additional testcases including testcase_218 exposing parser deadlock

[debris]

[debris]

test passed on buildbot... it's weird. on my machine (osx 10.11.1) test_218 hangs

lldb backtrace

lldb docopt-582cf2d96bafce10 -- 218
(lldb) target create "docopt-582cf2d96bafce10"
Current executable set to 'docopt-582cf2d96bafce10' (x86_64).
(lldb) settings set -- target.run-args  "218"
(lldb) r
Process 9813 launched: '/Users/marek/projects/ethcore/docopt.rs/target/debug/docopt-582cf2d96bafce10' (x86_64)

running 1 test
Process 9813 stopped
* thread #1: tid = 0x5075b, 0x00007fff95911f5e libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff95911f5e libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait:
->  0x7fff95911f5e <+10>: jae    0x7fff95911f68            ; <+20>
    0x7fff95911f60 <+12>: movq   %rax, %rdi
    0x7fff95911f63 <+15>: jmp    0x7fff9590d3ef            ; cerror_nocancel
    0x7fff95911f68 <+20>: retq
(lldb) bt all
* thread #1: tid = 0x5075b, 0x00007fff95911f5e libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
  * frame #0: 0x00007fff95911f5e libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff9129373d libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x00000001001b9bf9 docopt-582cf2d96bafce10`std::thread::park::hf65e42cf7cf0690b + 297
    frame #3: 0x00000001001c03a2 docopt-582cf2d96bafce10`std::sync::mpsc::blocking::WaitToken::wait::h7355d1e8fe9bf863 + 50
    frame #4: 0x00000001000b94ee docopt-582cf2d96bafce10`_$LT$std..sync..mpsc..Receiver$LT$T$GT$$GT$::recv::hb6d60caa436215b3 + 3534
    frame #5: 0x00000001000a7d30 docopt-582cf2d96bafce10`test::run_tests_console::h90e0b91429aafff4 + 6752
    frame #6: 0x00000001000a5272 docopt-582cf2d96bafce10`test::test_main::hbaa0fd33a7e40623 + 258
    frame #7: 0x00000001000ab32f docopt-582cf2d96bafce10`test::test_main_static::he404c57ea2db8df6 + 2687
    frame #8: 0x00000001000a4167 docopt-582cf2d96bafce10`docopt::__test::main::h2732d7a03be2cea5 + 23 at lib.rs:1
    frame #9: 0x00000001001c5313 docopt-582cf2d96bafce10`std::sys_common::unwind::try::try_fn::hf5d123c03b60f222 + 35
    frame #10: 0x00000001001c2aac docopt-582cf2d96bafce10`__rust_try + 12
    frame #11: 0x00000001001c5155 docopt-582cf2d96bafce10`std::rt::lang_start::hb87e98f24ba5d300 + 533
    frame #12: 0x00000001000a419a docopt-582cf2d96bafce10`main + 42
    frame #13: 0x00007fff8accb5ad libdyld.dylib`start + 1
    frame #14: 0x00007fff8accb5ad libdyld.dylib`start + 1

  thread #2: tid = 0x50772, 0x00007fff959122b2 libsystem_kernel.dylib`__semwait_signal + 10
    frame #0: 0x00007fff959122b2 libsystem_kernel.dylib`__semwait_signal + 10
    frame #1: 0x00007fff9129479b libsystem_pthread.dylib`pthread_join + 444
    frame #2: 0x00000001001c4e8e docopt-582cf2d96bafce10`std::sys::thread::Thread::join::h8a8ccda2bad84519 + 14
    frame #3: 0x00000001000c1e80 docopt-582cf2d96bafce10`std::sys_common::unwind::try::try_fn::h7a2f318c9c72919c + 2816
    frame #4: 0x00000001001c2aac docopt-582cf2d96bafce10`__rust_try + 12
    frame #5: 0x00000001001c2a34 docopt-582cf2d96bafce10`std::sys_common::unwind::inner_try::h03f2e7dcfdd826c0 + 116
    frame #6: 0x00000001000c2dd3 docopt-582cf2d96bafce10`_$LT$F$u20$as$u20$std..boxed..FnBox$LT$A$GT$$GT$::call_box::h412b5ebd26612b98 + 467
    frame #7: 0x00000001001c4d39 docopt-582cf2d96bafce10`std::sys::thread::Thread::new::thread_start::h42a605e44c815beb + 57
    frame #8: 0x00007fff912929b1 libsystem_pthread.dylib`_pthread_body + 131
    frame #9: 0x00007fff9129292e libsystem_pthread.dylib`_pthread_start + 168
    frame #10: 0x00007fff91290385 libsystem_pthread.dylib`thread_start + 13

  thread #3: tid = 0x50773, 0x0000000100010638 docopt-582cf2d96bafce10`core::num::_$LT$impl$u20$u64$GT$::wrapping_add::hb0ecf682950d4d6f + 8 at mod.rs:1673
    frame #0: 0x0000000100010638 docopt-582cf2d96bafce10`core::num::_$LT$impl$u20$u64$GT$::wrapping_add::hb0ecf682950d4d6f + 8 at mod.rs:1673
    frame #1: 0x0000000100010bf6 docopt-582cf2d96bafce10`_$LT$hash..sip..SipHasher$u20$as$u20$hash..Hasher$GT$::finish::hab5772a924132019 + 1254 at sip.rs:100
    frame #2: 0x000000010002fa16 docopt-582cf2d96bafce10`std::collections::hash::table::make_hash::h6111e36ddc1be37b + 54 at table.rs:157
    frame #3: 0x0000000100058f6d docopt-582cf2d96bafce10`_$LT$std..collections..HashMap$LT$K$C$$u20$V$C$$u20$S$GT$$GT$::make_hash::he6f6412f34f321e1 + 29 at map.rs:482
    frame #4: 0x0000000100058f0a docopt-582cf2d96bafce10`_$LT$std..collections..HashMap$LT$K$C$$u20$V$C$$u20$S$GT$$GT$::search_mut::he6c5d5b54c92bd7c + 42 at map.rs:500
    frame #5: 0x0000000100056cb8 docopt-582cf2d96bafce10`_$LT$std..collections..HashMap$LT$K$C$$u20$V$C$$u20$S$GT$$GT$::entry::h9cb264d5b454ecd6 + 104 at map.rs:960
    frame #6: 0x0000000100067d24 docopt-582cf2d96bafce10`docopt::parse::MState::use_flag::h4ebec3509d040445 + 484 at parse.rs:1091
    frame #7: 0x000000010006cae3 docopt-582cf2d96bafce10`docopt::parse::Matcher::states::h88515eb2578dbe78 + 5523 at parse.rs:1312
    frame #8: 0x000000010006b789 docopt-582cf2d96bafce10`docopt::parse::Matcher::states::h88515eb2578dbe78 + 569 at parse.rs:1289
    frame #9: 0x000000010007b670 docopt-582cf2d96bafce10`docopt::parse::Matcher::all_option_states::hc24df8240c062f2c + 304 at parse.rs:1344
    frame #10: 0x000000010006c5f4 docopt-582cf2d96bafce10`docopt::parse::Matcher::states::h88515eb2578dbe78 + 4260 at parse.rs:1285
    frame #11: 0x000000010006c975 docopt-582cf2d96bafce10`docopt::parse::Matcher::states::h88515eb2578dbe78 + 5157 at parse.rs:1294
    frame #12: 0x000000010006bf50 docopt-582cf2d96bafce10`docopt::parse::Matcher::states::h88515eb2578dbe78 + 2560 at parse.rs:1256
    frame #13: 0x000000010002d74d docopt-582cf2d96bafce10`docopt::parse::Matcher::matches::hfa82a995bfee14ba + 205 at parse.rs:1145
    frame #14: 0x00000001000096a2 docopt-582cf2d96bafce10`docopt::parse::Parser::matches::h3b2a662309f5a263 + 242 at parse.rs:87
    frame #15: 0x0000000100007e56 docopt-582cf2d96bafce10`docopt::dopt::Docopt::parse::_$u7b$$u7b$closure$u7d$$u7d$::hc90840e8f6945e7f + 134 at dopt.rs:220
    frame #16: 0x0000000100007c61 docopt-582cf2d96bafce10`_$LT$std..result..Result$LT$T$C$$u20$E$GT$$GT$::and_then::h6d08b9132aab748e + 257 at result.rs:561
    frame #17: 0x00000001000075ab docopt-582cf2d96bafce10`docopt::dopt::Docopt::parse::h8603d0f02bf14970 + 315 at dopt.rs:217
    frame #18: 0x0000000100080260 docopt-582cf2d96bafce10`docopt::test::get_args::h58058adbaf68154c + 1184 at mod.rs:10
    frame #19: 0x000000010009ea18 docopt-582cf2d96bafce10`docopt::test::testcases::test_218_testcases::hb0c5c73dd35e9a68 + 56 at mod.rs:46
    frame #20: 0x00000001000c104c docopt-582cf2d96bafce10`_$LT$F$u20$as$u20$std..boxed..FnBox$LT$A$GT$$GT$::call_box::h7255de43fd0b46d8 + 28
    frame #21: 0x00000001000c351e docopt-582cf2d96bafce10`std::sys_common::unwind::try::try_fn::hc2822a57b50437fa + 478
    frame #22: 0x00000001001c2aac docopt-582cf2d96bafce10`__rust_try + 12
    frame #23: 0x00000001001c2a34 docopt-582cf2d96bafce10`std::sys_common::unwind::inner_try::h03f2e7dcfdd826c0 + 116
    frame #24: 0x00000001000c3905 docopt-582cf2d96bafce10`_$LT$F$u20$as$u20$std..boxed..FnBox$LT$A$GT$$GT$::call_box::h2b061a3d9e6a169e + 421
    frame #25: 0x00000001001c4d39 docopt-582cf2d96bafce10`std::sys::thread::Thread::new::thread_start::h42a605e44c815beb + 57
    frame #26: 0x00007fff912929b1 libsystem_pthread.dylib`_pthread_body + 131
    frame #27: 0x00007fff9129292e libsystem_pthread.dylib`_pthread_start + 168
    frame #28: 0x00007fff91290385 libsystem_pthread.dylib`thread_start + 13

[BurntSushi]

Weird. I don't know where the hang is occurring? Can you reproduce the bug outside the test harness in a normal program?

Also, I unfortunately can't merge this PR because you edited a generated file (see the top of the file). If you add the tests to testcases.docopt instead, I'd be happy to merge.

[debris]

Weird. I don't know where the hang is occurring? Can you reproduce the bug outside the test harness in a normal program?

Yes. That's how I found it.

Also, I unfortunately can't merge this PR because you edited a generated file (see the top of the file). If you add the tests to testcases.docopt instead, I'd be happy to merge.

Sure. I will prepare everything on monday... Will also try to find a reason hang.

[debris]

testcases.docopt updated.

I also tried to reproduce the issue on linux machine and I noticed strange thing. Test 218 passes, but it takes ~30 seconds to execute. It's the same on my osx machine. I haven't noticed that before cause I was always killing the process before that time.

short ascii video