[Bug c++/104379] New: [p/10/11/12 Regression] -Wshadow warning given three times

["redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104379

            Bug ID: 104379
           Summary: [p/10/11/12 Regression] -Wshadow warning given three
                    times
           Product: gcc
           Version: 11.2.1
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
  Target Milestone: ---

struct S {
  int x;
  S(int x) { (void)x; }
};


shad.C: In constructor 'S::S(int)':
shad.C:3:12: warning: declaration of 'x' shadows a member of 'S' [-Wshadow]
    3 |   S(int x) { (void)x; }
      |            ^
shad.C:2:7: note: shadowed declaration is here
    2 |   int x;
      |       ^
shad.C: In constructor 'S::S(int)':
shad.C:3:23: warning: declaration of 'x' shadows a member of 'S' [-Wshadow]
    3 |   S(int x) { (void)x; }
      |                       ^
shad.C:2:7: note: shadowed declaration is here
    2 |   int x;
      |       ^
shad.C: In constructor 'S::S(int)':
shad.C:3:23: warning: declaration of 'x' shadows a member of 'S' [-Wshadow]
    3 |   S(int x) { (void)x; }
      |                       ^
shad.C:2:7: note: shadowed declaration is here
    2 |   int x;
      |       ^