commit c0e77364ca29df6cfb311e79892955c92bd8e595
author Victor Stinner <victor.stinner@gmail.com> Tue Sep 12 16:09:44 2017 -0700
committer GitHub <noreply@github.com> Tue Sep 12 16:09:44 2017 -0700
tree 17f4a3d23ff42877420078441f2534d427fb21c0
parent 5013a5ebc9978a58435036fa3860c465882c21da

[3.6] bpo-30923: Silence fall-through warnings included in -Wextra since gcc-7.0 (#3518)

* bpo-30923: Disable warning that has been part of -Wextra since gcc-7.0. (#3142)

(cherry picked from commit d73a960c575207539c3f9765cff26d4fff400b45)

* bpo-30923: Silence fall-through warnings included in -Wextra since gcc-7.0. (#3157)

(cherry picked from commit f432a3234f9f2ee09bd40be03e06bf72865ee375)

* bpo-31275: Small refactoring to silence a fall-through warning. (#3206)

(cherry picked from commit 138753c1b96b5e06a5c5d409fa4cae5e2fe1108b)

Python/wordcode_helpers.h

diff --git a/Python/wordcode_helpers.h b/Python/wordcode_helpers.h
index b0e3a91..cce81c1 100644
--- a/Python/wordcode_helpers.h
+++ b/Python/wordcode_helpers.h
@@ -28,10 +28,13 @@
     switch (ilen) {
         case 4:
             *codestr++ = PACKOPARG(EXTENDED_ARG, (oparg >> 24) & 0xff);
+            /* fall through */
         case 3:
             *codestr++ = PACKOPARG(EXTENDED_ARG, (oparg >> 16) & 0xff);
+            /* fall through */
         case 2:
             *codestr++ = PACKOPARG(EXTENDED_ARG, (oparg >> 8) & 0xff);
+            /* fall through */
         case 1:
             *codestr++ = PACKOPARG(opcode, oparg & 0xff);
             break;