[Bug c++/79328] Wshadow and lambda captures

[arnaud02 at users dot sourceforge.net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79328

Arnaud Desitter <arnaud02 at users dot sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |arnaud02 at users dot sourceforge.
                   |                            |net

--- Comment #3 from Arnaud Desitter <arnaud02 at users dot sourceforge.net> ---
This defect makes -Wshadow=local difficult to use with immediately invoked
lambda expressions. For instance,
gcc 9.2 compiles:
#include <array>
auto f(int s) {
  const auto v = []{
      std::array<int,2> v = {1, 2};
      return v;
  }();
  return v.size();
}
with:
source>: In lambda function:

<source>:4:25: warning: declaration of 'v' shadows a previous local [-Wshadow]

    4 |       std::array<int,2> v = {1, 2};

      |                         ^

<source>:3:14: note: shadowed declaration is here

    3 |   const auto v = []{

      |              ^