TaWeiTu added a comment.
In D98548#2625593 <https://reviews.llvm.org/D98548#2625593>, @tmatheson wrote:
> This seems quite an early point to bail out, so it will prevent some
> errors/warnings associated with initialization from being emitted. For
> example, this warning is currently emitted but would be suppressed by this
> patch:
>
> union {
> virtual int a();
> int b = 'c'; // expected-warning {{in-class initialization of non-static
> data member is a C++11 extension [-Wc++11-extensions]}}
> }
>
> I don't know how much that matters seeing as the union is invalid by this
> point.
Hi,
Thanks for the comment!
I understand the problem, but the warning you mentioned is not suppressed in
this patch from what I've seen.
After poking around, I saw that diagnostics related to anonymous unions are all
emitted in another call to `ActOnUninitializedDecl` in the parser, which takes
place before this check.
If I completely remove this call to `ActOnUninitializedDecl` (on line 5215 to
be specific), all the failed testcases seem to be related to CodeGen, so I
suspect that removing this call for invalid unions will not suppress further
warnings/errors.
What do you think?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D98548/new/
https://reviews.llvm.org/D98548
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