dblaikie added a comment.
In D100581#2730557 <https://reviews.llvm.org/D100581#2730557>, @nickdesaulniers
wrote:
> I see lots of instances from the kernel that look like this when reduced:
>
> $ cat foo.c
> int page;
> int put_page_testzero(int);
> void foo (void) {
> int zeroed;
> zeroed = put_page_testzero(page);
> ((void)(sizeof(( long)(!zeroed))));
> }
> $ clang -c -Wall foo.c
> foo.c:4:7: warning: variable 'zeroed' set but not used
> [-Wunused-but-set-variable]
> int zeroed;
> ^
Any idea what the purpose of this code is/why it's not a reasonable thing to
warn on?
Repository:
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https://reviews.llvm.org/D100581/new/
https://reviews.llvm.org/D100581
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