Jonathan Nieder wrote: > This sounded to me like PR12159, which was fixed by glibc-2.13~64 (Fix > x86-64 strchr propagation of search byte into all bytes of SSE > register, 2010-10-25), but I am not able to reproduce it. I get all > [0] values (pointers to the end of string) I should have said NULL; sorry for the nonsense. Both tests were on a not-too-old amd64 machine (with sse4a, etc). Same result on a Pentium III, too.