X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/c422d3ab0f6de2d38512a4566637bc47df291e74..2d02497b02b040bd885825dba9230f86a8ffce0e:/machdep.c

diff --git a/machdep.c b/machdep.c
index fdfcac59..1f086161 100644
--- a/machdep.c
+++ b/machdep.c
@@ -19,11 +19,6 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/machdep.c,v 1.10 2002-09-05 21:25:36 guy Exp $ (LBL)";
-#endif
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -34,26 +29,36 @@ static const char rcsid[] =
  * need to do to get it defined?  This is clearly wrong, as we shouldn't
  * have to include UNIX or Windows system header files to get it.
  */
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
 
 #ifndef HAVE___ATTRIBUTE__
 #define __attribute__(x)
 #endif /* HAVE___ATTRIBUTE__ */
 
-#define _U_	__attribute__((unused))
-
 #ifdef __osf__
 #include <sys/sysinfo.h>
 #include <sys/proc.h>
 
 #if !defined(HAVE_SNPRINTF)
 int snprintf(char *, size_t, const char *, ...)
-     __attribute__((format(printf, 3, 4)));
+#ifdef __ATTRIBUTE___FORMAT_OK
+     __attribute__((format(printf, 3, 4)))
+#endif /* __ATTRIBUTE___FORMAT_OK */
+     ;
 #endif /* !defined(HAVE_SNPRINTF) */
 #endif /* __osf__ */
 
 #include "machdep.h"
 
+/*
+ * On platforms where the CPU doesn't support unaligned loads, force
+ * unaligned accesses to abort with SIGBUS, rather than being fixed
+ * up (slowly) by the OS kernel; on those platforms, misaligned accesses
+ * are bugs, and we want tcpdump to crash so that the bugs are reported.
+ *
+ * The only OS on which this is necessary is DEC OSF/1^W^WDigital
+ * UNIX^W^WTru64 UNIX.
+ */
 int
 abort_on_misalignment(char *ebuf _U_, size_t ebufsiz _U_)
 {