================
@@ -1302,6 +1302,7 @@ ItaniumRecordLayoutBuilder::LayoutBase(const
BaseSubobjectInfo *Base) {
setSize(std::max(getSize(), Offset + Layout.getSize()));
// Remember max struct/class alignment.
+ UnadjustedAlignment = std::max(UnadjustedAlignment, PreferredBaseAlign);
----------------
efriedma-quic wrote:
Are we supposed to use the alignment of the base class, or the natural
alignment of the base class? I'd like to see testcases for both, and
information about how gcc and msvc interpret that question.
Maybe also open a bug report at https://github.com/ARM-software/abi-aa/issues
for a spec clarification; Arm is usually pretty responsive there.
------
I would also ask if you want BaseAlign vs. PreferredBaseAlign here, but as far
as I can tell, they should be the same on AArch64.
https://github.com/llvm/llvm-project/pull/135564
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