diff options
Diffstat (limited to 'gcc/cp')
| -rw-r--r-- | gcc/cp/typeck.cc | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/cp/typeck.cc b/gcc/cp/typeck.cc index da0e142..16e7d85 100644 --- a/gcc/cp/typeck.cc +++ b/gcc/cp/typeck.cc @@ -8104,11 +8104,13 @@ maybe_warn_about_useless_cast (location_t loc, tree type, tree expr, if (warn_useless_cast && complain & tf_warning) { - if ((TYPE_REF_P (type) - && (TYPE_REF_IS_RVALUE (type) - ? xvalue_p (expr) : lvalue_p (expr)) - && same_type_p (TREE_TYPE (expr), TREE_TYPE (type))) - || same_type_p (TREE_TYPE (expr), type)) + if (TYPE_REF_P (type) + ? ((TYPE_REF_IS_RVALUE (type) + ? xvalue_p (expr) : lvalue_p (expr)) + && same_type_p (TREE_TYPE (expr), TREE_TYPE (type))) + /* Don't warn when converting a class object to a non-reference type, + because that's a common way to create a temporary. */ + : (!glvalue_p (expr) && same_type_p (TREE_TYPE (expr), type))) warning_at (loc, OPT_Wuseless_cast, "useless cast to type %q#T", type); } |