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| author | T. Wouters <thomas@python.org> | 2017-03-31 17:10:19 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-03-31 17:10:19 (GMT) |
| commit | 06bb4873d6a9ac303701d08a851d6cd9a51e02a3 (patch) | |
| tree | 9702ec5165c8b180226b8932566137873709c7d9 /Objects | |
| parent | a00c3fd12d421e41b769debd7df717d17b0deed5 (diff) | |
| download | cpython-06bb4873d6a9ac303701d08a851d6cd9a51e02a3.zip cpython-06bb4873d6a9ac303701d08a851d6cd9a51e02a3.tar.gz cpython-06bb4873d6a9ac303701d08a851d6cd9a51e02a3.tar.bz2 | |
Fix spurious MemoryError introduced by PR #886. (#930)
Fix MemoryError caused by moving around code in PR #886; nbytes was sometimes used unitinitalized (in non-debug builds, when use_calloc was false and elsize was 0).
Diffstat (limited to 'Objects')
| -rw-r--r-- | Objects/obmalloc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c index f284d9f..32e7ecb 100644 --- a/Objects/obmalloc.c +++ b/Objects/obmalloc.c @@ -1227,10 +1227,7 @@ _PyObject_Alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize) _Py_AllocatedBlocks++; - if (nelem == 0 || elsize == 0) - goto redirect; - - assert(nelem <= PY_SSIZE_T_MAX / elsize); + assert(elsize == 0 || nelem <= PY_SSIZE_T_MAX / elsize); nbytes = nelem * elsize; #ifdef WITH_VALGRIND @@ -1240,6 +1237,9 @@ _PyObject_Alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize) goto redirect; #endif + if (nelem == 0 || elsize == 0) + goto redirect; + if ((nbytes - 1) < SMALL_REQUEST_THRESHOLD) { LOCK(); /* |