panic: runtime error: index out of range

[davidreynolds]

drr@minty ~/git/cayley $ ./cayley repl --dbpath=testdata.nt
cayley> graph.Vertex("dani").Is()

=> [internal Iterator]
-----------
1 Results
Elapsed time: 1.824459 ms

cayley> graph.Vertex("dani").Is().All()

panic: runtime error: index out of range [recovered]
    panic: runtime error: index out of range [recovered]
    panic: runtime error: index out of range

goroutine 9 [running]:
runtime.panic(0x9631c0, 0x110f677)
    /usr/lib/go/src/pkg/runtime/panic.c:266 +0xb6
gremlin.func·009()
    /home/drr/git/cayley/src/gremlin/gremlin-session.go:120 +0xe5
runtime.panic(0x9631c0, 0x110f677)
    /usr/lib/go/src/pkg/runtime/panic.c:248 +0x106
github.com/robertkrimen/otto.func·024()
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/error.go:240 +0x43d
runtime.panic(0x9631c0, 0x110f677)
    /usr/lib/go/src/pkg/runtime/panic.c:248 +0x106
graph.(*FixedIterator).DebugString(0xc2100c3690, 0x4, 0x0, 0x0)
    /home/drr/git/cayley/src/graph/fixed-iterator.go:92 +0x1e6
graph.(*AndIterator).DebugString(0xc21005e480, 0x0, 0xc21005e480, 0x851301)
    /home/drr/git/cayley/src/graph/and-iterator.go:117 +0x50c
gremlin.runIteratorOnSession(0x7faed00052d8, 0xc21005e480, 0xc2100d0000)
    /home/drr/git/cayley/src/gremlin/gremlin-finals.go:244 +0xd3
gremlin.func·004(0xc21006e6e0, 0x0, 0x0, 0x5, 0x9ee9e0, ...)
    /home/drr/git/cayley/src/gremlin/gremlin-finals.go:42 +0xc3
github.com/robertkrimen/otto.(*_object).call(0xc210195ea0, 0x5, 0x9ee9e0, 0xc210195180, 0x11211b0, ...)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/type_function.go:140 +0x415
github.com/robertkrimen/otto.(*_runtime).cmpl_evaluate_nodeCallExpression(0xc21006e6e0, 0xc210184c90, 0x0, 0x0, 0x0, ...)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/cmpl_evaluate_expression.go:240 +0x78e
github.com/robertkrimen/otto.(*_runtime).cmpl_evaluate_nodeExpression(0xc21006e6e0, 0x7faed0000fe8, 0xc210184c90, 0xc21014ebb0, 0x9ee901, ...)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/cmpl_evaluate_expression.go:44 +0x7f8
github.com/robertkrimen/otto.(*_runtime).cmpl_evaluate_nodeStatement(0xc21006e6e0, 0x7faed0000d90, 0xc21014ebb0, 0x0, 0x0, ...)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/cmpl_evaluate_statement.go:49 +0xd76
github.com/robertkrimen/otto.(*_runtime).cmpl_evaluate_nodeStatementList(0xc21006e6e0, 0xc21014eba0, 0x1, 0x1, 0x7faecfe88d40, ...)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/cmpl_evaluate_statement.go:108 +0x95
github.com/robertkrimen/otto.(*_runtime).cmpl_evaluate_nodeProgram(0xc21006e6e0, 0xc2100c3000, 0x990400, 0x0, 0x0, ...)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/cmpl_evaluate.go:17 +0x113
github.com/robertkrimen/otto.func·040()
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/runtime.go:293 +0x43
github.com/robertkrimen/otto.catchPanic(0x7faecfe88df8, 0x0, 0x0)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/error.go:243 +0x6a
github.com/robertkrimen/otto.(*_runtime).cmpl_run(0xc21006e6e0, 0x990420, 0xc210171780, 0xc210187360, 0x7faecfe84fa0, ...)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/runtime.go:294 +0x120
github.com/robertkrimen/otto.Otto.Run(0xc210180c60, 0xc21006e6e0, 0x990420, 0xc210171780, 0xc210186c40, ...)
    /home/drr/git/cayley/src/github.com/robertkrimen/otto/otto.go:292 +0x49
gremlin.(*GremlinSession).runUnsafe(0xc2100d0000, 0x990420, 0xc210171780, 0x0, 0x0, ...)
    /home/drr/git/cayley/src/gremlin/gremlin-session.go:139 +0x14a
gremlin.(*GremlinSession).ExecInput(0xc2100d0000, 0xc210186b40, 0x1f, 0xc210093420, 0x64)
    /home/drr/git/cayley/src/gremlin/gremlin-session.go:151 +0x22b
created by cayley_cmd.RunQuery
    /home/drr/git/cayley/src/cayley_cmd/cayley-repl.go:52 +0x17a

goroutine 1 [runnable]:
cayley_cmd.RunQuery(0xc210186b40, 0x1f, 0x7faed0000bf8, 0xc2100d0000)
    /home/drr/git/cayley/src/cayley_cmd/cayley-repl.go:53 +0x19d
cayley_cmd.CayleyRepl(0x7faed0000a20, 0xc210048c00, 0xa1d060, 0x7, 0xc210048960)
    /home/drr/git/cayley/src/cayley_cmd/cayley-repl.go:133 +0xa6c
main.main()
    /home/drr/git/cayley/src/cayley/main.go:77 +0x7c1

goroutine 3 [chan receive]:
github.com/barakmich/glog.(*loggingT).flushDaemon(0x1118680)
    /home/drr/git/cayley/src/github.com/barakmich/glog/glog.go:923 +0x50
created by github.com/barakmich/glog.init·1
    /home/drr/git/cayley/src/github.com/barakmich/glog/glog.go:408 +0x33e

goroutine 4 [syscall]:
runtime.goexit()
    /usr/lib/go/src/pkg/runtime/proc.c:1394

goroutine 8 [sleep]:
time.Sleep(0x6fc23ac00)
    /usr/lib/go/src/pkg/runtime/time.goc:31 +0x31
gremlin.func·011()
    /home/drr/git/cayley/src/gremlin/gremlin-session.go:128 +0x3c
created by gremlin.(*GremlinSession).runUnsafe
    /home/drr/git/cayley/src/gremlin/gremlin-session.go:136 +0x10f

goroutine 10 [sleep]:
time.Sleep(0x6fc23ac00)
    /usr/lib/go/src/pkg/runtime/time.goc:31 +0x31
gremlin.func·011()
    /home/drr/git/cayley/src/gremlin/gremlin-session.go:128 +0x3c
created by gremlin.(*GremlinSession).runUnsafe
    /home/drr/git/cayley/src/gremlin/gremlin-session.go:136 +0x10f

[barakmich]

Aha. Thank you -- I know what's wrong (the "Is" requires parameters) but I should make it not die.