From 7fc40ecb9bd03ec4243c124a30b2952d69a5455adbe76508a97099dfa3edda92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Chv=C3=A1tal?= <tchvatal@suse.com>
Date: Fri, 6 Apr 2018 10:15:40 +0000
Subject: [PATCH] Accepting request 593954 from
 home:marxin:branches:devel:languages:python:Factory

- Add gcc8-miscompilation-fix.patch (boo#1084650).

OBS-URL: https://build.opensuse.org/request/show/593954
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python?expand=0&rev=227
---
 gcc8-miscompilation-fix.patch | 33 +++++++++++++++++++++++++++++++++
 python-base.changes           |  5 +++++
 python-base.spec              |  2 ++
 3 files changed, 40 insertions(+)
 create mode 100644 gcc8-miscompilation-fix.patch

diff --git a/gcc8-miscompilation-fix.patch b/gcc8-miscompilation-fix.patch
new file mode 100644
index 0000000..3c5da6c
--- /dev/null
+++ b/gcc8-miscompilation-fix.patch
@@ -0,0 +1,33 @@
+diff --git a/Include/objimpl.h b/Include/objimpl.h
+index 55e83eced6..aa906144dc 100644
+--- a/Include/objimpl.h
++++ b/Include/objimpl.h
+@@ -248,6 +248,18 @@ PyAPI_FUNC(PyVarObject *) _PyObject_GC_Resize(PyVarObject *, Py_ssize_t);
+ /* for source compatibility with 2.2 */
+ #define _PyObject_GC_Del PyObject_GC_Del
+ 
++/* Former over-aligned definition of PyGC_Head, used to compute the
++   size of the padding for the new version below. */
++union _gc_head;
++union _gc_head_old {
++    struct {
++        union _gc_head *gc_next;
++        union _gc_head *gc_prev;
++        Py_ssize_t gc_refs;
++    } gc;
++    long double dummy;
++};
++
+ /* GC information is stored BEFORE the object structure. */
+ typedef union _gc_head {
+     struct {
+@@ -255,7 +267,8 @@ typedef union _gc_head {
+         union _gc_head *gc_prev;
+         Py_ssize_t gc_refs;
+     } gc;
+-    long double dummy;  /* force worst-case alignment */
++    double dummy;  /* force worst-case alignment */
++    char dummy_padding[sizeof(union _gc_head_old)];
+ } PyGC_Head;
+ 
+ extern PyGC_Head *_PyGC_generation0;
diff --git a/python-base.changes b/python-base.changes
index 73a4f9b..cbc3c08 100644
--- a/python-base.changes
+++ b/python-base.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Apr  6 10:11:22 UTC 2018 - mliska@suse.cz
+
+- Add gcc8-miscompilation-fix.patch (boo#1084650).
+
 -------------------------------------------------------------------
 Tue Feb 20 13:14:27 UTC 2018 - bwiedemann@suse.com
 
diff --git a/python-base.spec b/python-base.spec
index 69106f1..3c823a4 100644
--- a/python-base.spec
+++ b/python-base.spec
@@ -62,6 +62,7 @@ Patch39:        python-fix-shebang.patch
 Patch40:        python-skip_random_failing_tests.patch
 # PATCH-FIX-UPSTREAM sorted tar https://github.com/python/cpython/pull/2263
 Patch41:        python-sorted_tar.patch
+Patch42:        gcc8-miscompilation-fix.patch
 # COMMON-PATCH-END
 %define         python_version    %(echo %{tarversion} | head -c 3)
 BuildRequires:  automake
@@ -170,6 +171,7 @@ other applications.
 %patch40 -p1
 %endif
 %patch41 -p1
+%patch42 -p1
 
 # drop Autoconf version requirement
 sed -i 's/^version_required/dnl version_required/' configure.ac