#0  0x00007f5867d996c0 in pvl_head () from /usr/lib/libical.so.0
No symbol table info available.
#1  0x00007f5867d8705c in icalcomponent_free () from /usr/lib/libical.so.0
No symbol table info available.
#2  0x00007f5867d87053 in icalcomponent_free () from /usr/lib/libical.so.0
No symbol table info available.
#3  0x00007f583c86a8e3 in write_calendar (error=0x7f58400e1b68, stream=0x2a1e360, source_list=<optimized out>, uid=<optimized out>) at publish-format-ical.c:131
        source = <optimized out>
        client = 0x2629360
        objects = 0x58faca0
        top_level = 0x7f58392c2950
        res = <optimized out>
#4  publish_calendar_as_ical (stream=0x2a1e360, uri=<optimized out>, error=0x7f58400e1b68) at publish-format-ical.c:151
        uid = <optimized out>
        l = 0x2b5d670
        source_list = 0x59086a0
#5  0x00007f583c868c1b in publish_online (uri=0x3d87540, file=<optimized out>, perror=0x7f58400e1bb8, can_report_success=1) at publish-calendar.c:225
        stream = 0x2a1e360
        error = 0x0
#6  0x00007f583c869068 in publish (can_report_success=1, uri=0x3d87540) at publish-calendar.c:461
        error = 0x0
        file = 0x5901af0
#7  publish (uri=0x3d87540, can_report_success=1) at publish-calendar.c:444
No locals.
#8  0x00007f583c8691bd in publish_urls (data=<optimized out>) at publish-calendar.c:930
        uri = <optimized out>
        l = 0x3ce5910
#9  0x00007f585fdd77e6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#10 0x00007f586565cb50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#11 0x00007f585f8b64ad in clone () from /lib/x86_64-linux-gnu/libc.so.6
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#12 0x0000000000000000 in ?? ()
No symbol table info available.

