Hi all. Has anyone had any success building openssh 6.0p1 using clang 2.9? I think I found a compiler bug, at least in the 2.9 that ships with fedora 16 (i386). It causes (at least) ssh-keygen to spin indefinitely eating CPU. I've reduced it to the following test case: $ cat clang-test.c #include <unistd.h> char hostname[64]; int main(int argc, char **argv) { gethostname(hostname, sizeof(hostname)); } $ clang -O2 -D_FORTIFY_SOURCE clang-test.c $ ./a.out [hangs] It works fine with gcc and clang 3.1 (built from source) on the same machine and clang 3.0 on ubuntu x86_64. Removing either -O2 or -D_FORTIFY_SOURCE, or moving hostname from a global to a local variable causes it to work with 2.9. Given that it seems to be fixed in the newer clang versions I don't intend filing a bug unless there's some evidence it affects newer versions too. Thanks. -- Darren Tucker (dtucker at zip.com.au) GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4 37C9 C982 80C7 8FF4 FA69 Good judgement comes with experience. Unfortunately, the experience usually comes from bad judgement.