re PR c/84999 (ICE in make_vector_type, at tree.c:9561)

	PR c/84999
	* c-typeck.c (build_binary_op): If c_common_type_for_size fails when
	building vector comparison, diagnose it and return error_mark_node.

	* c-c++-common/pr84999.c: New test.

From-SVN: r258747

gcc/c/ChangeLog

+2018-03-21  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/84999
+	* c-typeck.c (build_binary_op): If c_common_type_for_size fails when
+	building vector comparison, diagnose it and return error_mark_node.
+
 2018-03-15  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/84853

gcc/c/c-typeck.c

@@ -11504,6 +11504,13 @@ build_binary_op (location_t location, enum tree_code code,
           intt = c_common_type_for_size (GET_MODE_BITSIZE
 					 (SCALAR_TYPE_MODE
 					  (TREE_TYPE (type0))), 0);
+	  if (!intt)
+	    {
+	      error_at (location, "could not find an integer type "
+				  "of the same size as %qT",
+			TREE_TYPE (type0));
+	      return error_mark_node;
+	    }
           result_type = build_opaque_vector_type (intt,
 						  TYPE_VECTOR_SUBPARTS (type0));
           converted = 1;
@@ -11665,6 +11672,13 @@ build_binary_op (location_t location, enum tree_code code,
           intt = c_common_type_for_size (GET_MODE_BITSIZE
 					 (SCALAR_TYPE_MODE
 					  (TREE_TYPE (type0))), 0);
+	  if (!intt)
+	    {
+	      error_at (location, "could not find an integer type "
+				  "of the same size as %qT",
+			TREE_TYPE (type0));
+	      return error_mark_node;
+	    }
           result_type = build_opaque_vector_type (intt,
 						  TYPE_VECTOR_SUBPARTS (type0));
           converted = 1;

gcc/testsuite/ChangeLog

+2018-03-21  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/84999
+	* c-c++-common/pr84999.c: New test.
+
 2018-03-21  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/84972

gcc/testsuite/c-c++-common/pr84999.c

+/* PR c/84999 */
+/* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */
+/* { dg-options "" } */
+
+typedef __float128 V __attribute__ ((__vector_size__ (2 * sizeof (__float128))));
+V a;
+typeof (a != 0) b;	/* { dg-error "could not find an integer type of the same size as" "" { target ia32 } } */
+typeof (a == 0) c;	/* { dg-error "could not find an integer type of the same size as" "" { target ia32 } } */
+typeof (a < 0) d;	/* { dg-error "could not find an integer type of the same size as" "" { target ia32 } } */
+typeof (a <= 0) e;	/* { dg-error "could not find an integer type of the same size as" "" { target ia32 } } */
+typeof (a > 0) f;	/* { dg-error "could not find an integer type of the same size as" "" { target ia32 } } */
+typeof (a >= 0) g;	/* { dg-error "could not find an integer type of the same size as" "" { target ia32 } } */