QUOTE
While debugging a devel/libunwind failure in an armv7 program running on
aarch64,
I found that the program crashes with ENOSYS while calling __syscall(). Here is
a reproducer:
#include <sys/mman.h>
#include <sys/syscall.h>
#include <unistd.h>
int main()
{
__syscall(SYS_mmap, 0, 4096, 3, MAP_ANON|MAP_PRIVATE, -1, 0);
}
This is effectively what the GET_MEMORY() macro in libunwind does. Expected
output: nothing. Actual output: Bad system call (core dumped).
I'll work around this failure in libunwind for now, but please fix this for the
future.
END QUOTE
But I just tested trying the program in a chroot to an armv7
world directory tree and it fails there too. It is not just
lib32 that fails.
===
Mark Millard
marklmi at yahoo.com
