1 /**************************************************************************** 2 * Copyright (c) 1998,2000 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Thomas E. Dickey <dickey@clark.net> 1998 * 31 ****************************************************************************/ 32 33 /* 34 * Wrapper for malloc/realloc. Standard implementations allow realloc with 35 * a null pointer, but older libraries may not (e.g., SunOS). 36 * 37 * Also if realloc fails, we discard the old memory to avoid leaks. 38 */ 39 40 #include <curses.priv.h> 41 42 MODULE_ID("$Id: doalloc.c,v 1.7 2000/12/10 02:55:07 tom Exp $") 43 44 NCURSES_EXPORT(void *) 45 _nc_doalloc(void *oldp, size_t amount) 46 { 47 void *newp; 48 49 if (oldp != 0) { 50 if ((newp = realloc(oldp, amount)) == 0) { 51 free(oldp); 52 errno = ENOMEM; /* just in case 'free' reset */ 53 } 54 } else { 55 newp = typeMalloc(char, amount); 56 } 57 return newp; 58 } 59 60 #if !HAVE_STRDUP 61 NCURSES_EXPORT(char *) 62 _nc_strdup(const char *src) 63 { 64 char *dst; 65 if (src != 0) { 66 dst = typeMalloc(char, strlen(src) + 1); 67 if (dst != 0) { 68 (void) strcpy(dst, src); 69 } 70 } else { 71 dst = 0; 72 } 73 return dst; 74 } 75 #endif 76