commit 7462595989da41d6e230f87b5b9746ac5e893e84
author Chih-Hung Hsieh <chh@google.com> Thu Sep 13 11:08:41 2018 -0700
committer Chih-hung Hsieh <chh@google.com> Mon Sep 17 16:50:11 2018 +0000
tree a539863c9a97600ab956544e377dbaedd7cc001e
parent a0e9ad10cb34f30de599e28e86e7f28f01039102

Suppress implicit-fallthrough warnings.

Add FALLTHROUGH_INTENDED for clang compiler.

Bug: 112564944
Test: build with global -Wimplicit-fallthrough.
Change-Id: I40f8bbf94e207c9dd90921e9b762ba51abab5777

include/android-base/macros.h

diff --git a/include/android-base/macros.h b/include/android-base/macros.h
index 49cc0c9..1748665 100644
--- a/include/android-base/macros.h
+++ b/include/android-base/macros.h
@@ -170,7 +170,9 @@
 //
 //  In either case this macro has no effect on runtime behavior and performance
 //  of code.
+#ifndef FALLTHROUGH_INTENDED
 #define FALLTHROUGH_INTENDED [[clang::fallthrough]]  // NOLINT
+#endif
 
 // Current ABI string
 #if defined(__arm__)