# define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
#endif
-/* In Tru64 use the 4.4BSD struct msghdr, not the 4.3 one */
-#if defined(__osf__) && defined(__alpha) && !defined(_SOCKADDR_LEN)
-# define _SOCKADDR_LEN
+/* In Tru64 use the 4.4BSD struct msghdr, not the 4.3 one.
+ * This is important for using IPv6.
+ * For OSF/1 3.2, however, defining _SOCKADDR_LEN would be
+ * a bad idea since it breaks send() and recv(). */
+#if defined(__osf__) && defined(__alpha) && !defined(_SOCKADDR_LEN) && !defined(DEC_OSF1_3_X)
+# define _SOCKADDR_LEN
#endif
#if defined(HAS_SOCKET) && !defined(VMS) && !defined(WIN32) /* VMS/WIN32 handle sockets via vmsish.h/win32.h */
# define PERL_FPU_INIT fpsetmask(0);
# else
# if defined(SIGFPE) && defined(SIG_IGN)
-# define PERL_FPU_INIT PL_sigfpe_saved = signal(SIGFPE, SIG_IGN)
+# define PERL_FPU_INIT PL_sigfpe_saved = signal(SIGFPE, SIG_IGN);
# define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
# define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
# else
# include "iperlsys.h"
#endif
-/* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0 */
+/* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
+ * Note that the USE_HASH_SEED and USE_HASH_SEED_EXPLICIT are *NOT*
+ * defined by Configure, despite their names being similar to the
+ * other defines like USE_ITHREADS. Configure in fact knows nothing
+ * about the randomised hashes. Therefore to enable/disable the hash
+ * randomisation defines use the Configure -Accflags=... instead. */
#if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED) && !defined(USE_HASH_SEED_EXPLICIT)
-# define USE_HASH_SEED_EXPLICIT
+# define USE_HASH_SEED
#endif
#include "regexp.h"