--- /dev/null
+/* PR target/10067 */
+/* Originator: <dat94ali@ludat.lth.se> */
+/* { dg-do compile { target sparc-*-* } } */
+/* { dg-options "-O2 -m64 -mtune=supersparc" } */
+
+struct _reent;
+
+extern unsigned long __malloc_trim_threshold;
+extern unsigned long __malloc_top_pad;
+
+int _mallopt_r(struct _reent *reent_ptr, int param_number, int value)
+{
+ __malloc_lock(reent_ptr);
+
+ switch(param_number)
+ {
+ case -1:
+ __malloc_trim_threshold = value;
+ __malloc_unlock(reent_ptr);
+ return 1;
+
+ case -2:
+ __malloc_top_pad = value;
+ __malloc_unlock(reent_ptr);
+ return 1;
+
+ case -3:
+ __malloc_unlock(reent_ptr);
+ return 1;
+
+ case -4:
+ __malloc_unlock(reent_ptr);
+ return value == 0;
+
+ default:
+ __malloc_unlock(reent_ptr);
+ return 0;
+ }
+}