Remove compiler warnings when building Bionic.
Also add missing declarations to misc. functions.
Fix clearerr() implementation (previous was broken).
Handle feature test macros like _POSIX_C_SOURCE properly.
Change-Id: Icdc973a6b9d550a166fc2545f727ea837fe800c4
diff --git a/libc/include/wchar.h b/libc/include/wchar.h
index df456ef..9b744a5 100644
--- a/libc/include/wchar.h
+++ b/libc/include/wchar.h
@@ -72,7 +72,7 @@
#define WCHAR_MAX INT_MAX
#define WCHAR_MIN INT_MIN
-#define WEOF ((wchar_t)(-1))
+#define WEOF ((wint_t)(-1))
extern wint_t btowc(int);
extern int fwprintf(FILE *, const wchar_t *, ...);