https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106552
Bug ID: 106552
Summary: GCC accepts invalid redefinition of captured variable
inside lambda
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jlame646 at gmail dot com
Target Milestone: ---
The following invalid(afaik) program is accepted by gcc:
https://godbolt.org/z/sPozd36oY
int main() {
int x = 100;
auto lamb_var = [y = x](){
int y = 10; //this is accepted by gcc even though this is a
redefinition of y
return y + 1;
};
assert (lamb_var() == 11);
return 0;
}
--------------
In the above program, since we've used `y = x`, this means the non-static data
member will be named `y` and is considered to be in the declarative region of
the lambda expression's compound statement which in turn means that the
statement int y = 10; should produced redefinition error because we're defining
a variable named `y` for the second time in the same region.
