Created attachment 26898 [details] Code to try to convert a PDF file into a PNM file. I've attached my code snippet to try to convert a PDF file into a PNM file. And here's the GDB backtrace when it crashes: =========================================================================== START OF BACKTRACE =========================================================================== Program received signal SIGSEGV, Segmentation fault. 0xb78e1e24 in pthread_mutex_lock () from /lib/tls/libpthread.so.0 (gdb) bt #0 0xb78e1e24 in pthread_mutex_lock () from /lib/tls/libpthread.so.0 #1 0xb7bebba6 in pthread_mutex_lock () from /lib/tls/libc.so.6 #2 0xb7e1908b in GlobalParams::getScreenSize (this=0x0) at GlobalParams.cc:1404 #3 0xb7db7883 in SplashOutputDev::setupScreenParams (this=0x80527f0, hDPI=72, vDPI=72) at SplashOutputDev.cc:631 #4 0xb7dbc37b in SplashOutputDev (this=0x80527f0, colorModeA=splashModeRGB8, bitmapRowPadA=0, reverseVideoA=0, paperColorA=0xbff924e8 "���", bitmapTopDownA=1, allowAntialiasA=0) at SplashOutputDev.cc:607 #5 0x080490c2 in main (argc=1886216563, argv=0x702e656c) at test.cpp:64 (gdb) =========================================================================== END OF BACKTRACE ===========================================================================
You need two things: a) Learn to read backtraces ;-) It's not crashing at getScreenSize, it's crashing because it's calling getScreenSize over a null GlobalParams b) Create your global GlobalParams object like all poppler core using programs do.
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