InlinedVector: Fix control-flow-inregrity warning when using a class

with a vtable

The code is getting the pointer, then constructing it on the next
line. Using reinterpret_cast on this pointer is legal according to
https://clang.llvm.org/docs/ControlFlowIntegrity.html#bad-cast-checking,
but it flags it anyway. The docs say it might be necessary for
`allocate()`-type APIs, and recommends adding them to an ignorelist.

Also note that std::addressof is removed. It is unnecessary since
inlined_data is a char-array.

PiperOrigin-RevId: 550972834
Change-Id: Ib224cec330bb6bcb770296de6c91881f404ef531

1 files changed, 5 insertions, 0 deletions

diff --git a/absl/container/inlined_vector_test.cc b/absl/container/inlined_vector_test.cc
index 6f4625dc..07304518 100644
--- a/absl/container/inlined_vector_test.cc
+++ b/absl/container/inlined_vector_test.cc
@@ -1621,6 +1621,11 @@ TEST(DynamicVec, DynamicVecCompiles) {
   (void)v;
 }
 
+TEST(DynamicVec, CreateNonEmptyDynamicVec) {
+  DynamicVec v(1);
+  EXPECT_EQ(v.size(), 1u);
+}
+
 TEST(AllocatorSupportTest, Constructors) {
   using MyAlloc = CountingAllocator<int>;
   using AllocVec = absl::InlinedVector<int, 4, MyAlloc>;