--- gcc/gcc.c.jj	2011-07-08 15:09:38.000000000 +0200
+++ gcc/gcc.c	2011-07-19 10:15:25.000000000 +0200
@@ -6156,6 +6156,24 @@ main (int argc, char **argv)
   signal (SIGCHLD, SIG_DFL);
 #endif
 
+#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_STACK) && defined(RLIM_INFINITY)
+  {
+    /* Parsing and gimplification sometimes need quite large stack.
+       Increase stack size limits if possible.  */
+    struct rlimit rlim;
+    if (getrlimit (RLIMIT_STACK, &rlim) == 0
+	&& rlim.rlim_cur != RLIM_INFINITY
+	&& rlim.rlim_cur < 64 * 1024 * 1024
+	&& (rlim.rlim_max == RLIM_INFINITY || rlim.rlim_cur < rlim.rlim_max))
+      {
+	rlim.rlim_cur = 64 * 1024 * 1024;
+	if (rlim.rlim_max != RLIM_INFINITY)
+	  rlim.rlim_cur = MIN (rlim.rlim_cur, rlim.rlim_max);
+	setrlimit (RLIMIT_STACK, &rlim);
+      }
+  }
+#endif
+
   /* Allocate the argument vector.  */
   alloc_args ();
 
--- gcc/toplev.c.jj	2011-07-11 10:39:50.000000000 +0200
+++ gcc/toplev.c	2011-07-19 10:15:37.000000000 +0200
@@ -1911,6 +1911,24 @@ do_compile (void)
 int
 toplev_main (int argc, char **argv)
 {
+#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_STACK) && defined(RLIM_INFINITY)
+  {
+    /* Parsing and gimplification sometimes need quite large stack.
+       Increase stack size limits if possible.  */
+    struct rlimit rlim;
+    if (getrlimit (RLIMIT_STACK, &rlim) == 0
+	&& rlim.rlim_cur != RLIM_INFINITY
+	&& rlim.rlim_cur < 64 * 1024 * 1024
+	&& (rlim.rlim_max == RLIM_INFINITY || rlim.rlim_cur < rlim.rlim_max))
+      {
+	rlim.rlim_cur = 64 * 1024 * 1024;
+	if (rlim.rlim_max != RLIM_INFINITY)
+	  rlim.rlim_cur = MIN (rlim.rlim_cur, rlim.rlim_max);
+	setrlimit (RLIMIT_STACK, &rlim);
+      }
+  }
+#endif
+
   expandargv (&argc, &argv);
 
   /* Initialization of GCC's environment, and diagnostics.  */