gcc-gdb-test.exp (gdb-test): Pass -- as first argument to send_log.

	* lib/gcc-gdb-test.exp (gdb-test): Pass -- as first argument
	to send_log.

From-SVN: r193777

gcc/testsuite/ChangeLog

+2012-11-24  Hans-Peter Nilsson  <hp@bitrange.com>
+
+	* lib/gcc-gdb-test.exp (gdb-test): Pass -- as first argument
+	to send_log.
+
 2012-11-23  Jakub Jelinek  <jakub@redhat.com>
 
 	* lib/asan-dg.exp (asan_symbolize): Remove all "BFD: " prefixed lines

gcc/testsuite/lib/gcc-gdb-test.exp

@@ -74,7 +74,9 @@ proc gdb-test { args } {
 	    if { $first == $second } {
 		pass "$testname"
 	    } else {
-		send_log "$first != $second\n"
+		# We need the -- to disambiguate $first from an option,
+		# as it may be negative.
+		send_log -- "$first != $second\n"
 		fail "$testname"
 	    }
 	    remote_close target