The deprecated headers have always had only the POSIX definition
available (and it's always been available). With the unified headers
as they are now, we actually make it unavailable for C++ users (C++
implies _GNU_SOURCE) targeting below M. Adding this guard means that
pre-M users will still at least get the POSIX one.
It's not great that moving to M as your target API will actually
change the signature of your strerror_r, but I don't see a better
option here (not until we have the compatibility library, anyway).
Test: make checkbuild
Bug: None
Change-Id: I2d15702467533a826c4ec10fd973ee929d2b562a
char* strerror(int);
char* strerror_l(int, locale_t) __INTRODUCED_IN(23);
-#if defined(__USE_GNU)
+#if defined(__USE_GNU) && __ANDROID_API__ >= 23
char* strerror_r(int, char*, size_t) __RENAME(__gnu_strerror_r) __INTRODUCED_IN(23);
#else /* POSIX */
int strerror_r(int, char*, size_t);