{ return 0; } 
{ if (slen > *dlen) return -EINVAL; memcpy(dst, src, slen); *dlen = slen; return 0; } 
static int null_compress(void *ctx, const u8 *src, unsigned int slen,                         u8 *dst, unsigned int *dlen){ return 0; }
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/d0856009dbaf8eca2269d4129bb83940c0d95054/crypto_null.c/buggy/crypto/crypto_null.c