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| author | Gregory P. Smith <greg@mad-scientist.com> | 2008-07-22 04:46:32 (GMT) |
|---|---|---|
| committer | Gregory P. Smith <greg@mad-scientist.com> | 2008-07-22 04:46:32 (GMT) |
| commit | 0470bab69783c13447cb634fa403ef1067fe56d1 (patch) | |
| tree | 8930faf64b2224f282512ff18a41bb0b338beded /Doc/c-api | |
| parent | f5574a0c290aac0ec581415fdd343641c00d5d42 (diff) | |
| download | cpython-0470bab69783c13447cb634fa403ef1067fe56d1.zip cpython-0470bab69783c13447cb634fa403ef1067fe56d1.tar.gz cpython-0470bab69783c13447cb634fa403ef1067fe56d1.tar.bz2 | |
Issue #2620: Overflow checking when allocating or reallocating memory
was not always being done properly in some python types and extension
modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
all been updated to perform better checks and places in the code that
would previously leak memory on the error path when such an allocation
failed have been fixed.
Diffstat (limited to 'Doc/c-api')
| -rw-r--r-- | Doc/c-api/memory.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Doc/c-api/memory.rst b/Doc/c-api/memory.rst index 1dcb115..81d7cd9 100644 --- a/Doc/c-api/memory.rst +++ b/Doc/c-api/memory.rst @@ -136,7 +136,9 @@ The following type-oriented macros are provided for convenience. Note that Same as :cfunc:`PyMem_Realloc`, but the memory block is resized to ``(n * sizeof(TYPE))`` bytes. Returns a pointer cast to :ctype:`TYPE\*`. On return, - *p* will be a pointer to the new memory area, or *NULL* in the event of failure. + *p* will be a pointer to the new memory area, or *NULL* in the event of + failure. This is a C preprocessor macro; p is always reassigned. Save + the original value of p to avoid losing memory when handling errors. .. cfunction:: void PyMem_Del(void *p) |