check_return_cast.c (1f5207b7) check_return_cast.c (efe51d0c)
1/*
2 * Copyright (C) 2012 Oracle.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *

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23
24static int my_id;
25
26static void match_return(struct expression *ret_value)
27{
28 struct symbol *func_type = get_real_base_type(cur_func_sym);
29 sval_t sval;
30
1/*
2 * Copyright (C) 2012 Oracle.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *

--- 14 unchanged lines hidden (view full) ---

23
24static int my_id;
25
26static void match_return(struct expression *ret_value)
27{
28 struct symbol *func_type = get_real_base_type(cur_func_sym);
29 sval_t sval;
30
31 if (!func_type || func_type->type != SYM_FN)
32 return;
33 func_type = get_real_base_type(func_type);
31 if (!func_type)
32 return;
33 if (!type_unsigned(func_type))
34 return;
35 if (type_bits(func_type) > 16)
36 return;
37 if (!get_fuzzy_min(ret_value, &sval))
38 return;
39 if (sval_is_positive(sval) || sval_cmp_val(sval, -1) == 0)
40 return;
41
42 sm_warning("signedness bug returning '%s'", sval_to_str(sval));
43}
44
45void check_return_cast(int id)
46{
47 my_id = id;
48 add_hook(&match_return, RETURN_HOOK);
49}
34 if (!func_type)
35 return;
36 if (!type_unsigned(func_type))
37 return;
38 if (type_bits(func_type) > 16)
39 return;
40 if (!get_fuzzy_min(ret_value, &sval))
41 return;
42 if (sval_is_positive(sval) || sval_cmp_val(sval, -1) == 0)
43 return;
44
45 sm_warning("signedness bug returning '%s'", sval_to_str(sval));
46}
47
48void check_return_cast(int id)
49{
50 my_id = id;
51 add_hook(&match_return, RETURN_HOOK);
52}