realloc.c

来自「mips架构的bootloader,99左右的版本 但源代码现在没人更新了」· C语言 代码 · 共 26 行

/*************************************************************
 * File: lib/realloc.c
 * Purpose: Part of C runtime library
 * Author: Phil Bunce ([e-mail])
 * Revision History:
 *	970304	Start of revision history
 */

char *malloc();

char *realloc(ptr,size)
char *ptr;
unsigned int size;
{
char *p;
unsigned int sz;

p = malloc(size);
if (!p) return(p);
sz = allocsize(ptr);
memcpy(p,ptr,(sz>size)?size:sz);
free(ptr);
return(p);
}