libc: enable -Wimplicit-fallthrough
libc had some -Wimplicit-fallthrough warnings. They all seem to be
benign. We're trying to enable this flag globally, so we need to
annotate these breaks here.
Bug: 112564944
Test: Builds
Change-Id: I5afae694cc4cf26ad1a61e2c8ae91f00cda7c733
diff --git a/libc/bionic/fdsan.cpp b/libc/bionic/fdsan.cpp
index 43d8831..0f17184 100644
--- a/libc/bionic/fdsan.cpp
+++ b/libc/bionic/fdsan.cpp
@@ -189,6 +189,7 @@
case ANDROID_FDSAN_ERROR_LEVEL_WARN_ONCE:
atomic_compare_exchange_strong(&fd_table->error_level, &error_level,
ANDROID_FDSAN_ERROR_LEVEL_DISABLED);
+ __BIONIC_FALLTHROUGH;
case ANDROID_FDSAN_ERROR_LEVEL_WARN_ALWAYS:
// DEBUGGER_SIGNAL
raise(__SIGRTMIN + 3);