diff options
Diffstat (limited to 'contrib/gcc/c-typeck.c')
| -rw-r--r-- | contrib/gcc/c-typeck.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/contrib/gcc/c-typeck.c b/contrib/gcc/c-typeck.c index 897c1e9..dd0fdc5 100644 --- a/contrib/gcc/c-typeck.c +++ b/contrib/gcc/c-typeck.c @@ -2616,7 +2616,10 @@ parser_build_unary_op (enum tree_code code, struct c_expr arg) result.original_code = ERROR_MARK; result.value = build_unary_op (code, arg.value, 0); - overflow_warning (result.value); + + if (TREE_OVERFLOW_P (result.value) && !TREE_OVERFLOW_P (arg.value)) + overflow_warning (result.value); + return result; } @@ -2660,7 +2663,10 @@ parser_build_binary_op (enum tree_code code, struct c_expr arg1, warning (OPT_Waddress, "comparison with string literal results in unspecified behaviour"); - overflow_warning (result.value); + if (TREE_OVERFLOW_P (result.value) + && !TREE_OVERFLOW_P (arg1.value) + && !TREE_OVERFLOW_P (arg2.value)) + overflow_warning (result.value); return result; } @@ -3847,10 +3853,7 @@ convert_for_assignment (tree type, tree rhs, enum impl_conv errtype, } if (TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (rhstype)) - { - overflow_warning (rhs); - return rhs; - } + return rhs; if (coder == VOID_TYPE) { |
