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Fix 'gdb.base/quit.exp hangs forever' if the test fails

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The [wait -i $gdb_spawn_id] in the test is dangerous in the sense that
it won't be subject to timeout logic.  So if GDB fails quiting, this
testcase hangs forever, hanging the test run with it.  See:
  https://sourceware.org/ml/gdb-patches/2016-10/msg00728.html

Instead of 'wait'ing directly, use gdb_test_multiple and expect 'eof'.

Tested that the testcase no longer hangs by hacking the test to send
"info threads" instead of "quit".

Tested with
  --target_board={unix, native-gdbserver,native-extended-gdbserver}
and tested with
  --host_board=local-remote-host
as well.

gdb/testsuite/ChangeLog:
2017-10-20  Pedro Alves  <palves@redhat.com>

	* gdb.base/quit.exp: Use gdb_test_multiple and expect 'eof' before
	'wait -i'.  Use gdb_assert and remote_close.
This commit is contained in:
Pedro Alves 2017-10-20 15:33:57 +01:00
parent fcc8fb2f3d
commit 15763a09d4
2 changed files with 16 additions and 9 deletions
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5
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2017-10-20 Pedro Alves <palves@redhat.com>
* gdb.base/quit.exp: Use gdb_test_multiple and expect 'eof' before
'wait -i'. Use gdb_assert and remote_close.
2017-10-19 Andrew Burgess <andrew.burgess@embecosm.com>
* gdb.linespec/ls-errs.exp (do_test): Update comment, use line

20
gdb/testsuite/gdb.base/quit.exp
View File

@ -23,13 +23,15 @@ gdb_test "quit()" "A syntax error in expression, near .*" \
"quit with syntax error"
# Test that an expression can be used to set the error code.
send_gdb "quit 22+1\n"
set result [wait -i $gdb_spawn_id]
verbose $result
if {[lindex $result 2] == 0 && [lindex $result 3] == 23} {
pass "quit with expression"
} else {
fail "quit with expression"
set test "quit with expression"
gdb_test_multiple "quit 22+1" $test {
eof {
set result [wait -i $gdb_spawn_id]
verbose $result
gdb_assert {[lindex $result 2] == 0 && [lindex $result 3] == 23} $test
remote_close host
clear_gdb_spawn_id
}
}
close $gdb_spawn_id
clear_gdb_spawn_id