selftest: Cope with no binary argument being supplied to gdb_backtrace

Modern versions of gdb are better than us at working out what binary
is running, and so it is more reliable to omit the binary argument.

This change is required because samba4 no longer supplies this
argument.

Andrew Bartlett

diff --git a/selftest/gdb_backtrace b/selftest/gdb_backtrace
index 553181414992ed5633f315e3eda42f83ece32c70..28ac064bcd400fbfc09b40697f34de422926e0b5 100755 (executable)
--- a/selftest/gdb_backtrace
+++ b/selftest/gdb_backtrace
@@ -58,24 +58,38 @@ test x"${DB_BIN}" = x"" && {
        exit 1
 }
 
-#
+need_binary="no"
+case "${DB}" in
+# These debuggers need the process binary specified:
+       ladebug)
+       need_binary="yes"
+       ;;
+       gdb66)
+       need_binary="yes"
+       ;;
+       dbx)
+       need_binary="yes"
+       ;;
+esac
+
+test x"${need_binary}" = x"yes" && {
+
 # we first try to use /proc/${PID}/exe or /proc/{$PID}/path for solaris
 # then fallback to the binary from the commandline
 # then we search for the commandline argument with
 # 'which'
 #
-test -f "/proc/${PID}/exe" && BINARY="/proc/${PID}/exe"
-test -f "/proc/${PID}/path/a.out" && BINARY=`ls -l /proc/${PID}/path/a.out |sed 's/.*-> //'`
-test x"${BINARY}" = x"" && BINARY="/proc/${PID}/exe"
-test -f "${BINARY}" || BINARY=`which ${BINARY}`
-
-test -f "${BINARY}" || {
-       echo "${BASENAME}: ERROR: Cannot find binary '${BINARY}'."
-       exit 1
+       test -f "/proc/${PID}/exe" && BINARY="/proc/${PID}/exe"
+       test -f "/proc/${PID}/path/a.out" && BINARY=`ls -l /proc/${PID}/path/a.out |sed 's/.*-> //'`
+       test x"${BINARY}" = x"" && BINARY="/proc/${PID}/exe"
+       test -f "${BINARY}" || BINARY=`which ${BINARY}`
+       
+       test -f "${BINARY}" || {
+           echo "${BASENAME}: ERROR: Cannot find binary '${BINARY}'."
+           exit 1
+       }
 }
 
-echo "${BASENAME}: Trying to use ${DB_BIN} on ${BINARY} on PID ${PID}"
-
 BATCHFILE_PRE=/tmp/gdb_backtrace_pre.$$
 BATCHFILE_MAIN=/tmp/gdb_backtrace_main.$$
 case "${DB}" in