PDF XChange Forum

OCR_GetText crashes on a particular PDF (321 pages) after a long time.

Exception Information:

Exception thrown at 0x00007FF940FA94FC (OcrTools.x64.dll) in TEST_OCR.exe: 0xC0000005: Access violation reading location 0x0000000000000000. occurred

The process does not consume much memory.

This issue can be reproduced with SDK sample TEXT_OCR.

PDF is attached.

Hi uhonermann,

Thanks for the post and sample - Can you advise on the specific version and build of the DLL you're using?

Cheers,

The following message is displayed in the command window prior to the crash:


"start >= 0 && start + num <= length_:Error:Assert failed:in file d:\workprg\pdf5\trunk\ocrlib\tesseract\tesseract-ocr\ccstruct\ratngs.cpp, line 321"

Version of OcrTools.x64.dll ist 7.0.0326.0001

Seems the file is too big, even as ZIP (19,9 MB).

You may download the file under:

http://cloud.windream.com/index.php/s/mO8FaXgknMK7pMa

Hi uhonermann,

Thanks for that - You're using an older release, so please download and test the latest OCR module, and advise on whether or not the crash still occurs:
https://www.pdf-xchange.com/versio ... ge-pro-sdk

Thanks,

Tried with Version 328, no crash any more.
Will try again with the real application now.

Glad to hear that Uwe!

Regards,
Stefan

Ok, no crash in the real application, problem is solved.