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authorBenjamin Peterson <benjamin@python.org>2014-03-14 20:15:29 -0500
committerBenjamin Peterson <benjamin@python.org>2014-03-14 20:15:29 -0500
commitbdc4b02985e5d50301c554cb58b7f0ad24b1f68b (patch)
treed520a00812426dd1d9868649bec7976e43a75df1 /Include/objimpl.h
parent21b391c956c22246b137248e9cadf4cd436f1ac5 (diff)
downloadcpython3-bdc4b02985e5d50301c554cb58b7f0ad24b1f68b.tar.gz
cast negative numbers to size_t before shifting them (#20929)
Diffstat (limited to 'Include/objimpl.h')
-rw-r--r--Include/objimpl.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/Include/objimpl.h b/Include/objimpl.h
index 9a27ec384f..3f21b70e07 100644
--- a/Include/objimpl.h
+++ b/Include/objimpl.h
@@ -265,7 +265,7 @@ extern PyGC_Head *_PyGC_generation0;
#define _PyGCHead_REFS(g) ((g)->gc.gc_refs >> _PyGC_REFS_SHIFT)
#define _PyGCHead_SET_REFS(g, v) do { \
(g)->gc.gc_refs = ((g)->gc.gc_refs & ~_PyGC_REFS_MASK) \
- | (v << _PyGC_REFS_SHIFT); \
+ | (((size_t)(v)) << _PyGC_REFS_SHIFT); \
} while (0)
#define _PyGCHead_DECREF(g) ((g)->gc.gc_refs -= 1 << _PyGC_REFS_SHIFT)