https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117536
Bug ID: 117536
Summary: -Wshadow generates an incorrect warning with some
usages of immediately invoked lambdas
Product: gcc
Version: 14.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: justus at opentransactions dot org
Target Milestone: ---
struct my_type {};
my_type get_value();
void init_value(my_type&);
int main()
{
const auto my_var = [] {
auto my_var = get_value();
init_value(my_var);
return my_var;
}();
return 0;
}
<source>: In lambda function:
<source>:9:14: error: declaration of 'my_var' shadows a previous local
[-Werror=shadow]
9 | auto my_var = get_value();
| ^~~~~~
This is a bogus warning because neither usage of my_var is in scope at the same
time.
The scope for the other my_var doesn't begin until the scope of all the
variables in the immediately-invoked lambda ends.
