diff options
| author | Neil Schemenauer <nas-github@arctrix.com> | 2021-10-21 13:38:36 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-10-21 13:38:36 (GMT) |
| commit | 311910b31a4bd94dc79298388b7cb65ca5546438 (patch) | |
| tree | 233dded5ff6cd6899c0524e44a29a8059e8ff776 /Objects/obmalloc.c | |
| parent | 9942f42a93ccda047fd3558c47b822e99afe10c0 (diff) | |
| download | cpython-311910b31a4bd94dc79298388b7cb65ca5546438.zip cpython-311910b31a4bd94dc79298388b7cb65ca5546438.tar.gz cpython-311910b31a4bd94dc79298388b7cb65ca5546438.tar.bz2 | |
bpo-45521: Fix a bug in the obmalloc radix tree code. (GH-29051)
MAP_BOT_LENGTH was incorrectly used to compute MAP_TOP_MASK instead of
MAP_TOP_LENGTH. On 64-bit machines, the error causes the tree to hold
46-bits of virtual addresses, rather than the intended 48-bits.
Diffstat (limited to 'Objects/obmalloc.c')
| -rw-r--r-- | Objects/obmalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c index d8d6f6d..2eddb2c 100644 --- a/Objects/obmalloc.c +++ b/Objects/obmalloc.c @@ -1341,7 +1341,7 @@ _Py_GetAllocatedBlocks(void) #define MAP_TOP_BITS INTERIOR_BITS #define MAP_TOP_LENGTH (1 << MAP_TOP_BITS) -#define MAP_TOP_MASK (MAP_BOT_LENGTH - 1) +#define MAP_TOP_MASK (MAP_TOP_LENGTH - 1) #define MAP_MID_BITS INTERIOR_BITS #define MAP_MID_LENGTH (1 << MAP_MID_BITS) |