new String8, String16 ctors to initialize empty static strings with static linkage
when libutils is statically linked, the ordering of the static
initializer is not guaranteed and therefore it's unsafe to use
empty static strings: e.g.:
static String8 sThisStaticStringIsNotSafe;
instead, this new constructor can be used:
static String8 sThisStaticStringIsSafe(kEmptyString);
Change-Id: Ia3daf1cab1c97d021c0ee9c2b394b5e27e8d6c0d
diff --git a/include/utils/String16.h b/include/utils/String16.h
index 6d4253d..d131bfc 100644
--- a/include/utils/String16.h
+++ b/include/utils/String16.h
@@ -41,7 +41,16 @@
class String16
{
public:
+ /* use String16(StaticLinkage) if you're statically linking against
+ * libutils and declaring an empty static String16, e.g.:
+ *
+ * static String16 sAStaticEmptyString(String16::kEmptyString);
+ * static String16 sAnotherStaticEmptyString(sAStaticEmptyString);
+ */
+ enum StaticLinkage { kEmptyString };
+
String16();
+ explicit String16(StaticLinkage);
String16(const String16& o);
String16(const String16& o,
size_t len,