newlib-cygwin/newlib/libc/syscalls/syssbrk.c

/* connector for sbrk */

#include <reent.h>
#include <unistd.h>

extern void *_sbrk_r (struct _reent *, ptrdiff_t);
extern void *_sbrk (ptrdiff_t);

void *
sbrk (incr)
     ptrdiff_t incr;
{
#ifdef REENTRANT_SYSCALLS_PROVIDED
  return _sbrk_r (_REENT, incr);
#else
  return _sbrk (incr);
#endif
}