compnerd updated this revision to Diff 475570.
compnerd edited the summary of this revision.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D137979/new/

https://reviews.llvm.org/D137979

Files:
  clang/include/clang/Parse/Parser.h
  clang/lib/Parse/ParseDeclCXX.cpp
  clang/lib/Parse/ParseHLSL.cpp
  clang/lib/Parse/ParseObjc.cpp
  clang/lib/Parse/ParseOpenMP.cpp
  clang/lib/Parse/Parser.cpp
  clang/test/Parser/attr-order.cpp
  clang/test/Parser/cxx-attributes.cpp
  clang/test/SemaCXX/attr-unavailable.cpp
  clang/test/SemaObjC/objc-asm-attribute-neg-test.m
  clang/unittests/Tooling/SourceCodeTest.cpp

Index: clang/unittests/Tooling/SourceCodeTest.cpp
===================================================================
--- clang/unittests/Tooling/SourceCodeTest.cpp
+++ clang/unittests/Tooling/SourceCodeTest.cpp
@@ -247,14 +247,25 @@
 
   // Includes attributes.
   Visitor.runOverAnnotated(R"cpp(
-      #define ATTR __attribute__((deprecated("message")))
-      $r[[ATTR
+      $r[[__attribute__((deprecated("message")))
       int x;]])cpp");
 
   // Includes attributes and comments together.
   Visitor.runOverAnnotated(R"cpp(
-      #define ATTR __attribute__((deprecated("message")))
-      $r[[ATTR
+      $r[[__attribute__((deprecated("message")))
+      // Comment.
+      int x;]])cpp");
+
+  // Includes attributes through macro expansion.
+  Visitor.runOverAnnotated(R"cpp(
+      #define MACRO_EXPANSION __attribute__((deprecated("message")))
+      $r[[MACRO_EXPANSION
+      int x;]])cpp");
+
+  // Includes attributes through macro expansion with comments.
+  Visitor.runOverAnnotated(R"cpp(
+      #define MACRO_EXPANSION __attribute__((deprecated("message")))
+      $r[[MACRO_EXPANSION
       // Comment.
       int x;]])cpp");
 }
@@ -402,14 +413,25 @@
 
   // Includes attributes.
   Visit(R"cpp(
-      #define ATTR __attribute__((deprecated("message")))
-      $r[[ATTR
+      $r[[__attribute__((deprecated("message")))
       int x;]])cpp");
 
   // Includes attributes and comments together.
   Visit(R"cpp(
-      #define ATTR __attribute__((deprecated("message")))
-      $r[[ATTR
+      $r[[__attribute__((deprecated("message")))
+      // Comment.
+      int x;]])cpp");
+
+  // Includes attributes through macro expansion.
+  Visitor.runOverAnnotated(R"cpp(
+      #define MACRO_EXPANSION __attribute__((deprecated("message")))
+      $r[[MACRO_EXPANSION
+      int x;]])cpp");
+
+  // Includes attributes through macro expansion with comments.
+  Visitor.runOverAnnotated(R"cpp(
+      #define MACRO_EXPANSION __attribute__((deprecated("message")))
+      $r[[MACRO_EXPANSION
       // Comment.
       int x;]])cpp");
 }
Index: clang/test/SemaObjC/objc-asm-attribute-neg-test.m
===================================================================
--- clang/test/SemaObjC/objc-asm-attribute-neg-test.m
+++ clang/test/SemaObjC/objc-asm-attribute-neg-test.m
@@ -28,7 +28,7 @@
 @end
 
 __attribute__((objc_runtime_name("MySecretNamespace.ForwardClass")))
-@class ForwardClass; // expected-error {{prefix attribute must be followed by an interface, protocol, or implementation}}
+@class ForwardClass; // expected-error@-1 {{prefix attribute must be followed by an interface, protocol, or implementation}}
 
 __attribute__((objc_runtime_name("MySecretNamespace.ForwardProtocol")))
 @protocol ForwardProtocol;
Index: clang/test/SemaCXX/attr-unavailable.cpp
===================================================================
--- clang/test/SemaCXX/attr-unavailable.cpp
+++ clang/test/SemaCXX/attr-unavailable.cpp
@@ -42,18 +42,18 @@
 // delayed process for 'deprecated'.
 // <rdar://problem/12241361> and <rdar://problem/15584219>
 enum DeprecatedEnum { DE_A, DE_B } __attribute__((deprecated)); // expected-note {{'DeprecatedEnum' has been explicitly marked deprecated here}}
-__attribute__((deprecated)) typedef enum DeprecatedEnum DeprecatedEnum;
 typedef enum DeprecatedEnum AnotherDeprecatedEnum; // expected-warning {{'DeprecatedEnum' is deprecated}}
 
+__attribute__((deprecated)) typedef enum DeprecatedEnum DeprecatedEnum;
 __attribute__((deprecated))
 DeprecatedEnum testDeprecated(DeprecatedEnum X) { return X; }
 
 
 enum UnavailableEnum { UE_A, UE_B } __attribute__((unavailable)); // expected-note {{'UnavailableEnum' has been explicitly marked unavailable here}}
-__attribute__((unavailable)) typedef enum UnavailableEnum UnavailableEnum;
 typedef enum UnavailableEnum AnotherUnavailableEnum; // expected-error {{'UnavailableEnum' is unavailable}}
+                                                     //
 
-
+__attribute__((unavailable)) typedef enum UnavailableEnum UnavailableEnum;
 __attribute__((unavailable))
 UnavailableEnum testUnavailable(UnavailableEnum X) { return X; }
 
Index: clang/test/Parser/cxx-attributes.cpp
===================================================================
--- clang/test/Parser/cxx-attributes.cpp
+++ clang/test/Parser/cxx-attributes.cpp
@@ -1,5 +1,9 @@
 // RUN: %clang_cc1 -fsyntax-only -verify %s
 
+// GH#58229 - rejects-valid
+__attribute__((__visibility__("default"))) [[nodiscard]] int f();
+[[nodiscard]] __attribute__((__visibility__("default"))) int f();
+
 class c {
   virtual void f1(const char* a, ...)
     __attribute__ (( __format__(__printf__,2,3) )) = 0;
Index: clang/test/Parser/attr-order.cpp
===================================================================
--- clang/test/Parser/attr-order.cpp
+++ clang/test/Parser/attr-order.cpp
@@ -17,8 +17,8 @@
 __declspec(dllexport) [[noreturn]] __attribute__((cdecl)) void d(); // expected-error {{an attribute list cannot appear here}}
 __declspec(dllexport) __attribute__((cdecl)) [[noreturn]] void e(); // expected-error {{an attribute list cannot appear here}}
 __attribute__((cdecl)) __declspec(dllexport) [[noreturn]] void f(); // expected-error {{an attribute list cannot appear here}}
-__attribute__((cdecl)) [[noreturn]] __declspec(dllexport) void g(); // expected-error {{an attribute list cannot appear here}}
+__attribute__((cdecl)) [[noreturn]] __declspec(dllexport) void g();
 
 [[noreturn]] __attribute__((cdecl))
-[[]] // expected-error {{an attribute list cannot appear here}}
+[[]]
 __declspec(dllexport) void h();
Index: clang/lib/Parse/Parser.cpp
===================================================================
--- clang/lib/Parse/Parser.cpp
+++ clang/lib/Parse/Parser.cpp
@@ -732,9 +732,12 @@
   }
 
   ParsedAttributes attrs(AttrFactory);
-  MaybeParseCXX11Attributes(attrs);
+  ParsedAttributes DeclSpecAttrs(AttrFactory);
+  while (MaybeParseCXX11Attributes(attrs) ||
+         MaybeParseGNUAttributes(DeclSpecAttrs))
+    ;
 
-  Result = ParseExternalDeclaration(attrs);
+  Result = ParseExternalDeclaration(attrs, DeclSpecAttrs);
   // An empty Result might mean a line with ';' or some parsing error, ignore
   // it.
   if (Result) {
@@ -777,8 +780,10 @@
 ///
 /// [Modules-TS] module-import-declaration
 ///
-Parser::DeclGroupPtrTy Parser::ParseExternalDeclaration(ParsedAttributes &Attrs,
-                                                        ParsingDeclSpec *DS) {
+Parser::DeclGroupPtrTy
+Parser::ParseExternalDeclaration(ParsedAttributes &Attrs,
+                                 ParsedAttributes &DeclSpecAttrs,
+                                 ParsingDeclSpec *DS) {
   DestroyTemplateIdAnnotationsRAIIObj CleanupRAII(*this);
   ParenBraceBracketBalancer BalancerRAIIObj(*this);
 
@@ -866,7 +871,7 @@
     // __extension__ silences extension warnings in the subexpression.
     ExtensionRAIIObject O(Diags);  // Use RAII to do this.
     ConsumeToken();
-    return ParseExternalDeclaration(Attrs);
+    return ParseExternalDeclaration(Attrs, DeclSpecAttrs);
   }
   case tok::kw_asm: {
     ProhibitAttributes(Attrs);
@@ -894,7 +899,7 @@
     break;
   }
   case tok::at:
-    return ParseObjCAtDirectives(Attrs);
+    return ParseObjCAtDirectives(Attrs, DeclSpecAttrs);
   case tok::minus:
   case tok::plus:
     if (!getLangOpts().ObjC) {
@@ -942,18 +947,16 @@
     // A function definition cannot start with any of these keywords.
     {
       SourceLocation DeclEnd;
-      ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
       return ParseDeclaration(DeclaratorContext::File, DeclEnd, Attrs,
-                              EmptyDeclSpecAttrs);
+                              DeclSpecAttrs);
     }
 
   case tok::kw_cbuffer:
   case tok::kw_tbuffer:
     if (getLangOpts().HLSL) {
       SourceLocation DeclEnd;
-      ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
       return ParseDeclaration(DeclaratorContext::File, DeclEnd, Attrs,
-                              EmptyDeclSpecAttrs);
+                              DeclSpecAttrs);
     }
     goto dont_know;
 
@@ -964,9 +967,8 @@
       Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored)
         << 0;
       SourceLocation DeclEnd;
-      ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
       return ParseDeclaration(DeclaratorContext::File, DeclEnd, Attrs,
-                              EmptyDeclSpecAttrs);
+                              DeclSpecAttrs);
     }
     goto dont_know;
 
@@ -977,9 +979,8 @@
       // Inline namespaces. Allowed as an extension even in C++03.
       if (NextKind == tok::kw_namespace) {
         SourceLocation DeclEnd;
-        ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
         return ParseDeclaration(DeclaratorContext::File, DeclEnd, Attrs,
-                                EmptyDeclSpecAttrs);
+                                DeclSpecAttrs);
       }
 
       // Parse (then ignore) 'inline' prior to a template instantiation. This is
@@ -988,9 +989,8 @@
         Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored)
           << 1;
         SourceLocation DeclEnd;
-        ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
         return ParseDeclaration(DeclaratorContext::File, DeclEnd, Attrs,
-                                EmptyDeclSpecAttrs);
+                                DeclSpecAttrs);
       }
     }
     goto dont_know;
@@ -1026,7 +1026,7 @@
       return nullptr;
     }
     // We can't tell whether this is a function-definition or declaration yet.
-    return ParseDeclarationOrFunctionDefinition(Attrs, DS);
+    return ParseDeclarationOrFunctionDefinition(Attrs, DeclSpecAttrs, DS);
   }
 
   // This routine returns a DeclGroup, if the thing we parsed only contains a
@@ -1091,7 +1091,12 @@
 /// [OMP]   allocate-directive                         [TODO]
 ///
 Parser::DeclGroupPtrTy Parser::ParseDeclOrFunctionDefInternal(
-    ParsedAttributes &Attrs, ParsingDeclSpec &DS, AccessSpecifier AS) {
+    ParsedAttributes &Attrs, ParsedAttributes &DeclSpecAttrs,
+    ParsingDeclSpec &DS, AccessSpecifier AS) {
+  DS.SetRangeStart(DeclSpecAttrs.Range.getBegin());
+  DS.SetRangeEnd(DeclSpecAttrs.Range.getEnd());
+  DS.takeAttributesFrom(DeclSpecAttrs);
+
   MaybeParseMicrosoftAttributes(DS.getAttributes());
   // Parse the common declaration-specifiers piece.
   ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS,
@@ -1190,9 +1195,10 @@
 }
 
 Parser::DeclGroupPtrTy Parser::ParseDeclarationOrFunctionDefinition(
-    ParsedAttributes &Attrs, ParsingDeclSpec *DS, AccessSpecifier AS) {
+    ParsedAttributes &Attrs, ParsedAttributes &DeclSpecAttrs,
+    ParsingDeclSpec *DS, AccessSpecifier AS) {
   if (DS) {
-    return ParseDeclOrFunctionDefInternal(Attrs, *DS, AS);
+    return ParseDeclOrFunctionDefInternal(Attrs, DeclSpecAttrs, *DS, AS);
   } else {
     ParsingDeclSpec PDS(*this);
     // Must temporarily exit the objective-c container scope for
@@ -1200,7 +1206,7 @@
     // afterwards.
     ObjCDeclContextSwitch ObjCDC(*this);
 
-    return ParseDeclOrFunctionDefInternal(Attrs, PDS, AS);
+    return ParseDeclOrFunctionDefInternal(Attrs, DeclSpecAttrs, PDS, AS);
   }
 }
 
@@ -2342,7 +2348,8 @@
   while (Tok.isNot(tok::r_brace) && !isEofOrEom()) {
     ParsedAttributes Attrs(AttrFactory);
     MaybeParseCXX11Attributes(Attrs);
-    DeclGroupPtrTy Result = ParseExternalDeclaration(Attrs);
+    ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
+    DeclGroupPtrTy Result = ParseExternalDeclaration(Attrs, EmptyDeclSpecAttrs);
     if (Result && !getCurScope()->getParent())
       Actions.getASTConsumer().HandleTopLevelDecl(Result.get());
   }
Index: clang/lib/Parse/ParseOpenMP.cpp
===================================================================
--- clang/lib/Parse/ParseOpenMP.cpp
+++ clang/lib/Parse/ParseOpenMP.cpp
@@ -1994,6 +1994,8 @@
   ParsingOpenMPDirectiveRAII DirScope(*this);
   ParenBraceBracketBalancer BalancerRAIIObj(*this);
 
+  ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
+
   SourceLocation Loc;
   OpenMPDirectiveKind DKind;
   if (Delayed) {
@@ -2247,7 +2249,7 @@
         assert(TagType == DeclSpec::TST_unspecified);
         MaybeParseCXX11Attributes(Attrs);
         ParsingDeclSpec PDS(*this);
-        Ptr = ParseExternalDeclaration(Attrs, &PDS);
+        Ptr = ParseExternalDeclaration(Attrs, EmptyDeclSpecAttrs, &PDS);
       } else {
         Ptr =
             ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag);
Index: clang/lib/Parse/ParseObjc.cpp
===================================================================
--- clang/lib/Parse/ParseObjc.cpp
+++ clang/lib/Parse/ParseObjc.cpp
@@ -45,7 +45,11 @@
 /// [OBJC]  objc-protocol-definition
 /// [OBJC]  objc-method-definition
 /// [OBJC]  '@' 'end'
-Parser::DeclGroupPtrTy Parser::ParseObjCAtDirectives(ParsedAttributes &Attrs) {
+Parser::DeclGroupPtrTy
+Parser::ParseObjCAtDirectives(ParsedAttributes &Attrs,
+                              ParsedAttributes &DeclSpecAttrs) {
+  Attrs.takeAllFrom(DeclSpecAttrs);
+
   SourceLocation AtLoc = ConsumeToken(); // the "@"
 
   if (Tok.is(tok::code_completion)) {
@@ -54,6 +58,17 @@
     return nullptr;
   }
 
+  switch (Tok.getObjCKeywordID()) {
+  case tok::objc_interface:
+  case tok::objc_protocol:
+  case tok::objc_implementation:
+    break;
+  default:
+    for (const auto &PA : Attrs)
+      if (PA.isGNUAttribute())
+        Diag(PA.getLoc(), diag::err_objc_unexpected_attr);
+  }
+
   Decl *SingleDecl = nullptr;
   switch (Tok.getObjCKeywordID()) {
   case tok::objc_class:
@@ -651,6 +666,7 @@
         break;
 
       ParsedAttributes EmptyAttrs(AttrFactory);
+      ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
 
       // Since we call ParseDeclarationOrFunctionDefinition() instead of
       // ParseExternalDeclaration() below (so that this doesn't parse nested
@@ -664,7 +680,7 @@
       }
 
       allTUVariables.push_back(
-          ParseDeclarationOrFunctionDefinition(EmptyAttrs));
+          ParseDeclarationOrFunctionDefinition(EmptyAttrs, EmptyDeclSpecAttrs));
       continue;
     }
 
@@ -2225,7 +2241,9 @@
     while (!ObjCImplParsing.isFinished() && !isEofOrEom()) {
       ParsedAttributes attrs(AttrFactory);
       MaybeParseCXX11Attributes(attrs);
-      if (DeclGroupPtrTy DGP = ParseExternalDeclaration(attrs)) {
+      ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
+      if (DeclGroupPtrTy DGP =
+              ParseExternalDeclaration(attrs, EmptyDeclSpecAttrs)) {
         DeclGroupRef DG = DGP.get();
         DeclsInGroup.append(DG.begin(), DG.end());
       }
Index: clang/lib/Parse/ParseHLSL.cpp
===================================================================
--- clang/lib/Parse/ParseHLSL.cpp
+++ clang/lib/Parse/ParseHLSL.cpp
@@ -78,8 +78,9 @@
   while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) {
     // FIXME: support attribute on constants inside cbuffer/tbuffer.
     ParsedAttributes Attrs(AttrFactory);
+    ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
 
-    DeclGroupPtrTy Result = ParseExternalDeclaration(Attrs);
+    DeclGroupPtrTy Result = ParseExternalDeclaration(Attrs, EmptyDeclSpecAttrs);
     if (!validateDeclsInsideHLSLBuffer(Result, IdentifierLoc, IsCBuffer,
                                        *this)) {
       T.skipToEnd();
Index: clang/lib/Parse/ParseDeclCXX.cpp
===================================================================
--- clang/lib/Parse/ParseDeclCXX.cpp
+++ clang/lib/Parse/ParseDeclCXX.cpp
@@ -256,7 +256,8 @@
            Tok.isNot(tok::eof)) {
       ParsedAttributes Attrs(AttrFactory);
       MaybeParseCXX11Attributes(Attrs);
-      ParseExternalDeclaration(Attrs);
+      ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
+      ParseExternalDeclaration(Attrs, EmptyDeclSpecAttrs);
     }
 
     // The caller is what called check -- we are simply calling
@@ -359,6 +360,7 @@
 
   ParsedAttributes DeclAttrs(AttrFactory);
   MaybeParseCXX11Attributes(DeclAttrs);
+  ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
 
   if (Tok.isNot(tok::l_brace)) {
     // Reset the source range in DS, as the leading "extern"
@@ -367,7 +369,7 @@
     DS.SetRangeEnd(SourceLocation());
     // ... but anyway remember that such an "extern" was seen.
     DS.setExternInLinkageSpec(true);
-    ParseExternalDeclaration(DeclAttrs, &DS);
+    ParseExternalDeclaration(DeclAttrs, EmptyDeclSpecAttrs, &DS);
     return LinkageSpec ? Actions.ActOnFinishLinkageSpecification(
                              getCurScope(), LinkageSpec, SourceLocation())
                        : nullptr;
@@ -409,7 +411,7 @@
     default:
       ParsedAttributes Attrs(AttrFactory);
       MaybeParseCXX11Attributes(Attrs);
-      ParseExternalDeclaration(Attrs);
+      ParseExternalDeclaration(Attrs, EmptyDeclSpecAttrs);
       continue;
     }
 
@@ -441,7 +443,8 @@
     // FIXME: Factor out a ParseExternalDeclarationWithAttrs.
     ParsedAttributes Attrs(AttrFactory);
     MaybeParseCXX11Attributes(Attrs);
-    ParseExternalDeclaration(Attrs);
+    ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
+    ParseExternalDeclaration(Attrs, EmptyDeclSpecAttrs);
     return Actions.ActOnFinishExportDecl(getCurScope(), ExportDecl,
                                          SourceLocation());
   }
@@ -460,7 +463,8 @@
          Tok.isNot(tok::eof)) {
     ParsedAttributes Attrs(AttrFactory);
     MaybeParseCXX11Attributes(Attrs);
-    ParseExternalDeclaration(Attrs);
+    ParsedAttributes EmptyDeclSpecAttrs(AttrFactory);
+    ParseExternalDeclaration(Attrs, EmptyDeclSpecAttrs);
   }
 
   T.consumeClose();
Index: clang/include/clang/Parse/Parser.h
===================================================================
--- clang/include/clang/Parse/Parser.h
+++ clang/include/clang/Parse/Parser.h
@@ -1603,14 +1603,15 @@
   //===--------------------------------------------------------------------===//
   // C99 6.9: External Definitions.
   DeclGroupPtrTy ParseExternalDeclaration(ParsedAttributes &Attrs,
+                                          ParsedAttributes &DeclSpecAttrs,
                                           ParsingDeclSpec *DS = nullptr);
   bool isDeclarationAfterDeclarator();
   bool isStartOfFunctionDefinition(const ParsingDeclarator &Declarator);
-  DeclGroupPtrTy
-  ParseDeclarationOrFunctionDefinition(ParsedAttributes &Attrs,
-                                       ParsingDeclSpec *DS = nullptr,
-                                       AccessSpecifier AS = AS_none);
+  DeclGroupPtrTy ParseDeclarationOrFunctionDefinition(
+      ParsedAttributes &Attrs, ParsedAttributes &DeclSpecAttrs,
+      ParsingDeclSpec *DS = nullptr, AccessSpecifier AS = AS_none);
   DeclGroupPtrTy ParseDeclOrFunctionDefInternal(ParsedAttributes &Attrs,
+                                                ParsedAttributes &DeclSpecAttrs,
                                                 ParsingDeclSpec &DS,
                                                 AccessSpecifier AS);
 
@@ -1625,7 +1626,8 @@
 
   // Objective-C External Declarations
   void MaybeSkipAttributes(tok::ObjCKeywordKind Kind);
-  DeclGroupPtrTy ParseObjCAtDirectives(ParsedAttributes &Attrs);
+  DeclGroupPtrTy ParseObjCAtDirectives(ParsedAttributes &Attrs,
+                                       ParsedAttributes &DeclSpecAttrs);
   DeclGroupPtrTy ParseObjCAtClassDeclaration(SourceLocation atLoc);
   Decl *ParseObjCAtInterfaceDeclaration(SourceLocation AtLoc,
                                         ParsedAttributes &prefixAttrs);
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