soong: move -Wimplicit-fallthrough from cflags to cxxflags
The compiler upgrade to r370808 can now check C code for implicit
fallthrough. This is triggering a massive number of warnings throughout
external/ and the rest of the platform.
Revisit enabling this for C another day.
Bug: 139945549
Test: m
Change-Id: I8dfaedab78c6230b46e8a45a9e65106dec363380
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
diff --git a/cc/config/clang.go b/cc/config/clang.go
index 71bea42..b42074b 100644
--- a/cc/config/clang.go
+++ b/cc/config/clang.go
@@ -101,9 +101,6 @@
// not emit the table by default on Android since NDK still uses GNU binutils.
"-faddrsig",
- // -Wimplicit-fallthrough is not enabled by -Wall.
- "-Wimplicit-fallthrough",
-
// Help catch common 32/64-bit errors.
"-Werror=int-conversion",
@@ -138,6 +135,9 @@
}, " "))
pctx.StaticVariable("ClangExtraCppflags", strings.Join([]string{
+ // -Wimplicit-fallthrough is not enabled by -Wall.
+ "-Wimplicit-fallthrough",
+
// Enable clang's thread-safety annotations in libcxx.
// Turn off -Wthread-safety-negative, to avoid breaking projects that use -Weverything.
"-D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS",
