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Function silc_srealloc SYNOPSIS
        void *silc_srealloc(SilcStack stack, SilcUInt32 old_size,
                            void *ptr, SilcUInt32 size);
DESCRIPTION
        Change the size of the memory block indicated by `ptr' to the new
        size of `size' bytes.  The contents of `ptr' will not be changed.
        If `ptr' is NULL the call is equivalent to silc_smalloc.  If `size'
        is zero (0) error will occur.  Returns NULL on error and the old
        pointer remain intact.
NOTES
        This function reallocates successfully only if the previous allocation
        to `stack' was `ptr'.  If there was another memory allocation between
        allocating `ptr' and this call, this routine will return NULL.  The
        NULL is also returned if the `size' does not fit to current stack
        and allocating new block would require slow copying of the data.  It
        is left to the caller to decide whether to allocate new pointer and
        copy the old data in case this function returns NULL.

        This function can be used to reallocate only aligned memory allocated
        with silc_smalloc.

        If `stack' is NULL this function calls silc_realloc.
SILC Memory Interface silc_malloc silc_calloc silc_realloc silc_free silc_memdup silc_smalloc silc_smalloc_ua silc_scalloc silc_srealloc silc_srealloc_ua silc_smemdup silc_sstrdup

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