[parser] If there are unmatched braces in a function definition, try to

recover by returning the statements that we parsed so far, instead of
dropping the whole function body.

rdar://10967343

llvm-svn: 153367

1 files changed, 8 insertions, 5 deletions

diff --git a/clang/lib/Parse/ParseStmt.cpp b/clang/lib/Parse/ParseStmt.cpp
index 5fe5e6a2b6a..79b53c3b245 100644
--- a/clang/lib/Parse/ParseStmt.cpp
+++ b/clang/lib/Parse/ParseStmt.cpp
@@ -823,17 +823,20 @@ StmtResult Parser::ParseCompoundStatementBody(bool isStmtExpr) {
       Stmts.push_back(R.release());
   }
 
+  SourceLocation CloseLoc = Tok.getLocation();
+
   // We broke out of the while loop because we found a '}' or EOF.
   if (Tok.isNot(tok::r_brace)) {
     Diag(Tok, diag::err_expected_rbrace);
     Diag(T.getOpenLocation(), diag::note_matching) << "{";
-    return StmtError();
+    // Recover by creating a compound statement with what we parsed so far,
+    // instead of dropping everything and returning StmtError();
+  } else {
+    if (!T.consumeClose())
+      CloseLoc = T.getCloseLocation();
   }
 
-  if (T.consumeClose())
-    return StmtError();
-
-  return Actions.ActOnCompoundStmt(T.getOpenLocation(), T.getCloseLocation(),
+  return Actions.ActOnCompoundStmt(T.getOpenLocation(), CloseLoc,
                                    move_arg(Stmts), isStmtExpr);
 }