ext: Upgrade PyBind11 to version 2.2.1

This upgrade is necessary for pybind to build with GCC 7.2.

We still need to add the patch for stl.h. MSC_FULL_VER change is no longer
needed.
See https://gem5-review.googlesource.com/c/public/gem5/+/2230

Change-Id: I806729217d022070583994c2dfcaa74476aef30f
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/5801
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

1 files changed, 67 insertions, 69 deletions

diff --git a/ext/pybind11/tests/test_smart_ptr.py b/ext/pybind11/tests/test_smart_ptr.py
index b5af3bd38..4dfe0036f 100644
--- a/ext/pybind11/tests/test_smart_ptr.py
+++ b/ext/pybind11/tests/test_smart_ptr.py
@@ -1,40 +1,35 @@
 import pytest
+from pybind11_tests import smart_ptr as m
 from pybind11_tests import ConstructorStats
 
 
 def test_smart_ptr(capture):
     # Object1
-    from pybind11_tests import (MyObject1, make_object_1, make_object_2,
-                                print_object_1, print_object_2, print_object_3, print_object_4)
-
-    for i, o in enumerate([make_object_1(), make_object_2(), MyObject1(3)], start=1):
+    for i, o in enumerate([m.make_object_1(), m.make_object_2(), m.MyObject1(3)], start=1):
         assert o.getRefCount() == 1
         with capture:
-            print_object_1(o)
-            print_object_2(o)
-            print_object_3(o)
-            print_object_4(o)
+            m.print_object_1(o)
+            m.print_object_2(o)
+            m.print_object_3(o)
+            m.print_object_4(o)
         assert capture == "MyObject1[{i}]\n".format(i=i) * 4
 
-    from pybind11_tests import (make_myobject1_1, make_myobject1_2,
-                                print_myobject1_1, print_myobject1_2,
-                                print_myobject1_3, print_myobject1_4)
-
-    for i, o in enumerate([make_myobject1_1(), make_myobject1_2(), MyObject1(6), 7], start=4):
+    for i, o in enumerate([m.make_myobject1_1(), m.make_myobject1_2(), m.MyObject1(6), 7],
+                          start=4):
         print(o)
         with capture:
             if not isinstance(o, int):
-                print_object_1(o)
-                print_object_2(o)
-                print_object_3(o)
-                print_object_4(o)
-            print_myobject1_1(o)
-            print_myobject1_2(o)
-            print_myobject1_3(o)
-            print_myobject1_4(o)
+                m.print_object_1(o)
+                m.print_object_2(o)
+                m.print_object_3(o)
+                m.print_object_4(o)
+            m.print_myobject1_1(o)
+            m.print_myobject1_2(o)
+            m.print_myobject1_3(o)
+            m.print_myobject1_4(o)
         assert capture == "MyObject1[{i}]\n".format(i=i) * (4 if isinstance(o, int) else 8)
 
-    cstats = ConstructorStats.get(MyObject1)
+    cstats = ConstructorStats.get(m.MyObject1)
     assert cstats.alive() == 0
     expected_values = ['MyObject1[{}]'.format(i) for i in range(1, 7)] + ['MyObject1[7]'] * 4
     assert cstats.values() == expected_values
@@ -45,21 +40,16 @@ def test_smart_ptr(capture):
     assert cstats.move_assignments == 0
 
     # Object2
-    from pybind11_tests import (MyObject2, make_myobject2_1, make_myobject2_2,
-                                make_myobject3_1, make_myobject3_2,
-                                print_myobject2_1, print_myobject2_2,
-                                print_myobject2_3, print_myobject2_4)
-
-    for i, o in zip([8, 6, 7], [MyObject2(8), make_myobject2_1(), make_myobject2_2()]):
+    for i, o in zip([8, 6, 7], [m.MyObject2(8), m.make_myobject2_1(), m.make_myobject2_2()]):
         print(o)
         with capture:
-            print_myobject2_1(o)
-            print_myobject2_2(o)
-            print_myobject2_3(o)
-            print_myobject2_4(o)
+            m.print_myobject2_1(o)
+            m.print_myobject2_2(o)
+            m.print_myobject2_3(o)
+            m.print_myobject2_4(o)
         assert capture == "MyObject2[{i}]\n".format(i=i) * 4
 
-    cstats = ConstructorStats.get(MyObject2)
+    cstats = ConstructorStats.get(m.MyObject2)
     assert cstats.alive() == 1
     o = None
     assert cstats.alive() == 0
@@ -71,19 +61,16 @@ def test_smart_ptr(capture):
     assert cstats.move_assignments == 0
 
     # Object3
-    from pybind11_tests import (MyObject3, print_myobject3_1, print_myobject3_2,
-                                print_myobject3_3, print_myobject3_4)
-
-    for i, o in zip([9, 8, 9], [MyObject3(9), make_myobject3_1(), make_myobject3_2()]):
+    for i, o in zip([9, 8, 9], [m.MyObject3(9), m.make_myobject3_1(), m.make_myobject3_2()]):
         print(o)
         with capture:
-            print_myobject3_1(o)
-            print_myobject3_2(o)
-            print_myobject3_3(o)
-            print_myobject3_4(o)
+            m.print_myobject3_1(o)
+            m.print_myobject3_2(o)
+            m.print_myobject3_3(o)
+            m.print_myobject3_4(o)
         assert capture == "MyObject3[{i}]\n".format(i=i) * 4
 
-    cstats = ConstructorStats.get(MyObject3)
+    cstats = ConstructorStats.get(m.MyObject3)
     assert cstats.alive() == 1
     o = None
     assert cstats.alive() == 0
@@ -94,10 +81,8 @@ def test_smart_ptr(capture):
     assert cstats.copy_assignments == 0
     assert cstats.move_assignments == 0
 
-    # Object and ref
-    from pybind11_tests import Object, cstats_ref
-
-    cstats = ConstructorStats.get(Object)
+    # Object
+    cstats = ConstructorStats.get(m.Object)
     assert cstats.alive() == 0
     assert cstats.values() == []
     assert cstats.default_constructions == 10
@@ -106,7 +91,8 @@ def test_smart_ptr(capture):
     assert cstats.copy_assignments == 0
     assert cstats.move_assignments == 0
 
-    cstats = cstats_ref()
+    # ref<>
+    cstats = m.cstats_ref()
     assert cstats.alive() == 0
     assert cstats.values() == ['from pointer'] * 10
     assert cstats.default_constructions == 30
@@ -117,26 +103,30 @@ def test_smart_ptr(capture):
 
 
 def test_smart_ptr_refcounting():
-    from pybind11_tests import test_object1_refcounting
-    assert test_object1_refcounting()
+    assert m.test_object1_refcounting()
 
 
 def test_unique_nodelete():
-    from pybind11_tests import MyObject4
-    o = MyObject4(23)
+    o = m.MyObject4(23)
     assert o.value == 23
-    cstats = ConstructorStats.get(MyObject4)
+    cstats = ConstructorStats.get(m.MyObject4)
     assert cstats.alive() == 1
     del o
-    cstats = ConstructorStats.get(MyObject4)
     assert cstats.alive() == 1  # Leak, but that's intentional
 
 
-def test_shared_ptr_and_references():
-    from pybind11_tests.smart_ptr import SharedPtrRef, A
+def test_large_holder():
+    o = m.MyObject5(5)
+    assert o.value == 5
+    cstats = ConstructorStats.get(m.MyObject5)
+    assert cstats.alive() == 1
+    del o
+    assert cstats.alive() == 0
 
-    s = SharedPtrRef()
-    stats = ConstructorStats.get(A)
+
+def test_shared_ptr_and_references():
+    s = m.SharedPtrRef()
+    stats = ConstructorStats.get(m.A)
     assert stats.alive() == 2
 
     ref = s.ref  # init_holder_helper(holder_ptr=false, owned=false)
@@ -166,10 +156,8 @@ def test_shared_ptr_and_references():
 
 
 def test_shared_ptr_from_this_and_references():
-    from pybind11_tests.smart_ptr import SharedFromThisRef, B
-
-    s = SharedFromThisRef()
-    stats = ConstructorStats.get(B)
+    s = m.SharedFromThisRef()
+    stats = ConstructorStats.get(m.B)
     assert stats.alive() == 2
 
     ref = s.ref  # init_holder_helper(holder_ptr=false, owned=false, bad_wp=false)
@@ -202,21 +190,31 @@ def test_shared_ptr_from_this_and_references():
     del ref, bad_wp, copy, holder_ref, holder_copy, s
     assert stats.alive() == 0
 
+    z = m.SharedFromThisVirt.get()
+    y = m.SharedFromThisVirt.get()
+    assert y is z
 
-def test_move_only_holder():
-    from pybind11_tests.smart_ptr import TypeWithMoveOnlyHolder
 
-    a = TypeWithMoveOnlyHolder.make()
-    stats = ConstructorStats.get(TypeWithMoveOnlyHolder)
+def test_move_only_holder():
+    a = m.TypeWithMoveOnlyHolder.make()
+    stats = ConstructorStats.get(m.TypeWithMoveOnlyHolder)
     assert stats.alive() == 1
     del a
     assert stats.alive() == 0
 
 
 def test_smart_ptr_from_default():
-    from pybind11_tests.smart_ptr import HeldByDefaultHolder
-
-    instance = HeldByDefaultHolder()
+    instance = m.HeldByDefaultHolder()
     with pytest.raises(RuntimeError) as excinfo:
-        HeldByDefaultHolder.load_shared_ptr(instance)
+        m.HeldByDefaultHolder.load_shared_ptr(instance)
     assert "Unable to load a custom holder type from a default-holder instance" in str(excinfo)
+
+
+def test_shared_ptr_gc():
+    """#187: issue involving std::shared_ptr<> return value policy & garbage collection"""
+    el = m.ElementList()
+    for i in range(10):
+        el.add(m.ElementA(i))
+    pytest.gc_collect()
+    for i, v in enumerate(el.get()):
+        assert i == v.value()