Don't assume it will provide an error or null-terminate the string on
truncation, since POSIX doesn't guarantee either behaviour (although
Linux and Darwin at least will do the 'right thing').
llvm-svn: 228613
// running, so mangle the hostname in to the module hash to separate them.
char hostname[256];
hostname[0] = 0;
- if (gethostname(hostname, 255) == 0)
+ if (gethostname(hostname, 255) == 0) {
+ // Forcibly null-terminate the result, since POSIX doesn't require that
+ // truncation result in an error or that truncated names be null-terminated.
+ hostname[sizeof(hostname)-1] = 0;
code = hash_combine(code, StringRef(hostname));
+ }
// Ignore failures in gethostname() by not including the hostname in the hash.
#endif