Testing URLAUTH in dovecot-2.2.1 plus Timo's recent CATENATE and URLAUTH fixes eventually trips some assertions. No simple sequence of commands always hits these; they appear to be timing-dependent.

The first one is:

May 02 17:47:17 imap(pid 50490 user submit): Panic: file imap-client.c: line 643 (client_command_free): assertion failed: (client->output_cmd_lock == NULL)

The line number doesn't match dovecot-2.2.1 due to Apple's unrelated modifications.

0 libsystem_kernel.dylib 0x00007fff8a9f7d4a __pthread_kill + 10 1 libsystem_pthread.dylib 0x00007fff8f728705 pthread_kill + 92 2 libsystem_c.dylib 0x00007fff8f48b17b abort + 125 3 libdovecot.0.dylib 0x000000010db8d2bb default_fatal_finish + 68 4 libdovecot.0.dylib 0x000000010db8df66 i_internal_error_handler + 0 5 libdovecot.0.dylib 0x000000010db8d53d i_panic + 158 6 imap 0x000000010da468fe client_command_free + 446 7 imap 0x000000010da47a33 client_output_cmd + 37 8 imap 0x000000010da46497 client_output + 143 9 libdovecot.0.dylib 0x000000010dba5610 stream_send_io + 53 10 libdovecot.0.dylib 0x000000010db9bc74 io_loop_call_io + 46 11 libdovecot.0.dylib 0x000000010db9cc85 io_loop_handler_run + 214 12 libdovecot.0.dylib 0x000000010db9be1f io_loop_run + 77 13 libdovecot.0.dylib 0x000000010db5b0c6 master_service_run + 24 14 imap 0x000000010da4fa66 main + 1010 15 libdyld.dylib 0x00007fff8f7887bd start + 1

The second one is:

May 02 19:23:29 imap(pid 60229 user mja): Panic: file index-mail.c: line 1274 (index_mail_close_streams_full): assertion failed: (!mail->data.destroying_stream)

0 libsystem_kernel.dylib 0x00007fff8a9f7d4a __pthread_kill + 10 1 libsystem_pthread.dylib 0x00007fff8f728705 pthread_kill + 92 2 libsystem_c.dylib 0x00007fff8f48b17b abort + 125 3 libdovecot.0.dylib 0x00000001054c42bb default_fatal_finish + 68 4 libdovecot.0.dylib 0x00000001054c4f66 i_internal_error_handler + 0 5 libdovecot.0.dylib 0x00000001054c453d i_panic + 158 6 libdovecot-storage.0.dylib 0x00000001053aaebb index_mail_close_streams_full + 199 7 libdovecot-storage.0.dylib 0x00000001053aaf29 index_mail_close + 44 8 libdovecot-storage.0.dylib 0x00000001053ab6bd index_mail_free + 48 9 libdovecot-storage.0.dylib 0x000000010538a19a mail_free + 15 10 libdovecot-storage.0.dylib 0x00000001053dd3b3 imap_msgpart_url_free + 65 11 imap 0x000000010532d563 imap_urlauth_fetch_abort_local + 30 12 imap 0x000000010532cb96 imap_urlauth_fetch_abort + 38 13 imap 0x000000010532cb54 imap_urlauth_fetch_deinit + 24 14 imap 0x00000001053218bd cmd_urlfetch_finish + 45 15 imap 0x0000000105321aa3 cmd_urlfetch_continue + 167 16 imap 0x0000000105323ef8 command_exec + 55 17 imap 0x0000000105323a20 client_output_cmd + 18 18 imap 0x0000000105322497 client_output + 143 19 libdovecot.0.dylib 0x00000001054dc610 stream_send_io + 53 20 libdovecot.0.dylib 0x00000001054d2c74 io_loop_call_io + 46 21 libdovecot.0.dylib 0x00000001054d3c85 io_loop_handler_run + 214 22 libdovecot.0.dylib 0x00000001054d2e1f io_loop_run + 77 23 libdovecot.0.dylib 0x00000001054920c6 master_service_run + 24 24 imap 0x000000010532ba66 main + 1010 25 libdyld.dylib 0x00007fff8f7887bd start + 1