diff options
Diffstat (limited to 'gcc/convert.c')
| -rw-r--r-- | gcc/convert.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/gcc/convert.c b/gcc/convert.c index 139d790..bfe18fb 100644 --- a/gcc/convert.c +++ b/gcc/convert.c @@ -886,6 +886,12 @@ convert_to_integer_1 (tree type, tree expr, bool dofold) break; case NEGATE_EXPR: + /* Using unsigned arithmetic for signed types may hide overflow + bugs. */ + if (!TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (expr, 0))) + && sanitize_flags_p (SANITIZE_SI_OVERFLOW)) + break; + /* Fall through. */ case BIT_NOT_EXPR: /* This is not correct for ABS_EXPR, since we must test the sign before truncation. */ @@ -902,12 +908,7 @@ convert_to_integer_1 (tree type, tree expr, bool dofold) TYPE_UNSIGNED (typex)); if (!TYPE_UNSIGNED (typex)) - { - /* Using unsigned arithmetic may hide overflow bugs. */ - if (sanitize_flags_p (SANITIZE_SI_OVERFLOW)) - break; - typex = unsigned_type_for (typex); - } + typex = unsigned_type_for (typex); return convert (type, fold_build1 (ex_form, typex, convert (typex, |