diff options
Diffstat (limited to 'gcc/cp/cvt.c')
| -rw-r--r-- | gcc/cp/cvt.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/cp/cvt.c b/gcc/cp/cvt.c index f94488b..e809f0e 100644 --- a/gcc/cp/cvt.c +++ b/gcc/cp/cvt.c @@ -599,11 +599,14 @@ ignore_overflows (tree expr, tree orig) } /* Fold away simple conversions, but make sure TREE_OVERFLOW is set - properly. */ + properly and propagate TREE_NO_WARNING if folding EXPR results + in the same expression code. */ tree cp_fold_convert (tree type, tree expr) { + bool nowarn = TREE_NO_WARNING (expr); + tree conv; if (TREE_TYPE (expr) == type) conv = expr; @@ -626,6 +629,10 @@ cp_fold_convert (tree type, tree expr) conv = fold_convert (type, expr); conv = ignore_overflows (conv, expr); } + + if (nowarn && TREE_CODE (expr) == TREE_CODE (conv)) + TREE_NO_WARNING (conv) = nowarn; + return conv; } |