Codebase list mg / 2dc548d
DragonFly BSD finally has reallocarray Leonid Bobrov 5 years ago
3 changed file(s) with 1 addition(s) and 49 deletion(s). Raw diff Collapse all Expand all
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-5
CMakeLists.txt less more
88 cmode.c cscope.c dired.c grep.c tags.c
99 )
1010
11 if(CMAKE_SYSTEM_NAME MATCHES "DragonFly")
12 set (REALLOC_SRC reallocarray.c)
13 endif()
14
15 add_executable (mg ${MG_SRC} ${REALLOC_SRC})
11 add_executable (mg ${MG_SRC})
1612
1713 find_package (PkgConfig REQUIRED)
1814 pkg_check_modules (NCURSES REQUIRED ncurses)
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Makefile less more
2222 #
2323 SRCS+= cmode.c cscope.c dired.c grep.c tags.c
2424
25 OS!= uname
26
27 .if ${OS:MDragonFly}
28 SRCS+= reallocarray.c
29 .endif
30
3125 afterinstall:
3226 ${INSTALL} -d -o root -g wheel ${DESTDIR}${DOCDIR}/mg
3327 ${INSTALL} ${INSTALL_COPY} -o ${DOCOWN} -g ${DOCGRP} -m ${DOCMODE} \
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reallocarray.c less more
0 /* $OpenBSD: reallocarray.c,v 1.3 2015/09/13 08:31:47 guenther Exp $ */
1 /*
2 * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <sys/types.h>
18 #include <errno.h>
19 #include <stdint.h>
20 #include <stdlib.h>
21
22 /*
23 * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
24 * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
25 */
26 #define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
27
28 void *
29 reallocarray(void *optr, size_t nmemb, size_t size)
30 {
31 if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
32 nmemb > 0 && SIZE_MAX / nmemb < size) {
33 errno = ENOMEM;
34 return NULL;
35 }
36 return realloc(optr, size * nmemb);
37 }