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| author | Victor Stinner <vstinner@redhat.com> | 2019-04-11 11:01:15 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-04-11 11:01:15 (GMT) |
| commit | 4c409beb4c360a73d054f37807d3daad58d1b567 (patch) | |
| tree | 03e835b35a2c910cd4793106eee2004212644746 /Include/internal | |
| parent | 536a35b3f14888999f1ffa5be7239d0c26b73d7a (diff) | |
| download | cpython-4c409beb4c360a73d054f37807d3daad58d1b567.zip cpython-4c409beb4c360a73d054f37807d3daad58d1b567.tar.gz cpython-4c409beb4c360a73d054f37807d3daad58d1b567.tar.bz2 | |
bpo-36389: Change PyMem_SetupDebugHooks() constants (GH-12782)
Modify CLEANBYTE, DEADDYTE and FORBIDDENBYTE constants: use 0xCD,
0xDD and 0xFD, rather than 0xCB, 0xBB and 0xFB, to use the same byte
patterns than Windows CRT debug malloc() and free().
Diffstat (limited to 'Include/internal')
| -rw-r--r-- | Include/internal/pycore_pymem.h | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/Include/internal/pycore_pymem.h b/Include/internal/pycore_pymem.h index 78d457d..8da1bd9 100644 --- a/Include/internal/pycore_pymem.h +++ b/Include/internal/pycore_pymem.h @@ -160,21 +160,20 @@ PyAPI_FUNC(int) _PyMem_SetDefaultAllocator( pointer value is checked. The heuristic relies on the debug hooks on Python memory allocators which - fills newly allocated memory with CLEANBYTE (0xCB) and newly freed memory - with DEADBYTE (0xDB). Detect also "untouchable bytes" marked - with FORBIDDENBYTE (0xFB). */ + fills newly allocated memory with CLEANBYTE (0xCD) and newly freed memory + with DEADBYTE (0xDD). Detect also "untouchable bytes" marked + with FORBIDDENBYTE (0xFD). */ static inline int _PyMem_IsPtrFreed(void *ptr) { uintptr_t value = (uintptr_t)ptr; #if SIZEOF_VOID_P == 8 - return (value == (uintptr_t)0xCBCBCBCBCBCBCBCB - || value == (uintptr_t)0xDBDBDBDBDBDBDBDB - || value == (uintptr_t)0xFBFBFBFBFBFBFBFB - ); + return (value == (uintptr_t)0xCDCDCDCDCDCDCDCD + || value == (uintptr_t)0xDDDDDDDDDDDDDDDD + || value == (uintptr_t)0xFDFDFDFDFDFDFDFD); #elif SIZEOF_VOID_P == 4 - return (value == (uintptr_t)0xCBCBCBCB - || value == (uintptr_t)0xDBDBDBDB - || value == (uintptr_t)0xFBFBFBFB); + return (value == (uintptr_t)0xCDCDCDCD + || value == (uintptr_t)0xDDDDDDDD + || value == (uintptr_t)0xFDFDFDFD); #else # error "unknown pointer size" #endif |