[flang] address review comments

Original-commit: flang-compiler/f18@6f4af0fc1b
Reviewed-on: https://github.com/flang-compiler/f18/pull/304
Tree-same-pre-rewrite: false

flang/documentation/f2018-grammar.txt

@@ -1,4 +1,4 @@
-# Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+# Copyright (c) 2018-2019, NVIDIA CORPORATION.  All rights reserved.
 
 R0001 digit -> 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
 R0002 letter ->

flang/lib/common/enum-set.h

@@ -1,4 +1,4 @@
-// Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+// Copyright (c) 2018-2019, NVIDIA CORPORATION.  All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

flang/lib/common/indirection.h

@@ -1,4 +1,4 @@
-// Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+// Copyright (c) 2018-2019, NVIDIA CORPORATION.  All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

flang/lib/semantics/resolve-names.cc

@@ -3052,8 +3052,7 @@ bool DeclarationVisitor::Pre(const parser::ProcPointerInit &x) {
 }
 bool DeclarationVisitor::Pre(const parser::ProcInterface &x) {
   if (auto *name{std::get_if<parser::Name>(&x.u)}) {
-    if (!FindSymbol(*name) &&
-        !HandleUnrestrictedSpecificIntrinsicFunction(*name)) {
+    if (!NameIsKnownOrIntrinsic(*name)) {
       // Simple names (lacking parameters and size) of intrinsic types re
       // ambiguous in Fortran when used as instances of proc-interface.
       // The parser recognizes them as interface-names since they can be

flang/test/semantics/resolve45.f90

@@ -0,0 +1,76 @@
+! Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+!
+! Licensed under the Apache License, Version 2.0 (the "License");
+! you may not use this file except in compliance with the License.
+! You may obtain a copy of the License at
+!
+!     http://www.apache.org/licenses/LICENSE-2.0
+!
+! Unless required by applicable law or agreed to in writing, software
+! distributed under the License is distributed on an "AS IS" BASIS,
+! WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+! See the License for the specific language governing permissions and
+! limitations under the License.
+
+function f1(x, y)
+  integer x
+  !ERROR: SAVE attribute may not be applied to dummy argument 'x'
+  !ERROR: SAVE attribute may not be applied to dummy argument 'y'
+  save x,y
+  integer y
+  !ERROR: SAVE attribute may not be applied to function result 'f1'
+  save f1
+end
+
+function f2(x, y)
+  !ERROR: SAVE attribute may not be applied to function result 'f2'
+  real, save :: f2
+  !ERROR: SAVE attribute may not be applied to dummy argument 'x'
+  complex, save :: x
+  allocatable :: y
+  !ERROR: SAVE attribute may not be applied to dummy argument 'y'
+  integer, save :: y
+end
+
+subroutine s3(x)
+  !ERROR: SAVE attribute may not be applied to dummy argument 'x'
+  procedure(integer), pointer, save :: x
+  !ERROR: Procedure 'y' with SAVE attribute must also have POINTER attribute
+  procedure(integer), save :: y
+end
+
+subroutine s4
+  !ERROR: Explicit SAVE of 'z' is redundant due to global SAVE statement
+  save z
+  save
+  procedure(integer), pointer :: x
+  !ERROR: Explicit SAVE of 'x' is redundant due to global SAVE statement
+  save :: x
+  !ERROR: Explicit SAVE of 'y' is redundant due to global SAVE statement
+  integer, save :: y
+end
+
+subroutine s5
+  implicit none
+  integer x
+  block
+    !ERROR: No explicit type declared for 'x'
+    save x
+  end block
+end
+
+subroutine s6
+  save x
+  save y
+  !ERROR: SAVE attribute was already specified on 'y'
+  integer, save :: y
+  integer, save :: z
+  !ERROR: SAVE attribute was already specified on 'x'
+  !ERROR: SAVE attribute was already specified on 'z'
+  save x,z
+end
+
+subroutine s7
+  !ERROR: 'x' appears as a COMMON block in a SAVE statement but not in a COMMON statement
+  save /x/
+end

flang/test/semantics/resolve46.f90

@@ -16,6 +16,7 @@ program main
   intrinsic :: cos ! a specific & generic intrinsic name
   intrinsic :: alog10 ! a specific intrinsic name, not generic
   intrinsic :: null ! a weird special case
+  intrinsic :: bessel_j0 ! generic intrinsic, not specific
   !ERROR: 'haltandcatchfire' is not a known intrinsic procedure
   intrinsic :: haltandcatchfire
   procedure(sin), pointer :: p
@@ -25,4 +26,6 @@ program main
   p => tan ! a generic & an unrestricted specific, not already declared
   !TODO ERROR: a restricted specific, to be caught in ass't semantics
   p => amin1
+  !TODO ERROR: a generic, to be caught in ass't semantics
+  p => bessel_j0
 end program main