From b03f929f1e7b6b49f5e0d8c380859b572e30444c Mon Sep 17 00:00:00 2001
From: Sam Clegg <sbc@chromium.org>
Date: Fri, 3 May 2024 17:00:47 -0700
Subject: Revert manual changes to src/prebuilt/lexer-keywords.cc. NFC (#2412)

This file is auto-generated but I had manually edited it #2091.

Instead, disabled the clang fallthrough warnings when including this
file.
---
 src/prebuilt/lexer-keywords.cc | 26 +++++++++++++-------------
 src/wast-lexer.cc              |  7 +++++++
 2 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/src/prebuilt/lexer-keywords.cc b/src/prebuilt/lexer-keywords.cc
index 3712f6ff..0f2f59b8 100644
--- a/src/prebuilt/lexer-keywords.cc
+++ b/src/prebuilt/lexer-keywords.cc
@@ -96,55 +96,55 @@ Perfect_Hash::hash (const char *str, size_t len)
     {
       default:
         hval += asso_values[static_cast<unsigned char>(str[26])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 26:
       case 25:
       case 24:
       case 23:
         hval += asso_values[static_cast<unsigned char>(str[22])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 22:
       case 21:
       case 20:
       case 19:
         hval += asso_values[static_cast<unsigned char>(str[18])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 18:
         hval += asso_values[static_cast<unsigned char>(str[17])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 17:
         hval += asso_values[static_cast<unsigned char>(str[16])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 16:
       case 15:
         hval += asso_values[static_cast<unsigned char>(str[14])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 14:
       case 13:
       case 12:
         hval += asso_values[static_cast<unsigned char>(str[11])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 11:
       case 10:
         hval += asso_values[static_cast<unsigned char>(str[9])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 9:
       case 8:
         hval += asso_values[static_cast<unsigned char>(str[7])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 7:
         hval += asso_values[static_cast<unsigned char>(str[6])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 6:
         hval += asso_values[static_cast<unsigned char>(str[5])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 5:
         hval += asso_values[static_cast<unsigned char>(str[4])];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 4:
       case 3:
         hval += asso_values[static_cast<unsigned char>(str[2]+1)];
-        [[fallthrough]];
+      /*FALLTHROUGH*/
       case 2:
       case 1:
         hval += asso_values[static_cast<unsigned char>(str[0]+1)];
diff --git a/src/wast-lexer.cc b/src/wast-lexer.cc
index bc781589..8f5053ce 100644
--- a/src/wast-lexer.cc
+++ b/src/wast-lexer.cc
@@ -29,7 +29,14 @@ namespace wabt {
 
 namespace {
 
+#if __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wimplicit-fallthrough"
+#endif
 #include "prebuilt/lexer-keywords.cc"
+#if __clang__
+#pragma clang diagnostic pop
+#endif
 
 }  // namespace
 
-- 
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