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-rw-r--r--contrib/tcpdump/machdep.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/contrib/tcpdump/machdep.c b/contrib/tcpdump/machdep.c
index 3b8c966..7b259ae 100644
--- a/contrib/tcpdump/machdep.c
+++ b/contrib/tcpdump/machdep.c
@@ -50,6 +50,15 @@ int snprintf(char *, size_t, const char *, ...)
#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_)
{
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