jfb marked an inline comment as done.
jfb added inline comments.
================
Comment at: clang/include/clang/Basic/DiagnosticFrontendKinds.td:264
+def warn_union_tail_padding_uninitialized : Warning<
+ "Initializing union %0 field %1 only initializes the first %2 of %3 bytes,
leaving the remaining %4 bytes undefined">,
+ InGroup<UnionTailPadding>;
----------------
Something which I'm not sure matters:
```
union Unnamed {
union {
int i;
float f;
};
char bytes[8];
};
union Unnamed unnamed = { 42 };
```
Will generate the following diagnostic:
```
warning: Initializing union 'Unnamed' field '' only initializes the first 4 of
8 bytes, leaving the remaining 4 bytes undefined [-Wunion-tail-padding]
union Unnamed unnamed = { 42 };
^
```
I think that's generally how we handle unnamed members anyways?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D80055/new/
https://reviews.llvm.org/D80055
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