commit 42926a065572a63610f651bb1589fe1217e2e0a7
author Richard Smith <richard-llvm@metafoo.co.uk> Tue Jul 24 20:24:58 2012 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Tue Jul 24 20:24:58 2012 +0000
tree ca71dc9dbd1c05fe9fec6b665b331079064dab60
parent 833850bc5d9991c1b0e1fd408b68b6217938ce63

Pedantic -pedantic correction. Duplicate cv-qualifiers are permitted in C++11
unless they appear in a decl-specifier-seq.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160688 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Sema/DeclSpec.h

diff --git a/include/clang/Sema/DeclSpec.h b/include/clang/Sema/DeclSpec.h
index 0f323bd..7999748 100644
--- a/include/clang/Sema/DeclSpec.h
+++ b/include/clang/Sema/DeclSpec.h
@@ -598,7 +598,8 @@
   }
 
   bool SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec,
-                   unsigned &DiagID, const LangOptions &Lang);
+                   unsigned &DiagID, const LangOptions &Lang,
+                   bool IsTypeSpec);
 
   bool SetFunctionSpecInline(SourceLocation Loc, const char *&PrevSpec,
                              unsigned &DiagID);

lib/Parse/ParseDecl.cpp

diff --git a/lib/Parse/ParseDecl.cpp b/lib/Parse/ParseDecl.cpp
index c6a7d05..b2a6b4b 100644
--- a/lib/Parse/ParseDecl.cpp
+++ b/lib/Parse/ParseDecl.cpp
@@ -2666,15 +2666,15 @@
     // cv-qualifier:
     case tok::kw_const:
       isInvalid = DS.SetTypeQual(DeclSpec::TQ_const, Loc, PrevSpec, DiagID,
-                                 getLangOpts());
+                                 getLangOpts(), /*IsTypeSpec*/true);
       break;
     case tok::kw_volatile:
       isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
-                                 getLangOpts());
+                                 getLangOpts(), /*IsTypeSpec*/true);
       break;
     case tok::kw_restrict:
       isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
-                                 getLangOpts());
+                                 getLangOpts(), /*IsTypeSpec*/true);
       break;
 
     // C++ typename-specifier:
@@ -3869,15 +3869,15 @@
 
     case tok::kw_const:
       isInvalid = DS.SetTypeQual(DeclSpec::TQ_const   , Loc, PrevSpec, DiagID,
-                                 getLangOpts());
+                                 getLangOpts(), /*IsTypeSpec*/false);
       break;
     case tok::kw_volatile:
       isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
-                                 getLangOpts());
+                                 getLangOpts(), /*IsTypeSpec*/false);
       break;
     case tok::kw_restrict:
       isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
-                                 getLangOpts());
+                                 getLangOpts(), /*IsTypeSpec*/false);
       break;
 
     // OpenCL qualifiers:

lib/Sema/DeclSpec.cpp

diff --git a/lib/Sema/DeclSpec.cpp b/lib/Sema/DeclSpec.cpp
index 3cce8cb..f3ec565 100644
--- a/lib/Sema/DeclSpec.cpp
+++ b/lib/Sema/DeclSpec.cpp
@@ -668,9 +668,11 @@
 }
 
 bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec,
-                           unsigned &DiagID, const LangOptions &Lang) {
-  // Duplicates turn into warnings pre-C99.
-  if ((TypeQualifiers & T) && !Lang.C99)
+                           unsigned &DiagID, const LangOptions &Lang,
+                           bool IsTypeSpec) {
+  // Duplicates are permitted in C99, and are permitted in C++11 unless the
+  // cv-qualifier appears as a type-specifier.
+  if ((TypeQualifiers & T) && !Lang.C99 && (!Lang.CPlusPlus0x || IsTypeSpec))
     return BadSpecifier(T, T, PrevSpec, DiagID);
   TypeQualifiers |= T;
 

test/Parser/cxx0x-decl.cpp

diff --git a/test/Parser/cxx0x-decl.cpp b/test/Parser/cxx0x-decl.cpp
index 9a220ca..a6fc49c 100644
--- a/test/Parser/cxx0x-decl.cpp
+++ b/test/Parser/cxx0x-decl.cpp
@@ -25,3 +25,6 @@
   void h() = delete;; // ok
   void i() = delete;;; // expected-warning {{extra ';' after member function definition}}
 };
+
+int *const const p = 0; // ok
+const const int *q = 0; // expected-warning {{duplicate 'const' declaration specifier}}