Use static asan runtime for musl

Use static asan runtimes for musl binaries to match glibc binaries.
The static asan runtime also requires libclang_rt.asan_cxx.a.  Unlike
most other runtimes the asan runtimes need to expose the symbols
from the runtime to allow intercepting calls to malloc, new etc.

Test: m USE_HOST_MUSL=true aidl_unittests && out/host/linux-x86/testcases/aidl_unittests/x86_64/aidl_unittests
Test: sanitize_test.go
Change-Id: I93da03b1c447fbb01f37262e7a465f165c2d5a18
diff --git a/cc/sanitize.go b/cc/sanitize.go
index 72c09fb..d8635e0 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -1539,7 +1539,13 @@
 		runtimeSharedLibrary := ""
 		toolchain := c.toolchain(mctx)
 		if Bool(sanProps.Address) {
-			runtimeSharedLibrary = config.AddressSanitizerRuntimeLibrary(toolchain)
+			if toolchain.Musl() || (c.staticBinary() && toolchain.Bionic()) {
+				// Use a static runtime for musl to match what clang does for glibc.
+				addStaticDeps(config.AddressSanitizerStaticRuntimeLibrary(toolchain), false)
+				addStaticDeps(config.AddressSanitizerCXXStaticRuntimeLibrary(toolchain), false)
+			} else {
+				runtimeSharedLibrary = config.AddressSanitizerRuntimeLibrary(toolchain)
+			}
 		} else if Bool(sanProps.Hwaddress) {
 			if c.staticBinary() {
 				addStaticDeps(config.HWAddressSanitizerStaticLibrary(toolchain), true)