decl.c (grokdeclarator): Check here for typedef a function definition or a…

decl.c (grokdeclarator): Check here for typedef a function definition or a member function definition.

/cp
2019-08-14  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Check here for typedef a function
	definition or a member function definition.
	(start_function): Adjust.
	(grokmethod): Likewise.

/testsuite
2019-08-14  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/parse/typedef9.C: Test locations too.

From-SVN: r274431

gcc/cp/decl.c

@@ -12164,6 +12164,17 @@ grokdeclarator (const cp_declarator *declarator,
       bool alias_p = decl_spec_seq_has_spec_p (declspecs, ds_alias);
       tree decl;
 
+      if (funcdef_flag)
+	{
+	  if (decl_context == NORMAL)
+	    error_at (id_loc,
+		      "typedef may not be a function definition");
+	  else
+	    error_at (id_loc,
+		      "typedef may not be a member function definition");
+	  return error_mark_node;
+	}
+
       /* This declaration:
 
 	   typedef void f(int) const;
@@ -15776,13 +15787,6 @@ start_function (cp_decl_specifier_seq *declspecs,
   invoke_plugin_callbacks (PLUGIN_START_PARSE_FUNCTION, decl1);
   if (decl1 == error_mark_node)
     return false;
-  /* If the declarator is not suitable for a function definition,
-     cause a syntax error.  */
-  if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL)
-    {
-      error ("invalid function declaration");
-      return false;
-    }
 
   if (DECL_MAIN_P (decl1))
     /* main must return int.  grokfndecl should have corrected it
@@ -16437,12 +16441,6 @@ grokmethod (cp_decl_specifier_seq *declspecs,
   if (fndecl == error_mark_node)
     return error_mark_node;
 
-  if (fndecl == NULL || TREE_CODE (fndecl) != FUNCTION_DECL)
-    {
-      error ("invalid member function declaration");
-      return error_mark_node;
-    }
-
   if (attrlist)
     cplus_decl_attributes (&fndecl, attrlist, 0);
 

gcc/testsuite/g++.dg/parse/typedef9.C

 // PR c++/38794
 // { dg-do compile }
 
-typedef void foo () {}	// { dg-error "invalid function declaration" }
+typedef void foo () {}	// { dg-error "14:typedef may not be a function definition" }
 struct S
 {
-  typedef int bar (void) { return 0; } // { dg-error "invalid member function declaration" }
+  typedef int bar (void) { return 0; } // { dg-error "15:typedef may not be a member function definition" }
 };