https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95455
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Clang gives:
<source>:5:16: error: reference to local variable 'foo' declared in enclosing
function 'f'
[bar = foo] {};
^
<source>:3:9: note: 'foo' declared here
int foo;
^
