re PR c++/83592 (Annoying -Wparentheses warnings)

	PR c++/83592
	* decl.c (grokdeclarator): Don't warn about MVP in typename context.

	* g++.dg/warn/mvp2.C: New test.

From-SVN: r256176

gcc/cp/ChangeLog

+2018-01-03  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/83592
+	* decl.c (grokdeclarator): Don't warn about MVP in typename context.
+
 2018-01-03  Jakub Jelinek  <jakub@redhat.com>
 
 	PR preprocessor/83602

gcc/cp/decl.c

@@ -10866,10 +10866,11 @@ grokdeclarator (const cp_declarator *declarator,
 
       inner_declarator = declarator->declarator;
 
-      /* We don't want to warn in parmeter context because we don't
+      /* We don't want to warn in parameter context because we don't
 	 yet know if the parse will succeed, and this might turn out
 	 to be a constructor call.  */
       if (decl_context != PARM
+	  && decl_context != TYPENAME
 	  && declarator->parenthesized != UNKNOWN_LOCATION
 	  /* If the type is class-like and the inner name used a
 	     global namespace qualifier, we need the parens.

gcc/testsuite/ChangeLog

+2018-01-03  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/83592
+	* g++.dg/warn/mvp2.C: New test.
+
 2018-01-03  Jakub Jelinek  <jakub@redhat.com>
 
 	PR preprocessor/83602

gcc/testsuite/g++.dg/warn/mvp2.C

+// PR c++/83592
+// { dg-do compile }
+// { dg-options "-Wparentheses" }
+
+// Test that -Wparentheses does not give bogus warnings in
+// typename context.
+
+int *
+foo (long &a)
+{
+  return reinterpret_cast<int (*)> (&a);
+}
+
+int *
+bar (long &a)
+{
+  return (int (*)) &a;
+}
+
+int *
+baz (int &a)
+{
+  return static_cast<int (*const)> (&a);
+}