external/python3/python-3.3.3-disable-obmalloc.patch.0 | 11 +++++++++++
1 file changed, 11 insertions(+)
New commits:
commit 67466a19752d73540e13697b91ca58429f6a64ac
Author: Stephan Bergmann <sberg...@redhat.com>
Date: Tue Oct 27 10:06:36 2015 +0100
Fix Python 3.5 sizeof(PyGC_Head) for UBSan
...by again using 'long double' instead of 'double' to "force worst-case
alignment," just like Python 3.3 used to do. This fixes
-fsanitize=alignment
failures like
> workdir/UnpackedTarball/python3/Modules/_ctypes/_ctypes.c:2923:10:
runtime error: member access within misaligned address 0x6110007af498 for type
'CDataObject' (aka 'struct tagCDataObject'), which requires 16 byte alignment
> 0x6110007af498: note: pointer points here
> ff ff ff ff 01 00 00 00 00 00 00 00 98 98 17 00 90 61 00 00 00 00 00
00 00 00 00 00 00 00 00 00
> ^
> GenericPyCData_new
workdir/UnpackedTarball/python3/Modules/_ctypes/_ctypes.c:2923:10
> PyCFuncPtr_new
workdir/UnpackedTarball/python3/Modules/_ctypes/_ctypes.c:3385:29
> type_call workdir/UnpackedTarball/python3/Objects/typeobject.c:908:11
> [...]
during PythonTest_dbaccess_python.
Change-Id: I8cc65823e1bc65807ec30c97a9099462e55c996d
diff --git a/external/python3/python-3.3.3-disable-obmalloc.patch.0
b/external/python3/python-3.3.3-disable-obmalloc.patch.0
index 3b3abd0..a162298 100644
--- a/external/python3/python-3.3.3-disable-obmalloc.patch.0
+++ b/external/python3/python-3.3.3-disable-obmalloc.patch.0
@@ -1,3 +1,14 @@
+--- Include/objimpl.h
++++ Include/objimpl.h
+@@ -250,7 +250,7 @@
+ union _gc_head *gc_prev;
+ Py_ssize_t gc_refs;
+ } gc;
+- double dummy; /* force worst-case alignment */
++ long double dummy; /* force worst-case alignment */
+ } PyGC_Head;
+
+ extern PyGC_Head *_PyGC_generation0;
--- Objects/obmalloc.c
+++ Objects/obmalloc.c
@@ -413,8 +413,8 @@
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