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From: "tuliom at ascii dot art.br" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/100605] -Wimplicit-fallthrough=5 still recognizes comments
Date: Fri, 14 May 2021 15:55:31 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100605

--- Comment #1 from Tulio Magno Quites Machado Filho <tuliom at ascii dot a=
rt.br> ---
Interestingly, all the 3 warnings are reported when using -save-temps:

$ gcc -c -save-temps -Wimplicit-fallthrough=3D5 -Werror=3Dimplicit-fallthro=
ugh t.c=20
t.c: In function =E2=80=98foo=E2=80=99:
t.c:12:9: error: this statement may fall through
[-Werror=3Dimplicit-fallthrough=3D]
   12 |       k =3D 3;
      |       ~~^~~
t.c:14:5: note: here
   14 |     case 2:
      |     ^~~~
t.c:15:9: error: this statement may fall through
[-Werror=3Dimplicit-fallthrough=3D]
   15 |       k =3D 8;
      |       ~~^~~
t.c:16:5: note: here
   16 |     case 1:
      |     ^~~~
t.c:17:9: error: this statement may fall through
[-Werror=3Dimplicit-fallthrough=3D]
   17 |       k =3D 16;
      |       ~~^~~~
t.c:18:5: note: here
   18 |     case 0:
      |     ^~~~
cc1: some warnings being treated as errors=