PR libstdc++/33485 continued.

2007-10-09  Wolfgang Bangerth  <bangerth@dealii.org>

	PR libstdc++/33485 continued.
	* include/parallel/multiway_mergesort.h: Use __builtin_alloca.

From-SVN: r129182

libstdc++-v3/ChangeLog

+2007-10-09  Wolfgang Bangerth  <bangerth@dealii.org>
+
+	PR libstdc++/33485 continued.
+	* include/parallel/multiway_mergesort.h: Use __builtin_alloca.
+	
 2007-10-09  Zhou Drangon  <drangon.mail@gmail.com>
 
 	PR libstdc++/33682

libstdc++-v3/include/parallel/multiway_mergesort.h

@@ -139,7 +139,8 @@ namespace __gnu_parallel
 
     num_samples = Settings::sort_mwms_oversampling * d->num_threads - 1;
 
-    difference_type es[num_samples + 2];
+    difference_type* es = static_cast<difference_type*>(__builtin_alloca(sizeof(difference_type) * (num_samples + 2)));
+
     equally_split(sd->starts[d->iam + 1] - sd->starts[d->iam], num_samples + 1, es);
 
     for (difference_type i = 0; i < num_samples; i++)