class.c (check_bitfield_decl): In error message about non-integral type print the type itself too.

/cp
2018-12-06  Paolo Carlini  <paolo.carlini@oracle.com>

	* class.c (check_bitfield_decl): In error message about non-integral
	type print the type itself too.
	* decl.c (grokdeclarator): Do not ICE on unnamed bit-fields declared
	friends; when calling build_decl for a FIELD_DECL possibly pass the
	declarator->id_loc.

/testsuite
2018-12-06  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/parse/bitfield7.C: New.
	* g++.dg/other/bitfield2.C: Check location and type.
	* g++.dg/parse/bitfield1.C: Likewise.
	* g++.dg/parse/bitfield2.C: Likewise.

From-SVN: r266876

gcc/cp/ChangeLog

+2018-12-06  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* class.c (check_bitfield_decl): In error message about non-integral
+	type print the type itself too.
+	* decl.c (grokdeclarator): Do not ICE on unnamed bit-fields declared
+	friends; when calling build_decl for a FIELD_DECL possibly pass the
+	declarator->id_loc.
+
 2018-12-06  Alexandre Oliva <aoliva@redhat.com>
 
 	PR c++/86747

gcc/cp/class.c

@@ -3218,7 +3218,8 @@ check_bitfield_decl (tree field)
   /* Detect invalid bit-field type.  */
   if (!INTEGRAL_OR_ENUMERATION_TYPE_P (type))
     {
-      error ("bit-field %q+#D with non-integral type", field);
+      error_at (DECL_SOURCE_LOCATION (field),
+		"bit-field %q#D with non-integral type %qT", field, type);
       w = error_mark_node;
     }
   else

gcc/cp/decl.c

@@ -12446,9 +12446,13 @@ grokdeclarator (const cp_declarator *declarator,
 	  {
 	    if (friendp)
 	      {
-		error_at (declarator->id_loc,
-			  "%qE is neither function nor member function; "
-			  "cannot be declared friend", unqualified_id);
+		if (unqualified_id && declarator)
+		  error_at (declarator->id_loc,
+			    "%qE is neither function nor member function; "
+			    "cannot be declared friend", unqualified_id);
+		else
+		  error ("unnamed field is neither function nor member "
+			 "function; cannot be declared friend");
 		return error_mark_node;
 	      }
 	    decl = NULL_TREE;
@@ -12483,14 +12487,13 @@ grokdeclarator (const cp_declarator *declarator,
 
 	if (decl == NULL_TREE)
 	  {
+	    location_t loc = declarator ? declarator->id_loc : input_location;
 	    if (staticp)
 	      {
 		/* C++ allows static class members.  All other work
 		   for this is done by grokfield.  */
-		decl = build_lang_decl_loc (declarator
-					    ? declarator->id_loc
-					    : input_location,
-					    VAR_DECL, unqualified_id, type);
+		decl = build_lang_decl_loc (loc, VAR_DECL,
+					    unqualified_id, type);
 		set_linkage_for_static_data_member (decl);
 		if (concept_p)
 		  error_at (declspecs->locations[ds_concept],
@@ -12536,8 +12539,7 @@ grokdeclarator (const cp_declarator *declarator,
 			      unqualified_id);
 		    constexpr_p = false;
 		  }
-		decl = build_decl (input_location,
-				   FIELD_DECL, unqualified_id, type);
+		decl = build_decl (loc, FIELD_DECL, unqualified_id, type);
 		DECL_NONADDRESSABLE_P (decl) = bitfield;
 		if (bitfield && !unqualified_id)
 		  {

gcc/testsuite/ChangeLog

+2018-12-06  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* g++.dg/parse/bitfield7.C: New.
+	* g++.dg/other/bitfield2.C: Check location and type.
+	* g++.dg/parse/bitfield1.C: Likewise.
+	* g++.dg/parse/bitfield2.C: Likewise.
+
 2018-12-06  Alexandre Oliva <aoliva@redhat.com>
 
 	PR c++/86747

gcc/testsuite/g++.dg/other/bitfield2.C

@@ -3,7 +3,7 @@
 
 struct A
 {
-  double d : 2;  // { dg-error "non-integral" }
+  double d : 2;  // { dg-error "10:bit-field .d. with non-integral type .double." }
   A() {}
   ~A() {}
 };

gcc/testsuite/g++.dg/parse/bitfield1.C

@@ -2,7 +2,7 @@
 
 struct A
 {
-  double i : 8; // { dg-error "type" }
+  double i : 8; // { dg-error "10:bit-field .i. with non-integral type .double." }
 };
 
 void foo(A& a)

gcc/testsuite/g++.dg/parse/bitfield2.C

@@ -4,7 +4,7 @@ struct X {};
 
 struct A
 {
-    X x : 2;            // { dg-error "non-integral type" }
+    X x : 2;            // { dg-error "7:bit-field .x. with non-integral type .X." }
 };
 struct B : A {};
 
@@ -19,7 +19,7 @@ C<int> c;
 template <typename T>
 struct D
 {
-  T t : 3;              // { dg-error "non-integral type" }
+  T t : 3;              // { dg-error "5:bit-field .double D\\<double\\>::t. with non-integral type .double." }
 };
 
 D<double> d;            // { dg-message "required" }
@@ -28,7 +28,7 @@ template <typename T>
 struct E
 {
   typedef T* U;
-  U t : 3;             // { dg-error "non-integral type" }
+  U t : 3;             // { dg-error "5:bit-field .t. with non-integral type .E\\<T\\>::U." }
 };
 
 E<double> e;

gcc/testsuite/g++.dg/parse/bitfield7.C

+struct A
+{
+  friend int : 1;  // { dg-error "unnamed field" }
+};