https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87387
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=53129
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Binderman from comment #1)
> I found this bug by compiling gcc with the new clang 7.0
>
> It seems that gcc can't be encouraged to warn about self-assignment.
>
> For example:
>
> $cat sep23a.cc
> // -Wself-assign. clang has it. gcc doesn't.
>
> extern void g( int);
>
> void f(int n)
> {
> int m = 2 * n;
>
> m = m;
>
> g( m);
> }
>
> $ ~/gcc/results/bin/gcc -c -O2 -Wall -Wextra sep23a.cc
> $
>
> Given that this warning finds bugs in gcc itself, would this
> -Wself-assign warning be worth implementing in gcc ?
That's bug 53129.
>
> I'll have a go at compiling the rest of the world with clang-7.0
> and see what it finds.
