Mark Esler wrote: > I believe Gnulib contains memcpy calls on overlapping memory and that > commit 3e7178b337e3a83df9e4f36a4aef516f089e3796 was incomplete. > > Please see https://gitlab.com/gsasl/gsasl/-/issues/4 for details.
The comment from [1] is correct. Your statement "If left_over >= 16, memcpy will overwrite the source as it is being copied." is incorrect. ctx->buffer and &ctx->buffer[16] differ by 16 units, each unit being uint32_t, that is 4 bytes wide. So these pointers differ by 64 bytes. Since left_over ≤ 64, there is no overlap. Bruno [1] https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=3e7178b337e3a83df9e4f36a4aef516f089e3796
