[Poppler-bugs] [Bug 78006] New: Certain documents take ages to open

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78006

          Priority: medium
            Bug ID: 78006
          Assignee: poppler-bugs at lists.freedesktop.org
           Summary: Certain documents take ages to open
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: octoploid at yandex.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: general
           Product: poppler

Certain pdf documents take very long before they are displayed
in okular. For example the attached file take over 6 seconds.
strace shows endless stream of:
...
pread(10, "49424 0 obj\n<<\n/Type/ObjStm\n/N 2"..., 256, 3529694) = 256
pread(10, "\nendstream\nendobj\n49425 0 obj\n<<"..., 256, 3532260) = 256
pread(10,
"x\332\225\231K\226\305(\16D\347\275\n\257\300\315G\10\330F\217\352sz\7uzV\373\257\33\274"...,
256, 3529784) = 256
pread(10,
";&01\272\236\246L\24\272\242N\34\322\221s%\4\204\236\241y\345\23\231\2773\373\327Sv\235"...,
256, 3530040) = 256
pread(10,
"Z\25\224A\24&\253B\317'qJe!\30i\31i\312\300f`\260\253\274\264\213\27\302\\\306:"...,
256, 3530296) = 256
pread(10,
"EZ\300\250\214\372\32\330Q}\365\27vD\246\257\364\223\351\1\240\34B\3435k/D\21\317\"\312"...,
256, 3530552) = 256
pread(10, "\244\313\251\322\245K\235 at 0$\307\2\"\236ur,
\"\233!\276\200(-\265AuAO\305}"..., 256, 3530808) = 256
pread(10, "
\373\2\0|B^\337\vj\362\217\264\363\211\351\177\273\270W\343\331f\344\244Q\227\254V?\363;"...,
256, 3531064) = 256
pread(10,
"\221\21k,[U\2055r\211~\341\n\371\\\317\360NlBB7Z\312\266\220V\266\205\21e\274"...,
256, 3531320) = 256
pread(10,
"\374\32<\244~\206v\234\324/U]\342\322\315\265\224\366\327\363\2467w\212\224\313B\254MWL\33"...,
256, 3531576) = 256
pread(10,
"\33\345\262M\233\256\312\205\207\223\235\356\224\313\311PyR\256\262\34\265\357\244\t\212\230\215\341\2354m"...,
256, 3531832) = 256
pread(10,
"\177\345K\255,\252\\R\211?\337B\334)\337v}t\247|\272\204\311O\312\27\333\31~<\220\31"...,
172, 3532088) = 172
pread(10, "49559 0 obj\n<<\n/Type/ObjStm\n/N 2"..., 256, 3878926) = 256
pread(10, "\nendstream\nendobj\n49560 0 obj\n<<"..., 256, 3881527) = 256
pread(10,
"x\332\225X[\262\335&\20\374\317*\264\2\2\363\2\266\221\257<*;p\345/\373O7\327\26\10"...,
256, 3879016) = 256
pread(10,
"H\274\32\361mx\f\261\26\6\30\201(\232\241\245CM\25b\317\343iP\344\351E;Ee\200L"...,
256, 3879272) = 256
pread(10, "\340)\337C\230\300\34\246\0248\1H\341\204\r\240P\201\307
#x1\263@\200@\241C\213\10\201"..., 256, 3879528) = 256
pread(10,
"A\204s\3\27\330f\254;\324:^\201\3764\300\0s\f\320#\30\360\"\207\307\4\3{\22\335\316"...,
256, 3879784) = 256
pread(10,
"\v\234\300\240\22\f\24\331\306\1\206~`\372\225\1\6\f\313l_\0100\210\365\v\1\30\234_S\205"...,
256, 3880040) = 256
pread(10,
"n\322o\31\17\317\251\237\356\243W\356\36\240\31\244~\276B\375Z\256.-\371\231s\220\300Y\256\0"...,
256, 3880296) = 256
pread(10,
"[\17\20\224\327t0\310\365\317\2Dmb\304a\210$;\223\33\34\374k\357\5\202\3624n\255\215"...,
256, 3880552) = 256
pread(10,
"\23\373\302\245+\265\271\335o\333+z\350\354\335\240X\376\377)\226U\264\247x\241X\227\n}\342X"...,
256, 3880808) = 256
pread(10,
"\237L\206\37:V\220\206/\\\345\211\10\225\225\343\336\250\216\240\21\224O\253\344\307\263\256\236\230\f."...,
256, 3881064) = 256
pread(10,
"\223\34\223\222^?\25e\24p}\3418\245\267\345\252\372\300q\2500i\270mM\306Q\240\23\304O"...,
207, 3881320) = 207
pread(10, "49498 0 obj\n<<\n/Type/ObjStm\n/N 2"..., 256, 3721754) = 256
pread(10, "\nendstream\nendobj\n49499 0 obj\n<<"..., 256, 3724334) = 256
...

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