(gdb) bt full
#0  0x00000100000f4e00 in deleteBlockData (nl=0x100004af228, data=0x0) at parsers/ruby.c:746
        bdata = 0x100004af22c
        e = 0x73
        sub_e = 0x100004af25b
#1  0x000001000020bc74 in nestingLevelsPopFull (nls=0x100004ae4e0, ctxData=0x0) at main/nestlevel.c:98
        nl = 0x100004af228
#2  0x00000100000f6884 in findRubyTags () at parsers/ruby.c:1229
        subparser = 0x0
        cp = 0x100004af25b ""
        expect_separator = false
        line = 0x100004af250 "        end"
        inMultiLineComment = false
        constant = 0x100004ae4c0
        found_rdoc = false
#3  0x0000010000041f3c in createTagsForFile (language=108, passCount=1) at main/parse.c:4052
        lang = 0x10000468e20
        rescan = RESCAN_NONE
#4  0x00000100000427ac in createTagsWithFallback1 (language=108, exclusive_subparser=0x7feffffe734) at main/parse.c:4179
        tagFileResized = false
        numTags = 0
        tagfpos = {type = MIO_TYPE_FILE, impl = {file = {__pos = 0, __state = {__count = 256, __value = {__wch = 2322720, __wchb = "\000#q "}}}, mem = 0}}
        lastPromise = -1
        passCount = 1
        whyRescan = (unknown: 0x237158)
        parser = 0x100004261d0
        corkFlags = 1
        useCork = true
#5  0x0000010000042a80 in createTagsWithFallback (fileName=0x100004a9dc0 "./Units/parser-ruby.r/simple.rb.d/input.rb", language=108, mio=0x0, mtime=0, 
    failureInOpenning=0x7feffffe816) at main/parse.c:4271
        exclusive_subparser = -2
        tagFileResized = false
#6  0x000001000004347c in parseMio (fileName=0x100004a9dc0 "./Units/parser-ruby.r/simple.rb.d/input.rb", language=108, mio=0x0, mtime=0, 
    useSourceFileTagPath=true, clientData=0x0) at main/parse.c:4433
        tagFileResized = false
        failureInOpenning = false
#7  0x0000010000043710 in parseFileWithMio (fileName=0x100004a9dc0 "./Units/parser-ruby.r/simple.rb.d/input.rb", mio=0x0, clientData=0x0)
    at main/parse.c:4480
        tagFileResized = false
        language = 108
        req = {type = GLR_OPEN, fileName = 0x100004a9dc0 "./Units/parser-ruby.r/simple.rb.d/input.rb", mio = 0x0, mtime = 0}
#8  0x00000100000433e0 in parseFile (fileName=0x100004a9dc0 "./Units/parser-ruby.r/simple.rb.d/input.rb") at main/parse.c:4416
        bRet = 226
#9  0x0000010000028f98 in createTagsForEntry (entryName=0x100004a9dc0 "./Units/parser-ruby.r/simple.rb.d/input.rb") at main/main.c:221
        resize = false
        status = 0x10000420cd8 <file>
#10 0x0000010000028ff0 in createTagsForArgs (args=0x100004238d0) at main/main.c:266
        arg = 0x100004a9dc0 "./Units/parser-ruby.r/simple.rb.d/input.rb"
        resize = false
#11 0x0000010000029610 in batchMakeTags (args=0x100004238d0, user=0x0) at main/main.c:360
        timeStamps = {0, 1099513937480, 8791798050008}
        resize = false
        files = true
#12 0x00000100000293dc in runMainLoop (args=0x100004238d0) at main/main.c:332
No locals.
#13 0x0000010000029d10 in ctags_cli_main (argc=9, argv=0x7fefffff2e0) at main/main.c:586
        args = 0x100004238d0
#14 0x0000010000028a28 in main (argc=9, argv=0x7fefffff2d8) at main/cmd.c:21
No locals.