diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 2d73639bce1433cc824553b4d862c494fd5a1584..202e416cb571d4d70a317934f8bf61f52acce7cf 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2004-12-09  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c++/18073
+	* typeck.c (build_reinterpret_cast_1): Allow cast from vector type.
+
 2004-12-09  Nathan Sidwell  <nathan@codesourcery.com>
 
 	PR c++/16681
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index a26bff4b56108f1e8c68be3f08c9bf8ee247445d..74380d36a92bdcc1fcfa188b4b2498301f60257e 100644
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -4956,6 +4956,8 @@ build_reinterpret_cast_1 (tree type, tree expr, bool c_cast_p,
     }
   else if (TREE_CODE (type) == VECTOR_TYPE)
     return fold_if_not_in_template (convert_to_vector (type, expr));
+  else if (TREE_CODE (intype) == VECTOR_TYPE)
+    return fold_if_not_in_template (convert_to_integer (type, expr));
   else
     {
       if (valid_p)
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d8ad0adbf58a070b3c5933600490020c12da2247..54b1dfe9da3d51c28605172e5b06c8f8b3933c17 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2004-12-09  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c++/18073
+	* g++.dg/other/mmintrin.C: New test.
+
 2004-12-09  Nathan Sidwell  <nathan@codesourcery.com>
 
 	PR c++/16681
diff --git a/gcc/testsuite/g++.dg/other/mmintrin.C b/gcc/testsuite/g++.dg/other/mmintrin.C
new file mode 100644
index 0000000000000000000000000000000000000000..417a1acc6de133de98b881011c1a9353028c4e03
--- /dev/null
+++ b/gcc/testsuite/g++.dg/other/mmintrin.C
@@ -0,0 +1,4 @@
+// { dg-do compile { target i?86-*-* x86_64-*-* } }
+// { dg-options "-msse" }
+
+#include <xmmintrin.h>