Pass the source range when diagnosing an unknown attribute

This way, the whole attribute gets highlighted with diagnostics instead
of just the scope name in an attribute like [[clang::unknown]].

Author: AaronBallman

clang/lib/Parse/ParseDecl.cpp

@@ -1593,7 +1593,8 @@ void Parser::ProhibitCXX11Attributes(ParsedAttributesWithRange &Attrs,
     if (!AL.isCXX11Attribute() && !AL.isC2xAttribute())
       continue;
     if (AL.getKind() == ParsedAttr::UnknownAttribute)
-      Diag(AL.getLoc(), diag::warn_unknown_attribute_ignored) << AL;
+      Diag(AL.getLoc(), diag::warn_unknown_attribute_ignored)
+          << AL << AL.getRange();
     else {
       Diag(AL.getLoc(), DiagID) << AL;
       AL.setInvalid();

clang/lib/Sema/SemaDeclAttr.cpp

@@ -2055,7 +2055,8 @@ bool Sema::CheckAttrNoArgs(const ParsedAttr &Attrs) {
 bool Sema::CheckAttrTarget(const ParsedAttr &AL) {
   // Check whether the attribute is valid on the current target.
   if (!AL.existsInTarget(Context.getTargetInfo())) {
-    Diag(AL.getLoc(), diag::warn_unknown_attribute_ignored) << AL;
+    Diag(AL.getLoc(), diag::warn_unknown_attribute_ignored)
+        << AL << AL.getRange();
     AL.setInvalid();
     return true;
   }
@@ -7362,7 +7363,7 @@ static void ProcessDeclAttribute(Sema &S, Scope *scope, Decl *D,
            AL.isDeclspecAttribute()
                ? (unsigned)diag::warn_unhandled_ms_attribute_ignored
                : (unsigned)diag::warn_unknown_attribute_ignored)
-        << AL;
+        << AL << AL.getRange();
     return;
   }
 

clang/lib/Sema/SemaDeclCXX.cpp

@@ -2612,7 +2612,7 @@ Sema::ActOnBaseSpecifier(Decl *classdecl, SourceRange SpecifierRange,
     Diag(AL.getLoc(), AL.getKind() == ParsedAttr::UnknownAttribute
                           ? (unsigned)diag::warn_unknown_attribute_ignored
                           : (unsigned)diag::err_base_specifier_attribute)
-        << AL;
+        << AL << AL.getRange();
   }
 
   TypeSourceInfo *TInfo = nullptr;

clang/lib/Sema/SemaStmtAttr.cpp

@@ -409,7 +409,7 @@ static Attr *ProcessStmtAttribute(Sema &S, Stmt *St, const ParsedAttr &A,
     S.Diag(A.getLoc(), A.isDeclspecAttribute()
                            ? (unsigned)diag::warn_unhandled_ms_attribute_ignored
                            : (unsigned)diag::warn_unknown_attribute_ignored)
-        << A;
+        << A << A.getRange();
     return nullptr;
   case ParsedAttr::AT_FallThrough:
     return handleFallThroughAttr(S, St, A, Range);

clang/lib/Sema/SemaType.cpp

@@ -8091,7 +8091,7 @@ static void processTypeAttrs(TypeProcessingState &state, QualType &type,
       if (attr.isCXX11Attribute() && TAL == TAL_DeclChunk)
         state.getSema().Diag(attr.getLoc(),
                              diag::warn_unknown_attribute_ignored)
-            << attr;
+            << attr << attr.getRange();
       break;
 
     case ParsedAttr::IgnoredAttribute: