diff options
Diffstat (limited to 'src/check_expr.cpp')
| -rw-r--r-- | src/check_expr.cpp | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/src/check_expr.cpp b/src/check_expr.cpp index df138f77c..f4d5cc5a4 100644 --- a/src/check_expr.cpp +++ b/src/check_expr.cpp @@ -2332,14 +2332,24 @@ gb_internal bool check_integer_exceed_suggestion(CheckerContext *c, Operand *o, } BigInt *bi = &o->value.value_integer; if (is_type_unsigned(type)) { + BigInt one = big_int_make_u64(1); + BigInt max_size = big_int_make_u64(1); + BigInt bits = big_int_make_i64(bit_size); + big_int_shl_eq(&max_size, &bits); + big_int_sub_eq(&max_size, &one); + if (big_int_is_neg(bi)) { error_line("\tA negative value cannot be represented by the unsigned integer type '%s'\n", b); + BigInt dst = {}; + big_int_neg(&dst, bi); + if (big_int_cmp(&dst, &max_size) < 0) { + big_int_sub_eq(&dst, &one); + String dst_str = big_int_to_string(temporary_allocator(), &dst); + gbString t = type_to_string(type); + error_line("\tSuggestion: ~%s(%.*s)\n", t, LIT(dst_str)); + gb_string_free(t); + } } else { - BigInt one = big_int_make_u64(1); - BigInt max_size = big_int_make_u64(1); - BigInt bits = big_int_make_i64(bit_size); - big_int_shl_eq(&max_size, &bits); - big_int_sub_eq(&max_size, &one); String max_size_str = big_int_to_string(temporary_allocator(), &max_size); if (size_changed) { |