Fatal Crashes when open & close PDF multiple times

oemilk
Topic Author
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Junior Member

IP: 192.168.0.71 11 years 8 months ago #8189 by oemilk

Fatal Crashes when open & close PDF multiple times was created by oemilk

Hi.

This is not "Document close" crash..

1. heap corruption detected by dlfree (Fatal signal 6 (SIGABRT))
2. signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr

3. signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00002308
- /data/app-lib/com.access_company.android.docdrive-2/librdpdf.so (Java_com_radaee_pdf_Page_renderToBmp+278)

radaee
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IP: 192.168.0.71 11 years 8 months ago #8191 by radaee

Replied by radaee on topic Fatal Crashes when open & close PDF multiple times

yes, i think it is render page after Document closed:
correct:

Code:

Page page = Document.GetPage(pageno);
page.RenderToBmp();
page.Close();
Document.Close();

incorrect:

Code:

Page page = Document.GetPage(pageno);
Document.Close();
page.RenderToBmp();
page.Close();

you can write log in Document.Close() and Page.RenderXXX() and Page.Close(), and PageObjsStart().
and so on.
got sequence of logs.

oemilk
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Junior Member

IP: 192.168.0.71 11 years 8 months ago #8200 by oemilk

Replied by oemilk on topic Fatal Crashes when open & close PDF multiple times

I understand third crash.

(3. signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00002308
- /data/app-lib/com.access_company.android.docdrive-2/librdpdf.so (Java_com_radaee_pdf_Page_renderToBmp+278))

So I fixed it like below codes.

Code:

if(doc.IsOpen){
  Page page = doc.GetPage(pageno);
  page.ObjsStart();
  .....
}

But I do not understand others.

I think "heap corruption detected by dlfree" is not "Document close" problem...

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