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realloc.c
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C/C++ Source or Header
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1994-12-12
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382 b
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25 lines
#include <stdlib.h>
#ifdef __GNUC__
#include <inline/exec.h>
#endif
void *realloc(void *ptr,unsigned long size)
{
void *a;
unsigned long l;
if(size)
a=malloc(size);
else
a=NULL;
if(ptr!=NULL)
{ if(a!=NULL)
{ l=((ULONG *)ptr)[-1]-sizeof(ULONG);
l=l<size?l:size;
CopyMem(ptr,a,l);
}
if(size==0||a!=NULL)
free(ptr);
}
return a;
}