Try to get a stack trace from core dumps.

Change-Id: I66d853391f29acfb026d3c246adba9bdf6a4dc36
Reviewed-on: https://code.wireshark.org/review/8400
Reviewed-by: Guy Harris <guy@alum.mit.edu>

diff --git a/test/run_and_catch_crashes b/test/run_and_catch_crashes
index 7cc4c20cf25c22bce63dfead0159a7cdc1449f57..61738a135a7d7160e6fde745bb5116644acbd97e 100755 (executable)
--- a/test/run_and_catch_crashes
+++ b/test/run_and_catch_crashes
@@ -9,12 +9,59 @@
 # the shell will bother to pick up the exit status of earlier commands
 # in the pipeline.
 #
-# XXX - it might be useful to try to catch core dumps and, if we find
-# one, fire up some tool to try to get a stack trace.  That's rather
-# platform-dependent - not all platforms create a core dump file named
-# "core" in the current directory (OS X, for example, defaults to
-# "/cores/core.{PID}"), and the name of the debugger and commands to
-# pass to it are platform-dependent (and you might not even have one
-# installed).
+# XXX - on OS X, core dumps are in /cores/core.{PID}; would they appear
+# elsewhere on any other UN*X?
 #
+rm -f core
 "$@"
+if [ -r core ]
+then
+       #
+       # Core dumped - try to get a stack trace.
+       #
+       # First, find the executable.
+       #
+       if [ -x "$1" ]
+       then
+               executable="$1"
+       else
+               executable=`which "$1"`
+       fi
+
+       if [ ! -z "$executable" ]
+       then
+               #
+               # Found the executable.
+               #
+               # Now, look for a debugger.
+               # XXX - lldb?
+               #
+               dbx=`which dbx`
+               if [ ! -z "$dbx" ]
+               then
+                       #
+                       # Found dbx.  Run it to get a stack trace;
+                       # cause the stack trace to go to the standard
+                       # error.
+                       #
+                       dbx "$executable" core 1>&2 <<EOF
+where
+quit
+EOF
+               else
+                       gdb=`which gdb`
+                       if [ ! -z "$gdb" ]
+                       then
+                               #
+                               # Found gdb.  Run it to get a stack trace;
+                               # cause the stack trace to go to the standard
+                               # error.
+                               #
+                               gdb "$executable" core 1>&2 <<EOF
+backtrace
+quit
+EOF
+                       fi
+               fi
+       fi
+fi