Make the unused expression warning a bit less aggressive (found in PHP

code).

llvm-svn: 51276

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp
index cd495bc63e4..e327ffb9117 100644
--- a/clang/lib/AST/Expr.cpp
+++ b/clang/lib/AST/Expr.cpp
@@ -336,6 +336,10 @@ bool Expr::hasLocalSideEffect() const {
       return cast<CastExpr>(this)->getSubExpr()->hasLocalSideEffect();
     return false;
 
+  case ImplicitCastExprClass:
+    // Check the operand, since implicit casts are inserted by Sema
+    return cast<ImplicitCastExpr>(this)->getSubExpr()->hasLocalSideEffect();
+
   case CXXDefaultArgExprClass:
     return cast<CXXDefaultArgExpr>(this)->getExpr()->hasLocalSideEffect();
   }