#endif
#ifdef USE_PERL_SBRK
-#define sbrk(a) Perl_sbrk(a)
+# define sbrk(a) Perl_sbrk(a)
Malloc_t Perl_sbrk (int size);
-#else
-#ifdef DONT_DECLARE_STD
-#ifdef I_UNISTD
-#include <unistd.h>
-#endif
#else
+# ifndef HAS_SBRK_PROTO /* <unistd.h> usually takes care of this */
extern Malloc_t sbrk(int);
-#endif
+# endif
#endif
#ifdef DEBUGGING_MSTATS