re PR middle-end/32970 (C++ frontend can not handle vector pointer constant parameter)

	PR middle-end/32970
gcc/
	* tree.c (reconstruct_complex_type): For a pointer to a vector,
	use build_qualified_type to retain qualifiers of the base type.
testsuite/
	* g++.dg/ext/altivec-14.C: New test.

From-SVN: r127578

gcc/ChangeLog

+2007-08-17  Sa Liu  <saliu@de.ibm.com>
+	    Ulrich Weigand  <uweigand@de.ibm.com>
+
+	PR middle-end/32970
+	* tree.c (reconstruct_complex_type): For a pointer to a vector,
+	use build_qualified_type to retain qualifiers of the base type.
+
 2007-08-17  Chen Liqin  <liqin@sunnorth.com.cn>
+
         * config/score/score.md : Update pattern tablejump.
         * config/score/score.c : Update score_initialize_trampoline 
         function.

gcc/testsuite/ChangeLog

+2007-08-17  Ben Elliston  <bje@au.ibm.com>
+
+	PR middle-end/32970
+	* g++.dg/ext/altivec-14.C: New test.
+
 2007-08-16  Uros Bizjak  <ubizjak@gmail.com>
 
 	* gcc.dg/tree-ssa/ssa-dse-10.c: Clean up all dse dump files.

gcc/testsuite/g++.dg/ext/altivec-14.C

+/* { dg-do compile { target powerpc*-*-* } } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-options "-maltivec" } */
+
+void f (__attribute__((altivec (vector__))) signed int * a,
+	__attribute__((altivec (vector__))) signed int * const b);
+
+int
+foo (void)
+{
+  __attribute__((altivec (vector__))) signed int a[1], b[1];
+  f (a, b);
+}

gcc/tree.c

@@ -7609,10 +7609,7 @@ reconstruct_complex_type (tree type, tree bottom)
   else
     return bottom;
 
-  TYPE_READONLY (outer) = TYPE_READONLY (type);
-  TYPE_VOLATILE (outer) = TYPE_VOLATILE (type);
-
-  return outer;
+  return build_qualified_type (outer, TYPE_QUALS (type));
 }
 
 /* Returns a vector tree node given a mode (integer, vector, or BLKmode) and