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Add check for integer casts

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This commit is contained in:
gingerBill
2024-06-29 12:13:41 +01:00
parent c18c0a3364
commit e46d772b6d
1 changed files with 15 additions and 8 deletions
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src/check_expr.cpp
+15 -8
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@@ -3505,17 +3505,24 @@ gb_internal bool check_transmute(CheckerContext *c, Ast *node, Operand *o, Type
if (c->pkg && (c->pkg->kind == Package_Runtime || c->pkg->kind == Package_Builtin)) { if (c->pkg && (c->pkg->kind == Package_Runtime || c->pkg->kind == Package_Builtin)) {
is_runtime = true; is_runtime = true;
} }
if (are_types_identical(src_t, dst_t) && !is_runtime) { if (are_types_identical(src_t, dst_t)) {
gbString oper_str = expr_to_string(o->expr); if (!is_runtime) {
gbString to_type = type_to_string(dst_t); gbString oper_str = expr_to_string(o->expr);
error(o->expr, "Unneeded transmute of '%s' to identical type '%s'", oper_str, to_type); gbString to_type = type_to_string(dst_t);
gb_string_free(oper_str); error(o->expr, "Unneeded transmute of '%s' to identical type '%s'", oper_str, to_type);
gb_string_free(to_type); gb_string_free(oper_str);
gb_string_free(to_type);
}
} else if (is_type_internally_pointer_like(src_t) && } else if (is_type_internally_pointer_like(src_t) &&
is_type_internally_pointer_like(dst_t)) { is_type_internally_pointer_like(dst_t)) {
gbString to_type = type_to_string(dst_t); error(o->expr, "Use of 'transmute' where 'cast' would be preferred since the types are pointer-like");
error(o->expr, "Use of 'transmute' where 'cast' would be preferred since the types are pointer-like", to_type); } else if (is_type_integer(src_t) && is_type_integer(dst_t) &&
types_have_same_internal_endian(src_t, dst_t)) {
gbString oper_type = type_to_string(src_t);
gbString to_type = type_to_string(dst_t);
error(o->expr, "Use of 'transmute' where 'cast' would be preferred since both are integers of the same endianness, from '%s' to '%s'", oper_type, to_type);
gb_string_free(to_type); gb_string_free(to_type);
gb_string_free(oper_type);
} }
} }
} }