implement ast building and trivial semantic analysis of stmt exprs.
This implements test/Sema/stmt_exprs.c
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40465 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Parse/ParseExpr.cpp b/Parse/ParseExpr.cpp
index 467dc1d..de0a2a2 100644
--- a/Parse/ParseExpr.cpp
+++ b/Parse/ParseExpr.cpp
@@ -539,7 +539,7 @@
case tok::kw___real: // unary-expression: '__real' cast-expression [GNU]
case tok::kw___imag: // unary-expression: '__imag' cast-expression [GNU]
case tok::kw___extension__:{//unary-expression:'__extension__' cast-expr [GNU]
- // FIXME: Extension not handled correctly here!
+ // FIXME: Extension should silence extwarns in subexpressions.
SourceLocation SavedLoc = ConsumeToken();
Res = ParseCastExpression(false);
if (!Res.isInvalid)
@@ -853,15 +853,19 @@
SourceLocation &RParenLoc) {
assert(Tok.getKind() == tok::l_paren && "Not a paren expr!");
SourceLocation OpenLoc = ConsumeParen();
- ExprResult Result(false);
+ ExprResult Result(true);
CastTy = 0;
if (ExprType >= CompoundStmt && Tok.getKind() == tok::l_brace &&
!getLang().NoExtensions) {
Diag(Tok, diag::ext_gnu_statement_expr);
- ParseCompoundStatement();
+ Parser::StmtResult Stmt = ParseCompoundStatement();
ExprType = CompoundStmt;
- // TODO: Build AST for GNU compound stmt.
+
+ // If the substmt parsed correctly, build the AST node.
+ if (!Stmt.isInvalid && Tok.getKind() == tok::r_paren)
+ Result = Actions.ParseStmtExpr(OpenLoc, Stmt.Val, Tok.getLocation());
+
} else if (ExprType >= CompoundLiteral && isTypeSpecifierQualifier()) {
// Otherwise, this is a compound literal expression or cast expression.
TypeTy *Ty = ParseTypeName();