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| author | Gregory P. Smith <greg@mad-scientist.com> | 2008-06-11 07:41:16 (GMT) |
|---|---|---|
| committer | Gregory P. Smith <greg@mad-scientist.com> | 2008-06-11 07:41:16 (GMT) |
| commit | 9d53457e599623fbad90833c3448835b42d7e7f9 (patch) | |
| tree | 41d37b556618eb8e831463c576d854063a33d77b /Objects/obmalloc.c | |
| parent | 73baefd7fc86a7f8336e4142efcec74c201acf8f (diff) | |
| download | cpython-9d53457e599623fbad90833c3448835b42d7e7f9.zip cpython-9d53457e599623fbad90833c3448835b42d7e7f9.tar.gz cpython-9d53457e599623fbad90833c3448835b42d7e7f9.tar.bz2 | |
Merge in release25-maint r60793:
Added checks for integer overflows, contributed by Google. Some are
only available if asserts are left in the code, in cases where they
can't be triggered from Python code.
Diffstat (limited to 'Objects/obmalloc.c')
| -rw-r--r-- | Objects/obmalloc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c index 2f2b35e..efbd566 100644 --- a/Objects/obmalloc.c +++ b/Objects/obmalloc.c @@ -526,9 +526,9 @@ new_arena(void) numarenas = maxarenas ? maxarenas << 1 : INITIAL_ARENA_OBJECTS; if (numarenas <= maxarenas) return NULL; /* overflow */ - nbytes = numarenas * sizeof(*arenas); - if (nbytes / sizeof(*arenas) != numarenas) + if (numarenas > PY_SIZE_MAX / sizeof(*arenas)) return NULL; /* overflow */ + nbytes = numarenas * sizeof(*arenas); arenaobj = (struct arena_object *)realloc(arenas, nbytes); if (arenaobj == NULL) return NULL; |