is_in_same_page(const void* p, const void* q) {
static inline uintptr_t mi_rotl(uintptr_t x, uintptr_t shift) {
shift %= MI_INTPTR_BITS;
return ((x << shift) | (x >> (MI_INTPTR_BITS - shift)));
return (shift==0 ? x : ((x << shift) | (x >> (MI_INTPTR_BITS - shift))));
}
static inline uintptr_t mi_rotr(uintptr_t x, uintptr_t shift) {
shift %= MI_INTPTR_BITS;
return ((x >> shift) | (x << (MI_INTPTR_BITS - shift)));
return (shift==0 ? x : ((x >> shift) | (x << (MI_INTPTR_BITS - shift))));
}
static inline void* mi_ptr_decode(const void* null, const mi_encoded_t x, const uintptr_t* keys) {