3party/mimalloc
0
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2024-12-27 13:33:18 +08:00
Code Issues Projects Releases Wiki Activity

add pointer validity check on malloc_size when overriding on macOSX; issue #638

Browse Source
This commit is contained in:
Daan 2022-11-25 16:38:20 -08:00
parent 2d79ae7ecf
commit 8098040c23
2 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/alloc-override.c
View File

@ -51,11 +51,17 @@ typedef struct mi_nothrow_s { int _tag; } mi_nothrow_t;
#define MI_FORWARD02(fun,x,y) { fun(x,y); }
#endif
#if defined(__APPLE__) && defined(MI_SHARED_LIB_EXPORT) && defined(MI_OSX_INTERPOSE)
// define MI_OSX_IS_INTERPOSED as we should not provide forwarding definitions for
// functions that are interposed (or the interposing does not work)
#define MI_OSX_IS_INTERPOSED
mi_decl_externc static size_t mi_malloc_size_checked(void *p) {
if (!mi_is_in_heap_region(p)) return 0;
return mi_usable_size(p);
}
// use interposing so `DYLD_INSERT_LIBRARIES` works without `DYLD_FORCE_FLAT_NAMESPACE=1`
// See: <https://books.google.com/books?id=K8vUkpOXhN4C&pg=PA73>
struct mi_interpose_s {
@ -76,7 +82,7 @@ typedef struct mi_nothrow_s { int _tag; } mi_nothrow_t;
MI_INTERPOSE_MI(posix_memalign),
MI_INTERPOSE_MI(reallocf),
MI_INTERPOSE_MI(valloc),
MI_INTERPOSE_MI(malloc_size),
MI_INTERPOSE_FUN(malloc_size,mi_malloc_size_checked),
MI_INTERPOSE_MI(malloc_good_size),
#if defined(MAC_OS_X_VERSION_10_15) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_15
MI_INTERPOSE_MI(aligned_alloc),

4
src/alloc-posix.c
View File

@ -33,12 +33,12 @@ terms of the MIT license. A copy of the license can be found in the file
mi_decl_nodiscard size_t mi_malloc_size(const void* p) mi_attr_noexcept {
//if (!mi_is_in_heap_region(p)) return 0;
// if (!mi_is_in_heap_region(p)) return 0;
return mi_usable_size(p);
}
mi_decl_nodiscard size_t mi_malloc_usable_size(const void *p) mi_attr_noexcept {
//if (!mi_is_in_heap_region(p)) return 0;
// if (!mi_is_in_heap_region(p)) return 0;
return mi_usable_size(p);
}