diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 946eb6a7003..2b3033e54bc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2008-02-17  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/35227
+	* tree-complex.c (init_parameter_lattice_values): Handle parameters
+	without default definition.
+
 2008-02-17  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/35231
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index c167949098c..7f8b32a7258 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2008-02-17  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/35227
+	* gcc.dg/torture/pr35227.c: New testcase.
+
 2008-02-17  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/35231
diff --git a/gcc/testsuite/gcc.dg/torture/pr35227.c b/gcc/testsuite/gcc.dg/torture/pr35227.c
new file mode 100644
index 00000000000..d951d250fb2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr35227.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+
+mandel(double _Complex C)
+{
+  int py;
+  C = (__extension__ 1.0iF) * (double)py;
+  return cabs(C);  /* { dg-warning "incompatible" } */
+}
+
diff --git a/gcc/tree-complex.c b/gcc/tree-complex.c
index a1964ee6813..b9c7ebc489f 100644
--- a/gcc/tree-complex.c
+++ b/gcc/tree-complex.c
@@ -161,15 +161,14 @@ is_complex_reg (tree lhs)
 static void
 init_parameter_lattice_values (void)
 {
-  tree parm;
+  tree parm, ssa_name;
 
   for (parm = DECL_ARGUMENTS (cfun->decl); parm ; parm = TREE_CHAIN (parm))
-    if (is_complex_reg (parm) && var_ann (parm) != NULL)
-      {
-	tree ssa_name = gimple_default_def (cfun, parm);
-	VEC_replace (complex_lattice_t, complex_lattice_values,
-		     SSA_NAME_VERSION (ssa_name), VARYING);
-      }
+    if (is_complex_reg (parm)
+	&& var_ann (parm) != NULL
+	&& (ssa_name = gimple_default_def (cfun, parm)) != NULL_TREE)
+      VEC_replace (complex_lattice_t, complex_lattice_values,
+		   SSA_NAME_VERSION (ssa_name), VARYING);
 }
 
 /* Initialize DONT_SIMULATE_AGAIN for each stmt and phi.  Return false if