Produce a diagnostic if alignas is applied to an expression. Neither C11 nor
C++11 allows that.
llvm-svn: 173789
diff --git a/clang/lib/Parse/ParseExpr.cpp b/clang/lib/Parse/ParseExpr.cpp
index 9c788a1..86cf657 100644
--- a/clang/lib/Parse/ParseExpr.cpp
+++ b/clang/lib/Parse/ParseExpr.cpp
@@ -1609,11 +1609,11 @@
/// unary-expression: [C99 6.5.3]
/// 'sizeof' unary-expression
/// 'sizeof' '(' type-name ')'
-/// [C++0x] 'sizeof' '...' '(' identifier ')'
+/// [C++11] 'sizeof' '...' '(' identifier ')'
/// [GNU] '__alignof' unary-expression
/// [GNU] '__alignof' '(' type-name ')'
/// [C11] '_Alignof' '(' type-name ')'
-/// [C++0x] 'alignof' '(' type-id ')'
+/// [C++11] 'alignof' '(' type-id ')'
/// \endverbatim
ExprResult Parser::ParseUnaryExprOrTypeTraitExpression() {
assert((Tok.is(tok::kw_sizeof) || Tok.is(tok::kw___alignof) ||
@@ -1623,7 +1623,7 @@
Token OpTok = Tok;
ConsumeToken();
- // [C++0x] 'sizeof' '...' '(' identifier ')'
+ // [C++11] 'sizeof' '...' '(' identifier ')'
if (Tok.is(tok::ellipsis) && OpTok.is(tok::kw_sizeof)) {
SourceLocation EllipsisLoc = ConsumeToken();
SourceLocation LParenLoc, RParenLoc;
@@ -1694,6 +1694,9 @@
CastTy.getAsOpaquePtr(),
CastRange);
+ if (OpTok.is(tok::kw_alignof) || OpTok.is(tok::kw__Alignof))
+ Diag(OpTok, diag::ext_alignof_expr) << OpTok.getIdentifierInfo();
+
// If we get here, the operand to the sizeof/alignof was an expresion.
if (!Operand.isInvalid())
Operand = Actions.ActOnUnaryExprOrTypeTraitExpr(OpTok.getLocation(),