On Fri, Jun 22, 2018 at 7:07 PM, Stafford Horne <sho...@gmail.com> wrote: > As of GCC 9.0.0 the build is reporting warnings like: > > crypto/ablkcipher.c: In function ‘crypto_ablkcipher_report’: > crypto/ablkcipher.c:374:2: warning: ‘strncpy’ specified bound 64 equals > destination size [-Wstringop-truncation] > strncpy(rblkcipher.geniv, alg->cra_ablkcipher.geniv ?: "<default>", > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > sizeof(rblkcipher.geniv)); > ~~~~~~~~~~~~~~~~~~~~~~~~~ > > This means the strnycpy might create a non null terminated string. Fix this > by > limiting the size of the string copy to include the null terminator.
That could work if the destination buffer was zero-initialized, but it's allocated on stack and is not initialized. Replacing strncpy with strlcpy without changing its arguments should do the right thing. -- Thanks. -- Max
