diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 8324c7436872..275d7f2c4435 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-02-28  Kai Tietz  <ktietz@redhat.com>
+
+	* config/i386/sfp-machine.h (_FP_STRUCT_LAYOUT): Define it
+	for mingw-targets as attribute gcc_struct.
+
 2012-02-28  Ian Lance Taylor  <iant@google.com>
 
 	* generic-morestack.c (__splitstack_releasecontext): Correct call
diff --git a/libgcc/config/i386/sfp-machine.h b/libgcc/config/i386/sfp-machine.h
index f2df869653ff..eb4b8bfb5fd8 100644
--- a/libgcc/config/i386/sfp-machine.h
+++ b/libgcc/config/i386/sfp-machine.h
@@ -1,3 +1,8 @@
+#ifdef __MINGW32__
+  /* Make sure we are using gnu-style bitfield handling.  */
+#define _FP_STRUCT_LAYOUT  __attribute__ ((gcc_struct))
+#endif
+
 #ifdef __x86_64__
 #include "config/i386/64/sfp-machine.h"
 #else