[Bug libc/10162] stratcliff test segfaults on ia64

["pasky at suse dot cz" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From pasky at suse dot cz  2009-11-09 17:59 -------
Unfortunately, this seems to break when calling memchr() on a shared mmap()ed
buffer - this crashes now:

#include<sys/mman.h>
#include<string.h>
#include<unistd.h>
#include<fcntl.h>
int main() {
  void *m = mmap(NULL, 53, PROT_READ, MAP_SHARED, open("/etc/passwd", O_RDONLY
), 0);
  volatile void *q = memchr(m, ':', 53);
}

since memchr() tries to access m-8. I have only very little idea IA64, I think
it is because the kernel cannot fill p[] in time, causing the speculative load
to fail, and the assumption that speculative load fails only if the mapping is
inaccessible is invalid?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


http://sourceware.org/bugzilla/show_bug.cgi?id=10162

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