[Poppler-bugs] [Bug 53925] New: poppler feeds invalid UTF-8 to cairo

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=53925

             Bug #: 53925
           Summary: poppler feeds invalid UTF-8 to cairo
    Classification: Unclassified
           Product: poppler
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: cairo backend
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: chpe at gnome.org


(Originally filed as https://bugzilla.gnome.org/show_bug.cgi?id=682451 )

Using poppler from git master and evince from git master (both updated today to
check the bug still occurs), when trying to print pages 3-4 of
http://www.unicode.org/Public/6.2.0/charts/blocks/U25A0.pdf I get two

Internal Error: cairo context error: input string not valid UTF-8

errors on console (and no output from the printer...). 

Breaking on _cairo_error in gdb, this is the first error:

Breakpoint 1, _cairo_error (status=CAIRO_STATUS_INVALID_STRING) at cairo.c:171
171    {
(gdb) where
#0  _cairo_error (status=CAIRO_STATUS_INVALID_STRING) at cairo.c:171
#1  0xb60c5119 in _cairo_validate_text_clusters (
    utf8=utf8 at entry=0x82c7480 "\355\240\275\355\264\273@\b\020",
utf8_len=utf8_len at entry=6, 
    glyphs=glyphs at entry=0x84b2500, num_glyphs=num_glyphs at entry=1, 
    clusters=clusters at entry=0x87d13e8, num_clusters=num_clusters at entry=1, 
    cluster_flags=cluster_flags at entry=(unknown: 0)) at cairo-misc.c:319
#2  0xb60ad0cb in cairo_show_text_glyphs (cr=0xb614b460, 
    utf8=0x82c7480 "\355\240\275\355\264\273@\b\020", utf8_len=6,
glyphs=0x84b2500, 
    num_glyphs=1, clusters=0x87d13e8, num_clusters=1, cluster_flags=(unknown:
0))
    at cairo.c:3593
#3  0xa022937f in CairoOutputDev::endString (this=0x83a9d48, state=0x8748718)
    at CairoOutputDev.cc:1222
#4  0x9f7b2f0d in Gfx::doShowText (this=this at entry=0x874a400, s=0x87d41d8) at
Gfx.cc:4036
#5  0x9f7b3ef9 in Gfx::opShowText (this=0x874a400, args=0xa00fe784, numArgs=1)
at Gfx.cc:3737
#6  0x9f7a4366 in Gfx::execOp (this=this at entry=0x874a400,
cmd=cmd at entry=0xa00fe764, 
    args=args at entry=0xa00fe784, numArgs=numArgs at entry=1) at Gfx.cc:857
#7  0x9f7aba5e in Gfx::go (this=this at entry=0x874a400,
topLevel=topLevel at entry=false)
    at Gfx.cc:716
#8  0x9f7abf05 in Gfx::display (this=this at entry=0x874a400,
obj=obj at entry=0xa00feb84, 
    topLevel=topLevel at entry=false) at Gfx.cc:682
#9  0x9f7ac30b in Gfx::drawForm (this=this at entry=0x874a400,
str=str at entry=0xa00feb84, 
    resDict=resDict at entry=0x83f72f0, matrix=matrix at entry=0xa00feb00, 
    bbox=bbox at entry=0xa00feae0, transpGroup=transpGroup at entry=false, 
    softMask=softMask at entry=false,
blendingColorSpace=blendingColorSpace at entry=0x0, 
    isolated=isolated at entry=false, knockout=knockout at entry=false,
alpha=alpha at entry=false, 
    transferFunc=transferFunc at entry=0x0, backdropColor=backdropColor at entry=0x0)
at Gfx.cc:4830
#10 0x9f7ad3e5 in Gfx::doForm (this=this at entry=0x874a400,
str=str at entry=0xa00feb84)
    at Gfx.cc:4753
#11 0x9f7b0123 in Gfx::opXObject (this=0x874a400, args=0xa00feca4, numArgs=1)
at Gfx.cc:4127
#12 0x9f7a4366 in Gfx::execOp (this=this at entry=0x874a400,
cmd=cmd at entry=0xa00fec84, 
    args=args at entry=0xa00feca4, numArgs=numArgs at entry=1) at Gfx.cc:857
#13 0x9f7aba5e in Gfx::go (this=this at entry=0x874a400,
topLevel=topLevel at entry=true)
    at Gfx.cc:716
#14 0x9f7abf05 in Gfx::display (this=0x874a400, obj=0xa00fef34, topLevel=true)
at Gfx.cc:682
#15 0x9f7f0b93 in Page::displaySlice (this=0x834fd80, out=0x83a9d48, hDPI=72,
vDPI=72, 
    rotate=0, useMediaBox=false, crop=true, sliceX=-1, sliceY=-1, sliceW=-1,
sliceH=-1, 
    printing=true, abortCheckCbk=0, abortCheckCbkData=0x0, 
    annotDisplayDecideCbk=0xa021da60 <poppler_print_annot_cb(Annot*, void*)>, 
    annotDisplayDecideCbkData=0x1) at Page.cc:520
#16 0xa021e3f5 in _poppler_page_render (page=0x833b700, cairo=0xb614b460,
printing=true, 
    print_flags=POPPLER_PRINT_MARKUP_ANNOTS) at poppler-page.cc:358
#17 0xa0247167 in pdf_document_print_print_page (document=0x8316b50,
page=0x833bc30, 
    cr=0xb614b460) at ev-poppler.cc:1934
#18 0xb7f719cb in ev_document_print_print_page (document_print=0x8316b50,
page=0x833bc30, 
    cr=0xb614b460) at ev-document-print.c:40
#19 0xb7f274ed in ev_job_print_run (job=0x8669c60) at ev-jobs.c:1866
#20 0xb7f232ba in ev_job_run (job=0x8669c60) at ev-jobs.c:215
#21 0xb7f27c2b in ev_job_thread (job=0x8669c60) at ev-job-scheduler.c:184
#22 0xb7f27d38 in ev_job_thread_proxy (data=0x0) at ev-job-scheduler.c:217
#23 0xb5c4e47f in g_thread_proxy (data=0x832d720) at gthread.c:801
#24 0xb5bc4adf in start_thread (arg=0xa00ffb40) at pthread_create.c:309
#25 0xb5ab754e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

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