Properly track l-paren of a CXXFucntionalCastExpr.

In addition to storing more useful information in the AST, this
fixes a semantic check in template instantiation which checks whether
the l-paren location is valid.

Fixes PR16903.

llvm-svn: 188495

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp
index 5c1a27da365..3eeb53e6201 100644
--- a/clang/lib/AST/Expr.cpp
+++ b/clang/lib/AST/Expr.cpp
@@ -2177,7 +2177,7 @@ bool Expr::isUnusedResultAWarning(const Expr *&WarnE, SourceLocation &Loc,
     WarnE = this;
     if (const CXXFunctionalCastExpr *CXXCE =
             dyn_cast<CXXFunctionalCastExpr>(this)) {
-      Loc = CXXCE->getTypeBeginLoc();
+      Loc = CXXCE->getLocStart();
       R1 = CXXCE->getSubExpr()->getSourceRange();
     } else {
       const CStyleCastExpr *CStyleCE = cast<CStyleCastExpr>(this);