1 /* $OpenBSD: doalloc.c,v 1.3 1999/03/15 19:12:23 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Thomas E. Dickey <dickey@clark.net> 1998 * 33 ****************************************************************************/ 34 35 36 /* 37 * Wrapper for malloc/realloc. Standard implementations allow realloc with 38 * a null pointer, but older libraries may not (e.g., SunOS). 39 * 40 * Also if realloc fails, we discard the old memory to avoid leaks. 41 */ 42 43 #include <curses.priv.h> 44 45 MODULE_ID("$From: doalloc.c,v 1.5 1999/03/14 12:25:27 tom Exp $") 46 47 void *_nc_doalloc(void *oldp, size_t amount) 48 { 49 void *newp; 50 51 if (oldp != 0) { 52 if ((newp = realloc(oldp, amount)) == 0) { 53 free(oldp); 54 errno = ENOMEM; /* just in case 'free' reset */ 55 } 56 } else { 57 newp = typeMalloc(char, amount); 58 } 59 return newp; 60 } 61 62 #if !HAVE_STRDUP 63 char *_nc_strdup(const char *src) 64 { 65 char *dst; 66 if (src != 0) { 67 *dst = typeMalloc(char, strlen(src) + 1); 68 if (dst != 0) { 69 (void)strcpy(dst, src); 70 } 71 } else { 72 dst = 0; 73 } 74 return dst; 75 } 76 #endif 77