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-rw-r--r--clang/lib/Parse/ParseExpr.cpp18
1 files changed, 18 insertions, 0 deletions
diff --git a/clang/lib/Parse/ParseExpr.cpp b/clang/lib/Parse/ParseExpr.cpp
index da759c76522..36a302e52e6 100644
--- a/clang/lib/Parse/ParseExpr.cpp
+++ b/clang/lib/Parse/ParseExpr.cpp
@@ -205,6 +205,24 @@ ExprResult Parser::ParseConstantExpression(TypeCastState isTypeCast) {
return Actions.ActOnConstantExpression(Res);
}
+/// \brief Parse a constraint-expression.
+///
+/// \verbatim
+/// constraint-expression: [Concepts TS temp.constr.decl p1]
+/// logical-or-expression
+/// \endverbatim
+ExprResult Parser::ParseConstraintExpression() {
+ // FIXME: this may erroneously consume a function-body as the braced
+ // initializer list of a compound literal
+ //
+ // FIXME: this may erroneously consume a parenthesized rvalue reference
+ // declarator as a parenthesized address-of-label expression
+ ExprResult LHS(ParseCastExpression(/*isUnaryExpression=*/false));
+ ExprResult Res(ParseRHSOfBinaryExpression(LHS, prec::LogicalOr));
+
+ return Res;
+}
+
bool Parser::isNotExpressionStart() {
tok::TokenKind K = Tok.getKind();
if (K == tok::l_brace || K == tok::r_brace ||
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