IssueTracker

When set the optimization level as 0, the audioflinger has build error.
AOSP code base: android-15.0.0_r6
steps to reproduce the build error:
 - Add "-O0" to cflags of libaudiofinger in frameworks/av/services/audioflinger/Android.bp
 - mmm frameworks/av/services/audioflinger/ -j8

Build errors:
FAILED: out/soong/.intermediates/frameworks/av/services/audioflinger/libaudioflinger/android_arm64_armv8-a_cortex-a53_shared_cfi/unstripped/libaudioflinger.so
ld.lld: error: undefined symbol: _ZTVN7android14IAfEffectChainE

FAILED: out/soong/.intermediates/frameworks/av/services/audioflinger/libaudioflinger/android_arm64_armv8-a_cortex-a53_shared_cfi/unstripped/libaudioflinger.so
ld.lld: error: undefined symbol: _ZN7android14IAfEffectChain14sendMetadata_lERKNSt3__16vectorI26playback_track_metadata_v7NS1_9allocatorIS3_EEEENS1_8optionalIS7_EE
>>> referenced by ld-temp.o
>>>               out/soong/.intermediates/frameworks/av/services/audioflinger/libaudioflinger/android_arm64_armv8-a_cortex-a53_shared_cfi/unstripped/libaudioflinger.so.lto.o:(.data.rel.ro..L__unnamed_1+0x12A0)


I have made below change to workaround the build error：

diff --git a/services/audioflinger/Android.bp b/services/audioflinger/Android.bp
index 01bde420c054..8ce3c8582020 100644
--- a/services/audioflinger/Android.bp
+++ b/services/audioflinger/Android.bp
@@ -251,6 +251,7 @@ cc_library {
     },

     cflags: [
+        "-O0",
         "-Wall",
         "-Werror",
         "-fvisibility=hidden",
diff --git a/services/audioflinger/Effects.cpp b/services/audioflinger/Effects.cpp
index 84505d350257..3ba66183d6e1 100644
--- a/services/audioflinger/Effects.cpp
+++ b/services/audioflinger/Effects.cpp
@@ -2224,6 +2224,9 @@ NO_THREAD_SAFETY_ANALYSIS  // conditional try lock
 #undef LOG_TAG
 #define LOG_TAG "EffectChain"

+IAfEffectChain::~IAfEffectChain() { }
+void IAfEffectChain::sendMetadata_l(const std::vector<playback_track_metadata_v7_t>& allMetadata __unused,
+        const std::optional<const std::vector<playback_track_metadata_v7_t>> spatializedMetadata __unused){ }
 /* static */
 sp<IAfEffectChain> IAfEffectChain::create(
         const sp<IAfThreadBase>& thread,
diff --git a/services/audioflinger/IAfEffect.h b/services/audioflinger/IAfEffect.h
index 3452e9491f2f..64099776a879 100644
--- a/services/audioflinger/IAfEffect.h
+++ b/services/audioflinger/IAfEffect.h
@@ -221,6 +221,7 @@ private:
 class IAfEffectChain : public RefBase {
     // Most of these methods are accessed from AudioFlinger::Thread
 public:
+    virtual ~IAfEffectChain();
     static sp<IAfEffectChain> create(
             const sp<IAfThreadBase>& thread,
             audio_session_t sessionId,