ead9363bee
* add gcc8 patch for python 2.7.14 Change-Id: I48cb5e717577d8158d1f7f1fe270156a01940d8a * add explaining comment Change-Id: Ia46168e2269d7de47d7ec8d0bf9e3b7696ea8e31 * remove unnecessary part of the patch Change-Id: Iee763effe2439f0f160c1547640eca4bb9451a68
36 lines
1.1 KiB
Diff
36 lines
1.1 KiB
Diff
diff --git a/Include/objimpl.h b/Include/objimpl.h
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index 5f2868332955..cbf6bc3f8763 100644
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--- a/Include/objimpl.h
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+++ b/Include/objimpl.h
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@@ -248,6 +248,20 @@ PyAPI_FUNC(PyVarObject *) _PyObject_GC_Resize(PyVarObject *, Py_ssize_t);
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/* for source compatibility with 2.2 */
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#define _PyObject_GC_Del PyObject_GC_Del
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+/*
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+ * Former over-aligned definition of PyGC_Head, used to compute the size of the
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+ * padding for the new version below.
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+ */
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+union _gc_head;
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+union _gc_head_old {
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+ struct {
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+ union _gc_head_old *gc_next;
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+ union _gc_head_old *gc_prev;
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+ Py_ssize_t gc_refs;
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+ } gc;
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+ long double dummy;
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+};
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+
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/* GC information is stored BEFORE the object structure. */
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typedef union _gc_head {
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struct {
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@@ -255,7 +269,8 @@ typedef union _gc_head {
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union _gc_head *gc_prev;
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Py_ssize_t gc_refs;
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} gc;
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- long double dummy; /* force worst-case alignment */
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+ double dummy; /* Force at least 8-byte alignment. */
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+ char dummy_padding[sizeof(union _gc_head_old)];
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} PyGC_Head;
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extern PyGC_Head *_PyGC_generation0;
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