_sbrk(): Return -1 rather than aborting if too much memory is requested.

newlib/ChangeLog

@@ -1,3 +1,8 @@
+2002-01-17  Nick Clifton  <nickc@cambridge.redhat.com>
+
+	* libc/sys/arm/syscalls.c (_sbrk): Return -1 rather than aborting
+	if too much memory is requested.
+
 2002-01-11 Jeff Johnston  <jjohnstn@redhat.com>
 
 	* libc/stdio/vfscanf.c (__svfscanf_r): Change loop that

newlib/libc/sys/arm/syscalls.c

@@ -470,8 +470,6 @@ _getpid (int n)
   n = n;
 }
 
-extern void abort (void);
-
 caddr_t
 _sbrk (int incr)
 {
@@ -486,8 +484,18 @@ _sbrk (int incr)
   
   if (heap_end + incr > stack_ptr)
     {
+      /* Some of the libstdc++-v3 tests rely upon detecting
+	 out of memory errors, so do not abort here.  */
+#if 0
+      extern void abort (void);
+
       _write (1, "_sbrk: Heap and stack collision\n", 32);
+      
       abort ();
+#else
+      errno = ENOMEM;
+      return -1;
+#endif
     }
   
   heap_end += incr;