Mercurial > hg > early-roguelike
annotate rogue5/list.c @ 280:70aa5808c782
Fix potential segfaults at restore related to ctime().
In some games, restore() passes the result of ctime() to mvprintw() or
some other variadic message-formatting function. If ctime() has not
been declared properly, its return type is inferred to be int instead
of char *. This does not cause a warning because the compiler does not
know the correct type of variadic arguments.
On platforms where ints and pointers are not the same size, this can,
probably depending on alignment, result in a segfault that is not easy
to trace.
Including time.h fixes the problem. Some games manually declared
ctime() and avoided the bug. These declarations have also been
replaced with the include.
author | John "Elwin" Edwards |
---|---|
date | Fri, 15 Sep 2017 20:51:10 -0400 |
parents | f502bf60e6e4 |
children |
rev | line source |
---|---|
33
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
1 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
2 * Functions for dealing with linked lists of goodies |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
3 * |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
4 * @(#)list.c 4.12 (Berkeley) 02/05/99 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
5 * |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
6 * Rogue: Exploring the Dungeons of Doom |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
7 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
8 * All rights reserved. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
9 * |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
10 * See the file LICENSE.TXT for full copyright and licensing information. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
11 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
12 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
13 #include <stdlib.h> |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
14 #include <curses.h> |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
15 #include "rogue.h" |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
16 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
17 #ifdef MASTER |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
18 int total = 0; /* total dynamic memory bytes */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
19 #endif |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
20 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
21 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
22 * detach: |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
23 * takes an item out of whatever linked list it might be in |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
24 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
25 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
26 void |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
27 _detach(THING **list, THING *item) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
28 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
29 if (*list == item) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
30 *list = next(item); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
31 if (prev(item) != NULL) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
32 item->l_prev->l_next = next(item); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
33 if (next(item) != NULL) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
34 item->l_next->l_prev = prev(item); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
35 item->l_next = NULL; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
36 item->l_prev = NULL; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
37 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
38 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
39 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
40 * _attach: |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
41 * add an item to the head of a list |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
42 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
43 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
44 void |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
45 _attach(THING **list, THING *item) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
46 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
47 if (*list != NULL) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
48 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
49 item->l_next = *list; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
50 (*list)->l_prev = item; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
51 item->l_prev = NULL; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
52 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
53 else |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
54 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
55 item->l_next = NULL; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
56 item->l_prev = NULL; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
57 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
58 *list = item; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
59 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
60 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
61 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
62 * _free_list: |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
63 * Throw the whole blamed thing away |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
64 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
65 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
66 void |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
67 _free_list(THING **ptr) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
68 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
69 THING *item; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
70 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
71 while (*ptr != NULL) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
72 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
73 item = *ptr; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
74 *ptr = next(item); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
75 discard(item); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
76 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
77 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
78 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
79 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
80 * discard: |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
81 * Free up an item |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
82 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
83 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
84 void |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
85 discard(THING *item) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
86 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
87 #ifdef MASTER |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
88 total--; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
89 #endif |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
90 free(item); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
91 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
92 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
93 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
94 * new_item |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
95 * Get a new item with a specified size |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
96 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
97 THING * |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
98 new_item(void) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
99 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
100 THING *item; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
101 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
102 if ((item = calloc(1, sizeof *item)) == NULL) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
103 #ifdef MASTER |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
104 msg("ran out of memory after %d items", total); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
105 #endif |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
106 return NULL; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
107 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
108 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
109 #ifdef MASTER |