diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index e856e4b65d7e..08d4faa1314c 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,9 @@
+2011-12-12  Kai Tietz  <ktietz@redhat.com>
+
+	PR libgcj/50053
+	* java/lang/natClass.cc (java::lang::Class::newInstance): Special case
+	member-call for 32-bit IA native Window target.
+
 2011-11-24  Jakub Jelinek  <jakub@redhat.com>
 
 	PR bootstrap/50888
diff --git a/libjava/java/lang/natClass.cc b/libjava/java/lang/natClass.cc
index ec4a18f1b51b..b5ad91f2252c 100644
--- a/libjava/java/lang/natClass.cc
+++ b/libjava/java/lang/natClass.cc
@@ -661,7 +661,13 @@ java::lang::Class::newInstance (void)
     throw new java::lang::InstantiationException (getName());
 
   jobject r = _Jv_AllocObject (this);
+  /* Class constructors/destructors have __thiscall calling
+     convention for 32-bit native Windows ABI.  */
+#if defined (__MINGW32__) && defined (__i386__)
+  ((void (__thiscall *) (jobject)) meth->ncode) (r);
+#else
   ((void (*) (jobject)) meth->ncode) (r);
+#endif
   return r;
 }