On Sunday 25 August 2013 15:40:49 Kurt Roeckx wrote: > On Sun, Aug 25, 2013 at 09:18:42PM +0200, Florian Weimer wrote: > > memcpy(dst, data_scn->d.d_buf + ndx * sizeof(GElf_auxv_t), > > sizeof(GElf_axuv_t)); > > d_buf is a void *, and I don't think that has defined behavior either. It > should probably be: > memcpy(dst, (char *)data_scn->d.d_buf + ndx * sizeof(GElf_auxv_t), > sizeof(GElf_axuv_t));
you're right that adding to a void* is undefined. but practically speaking, glibc requires gcc which has known semantics (the same if you cast it to a char*), so i wonder if the cast is necessary. -mike
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