diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7f3cd34604d0..5f35ff3ef8b3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2006-05-07  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR target/27421
+	* config/i386/i386.c (classify_argument): Skip fields with invalid
+	types.
+
 2006-05-07  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/27409
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index cb4eaea15ab5..a092484da186 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2961,6 +2961,9 @@ classify_argument (enum machine_mode mode, tree type,
 		{
 		  int num;
 
+		  if (TREE_TYPE (field) == error_mark_node)
+		    continue;
+
 		  /* Bitfields are always classified as integer.  Handle them
 		     early, since later code would consider them to be
 		     misaligned integers.  */
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 7041216ac224..f15d7fcb5c19 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2006-05-07  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR target/27421
+	* gcc.dg/array-9.c: New test.
+
 2006-05-07  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/27409
diff --git a/gcc/testsuite/gcc.dg/array-9.c b/gcc/testsuite/gcc.dg/array-9.c
new file mode 100644
index 000000000000..f173f656939a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/array-9.c
@@ -0,0 +1,10 @@
+/* PR target/27421 */
+/* { dg-do compile } */
+
+struct A
+{
+  int i;
+  void x[1];  /* { dg-error "array of voids" } */
+};
+
+void foo(struct A a) {}