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segfault during debug #3875

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rmast opened this issue Jul 18, 2022 · 2 comments
Closed

segfault during debug #3875

rmast opened this issue Jul 18, 2022 · 2 comments
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bug unexpected termination

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@rmast
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rmast commented Jul 18, 2022

Environment

  • Tesseract Version: 5.2.0
  • Commit Number: commit 8c573e4 (HEAD, stweil/main)
  • Platform: Linux Ubuntu20b 5.15.0-1014-azure # 17~20.04.1-Ubuntu SMP Thu Jun 23 20:01:51 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

./configure --enable-graphics --enable-debug -disable-legacy

Current Behavior:

tesseract --dpi 300 -l Latin -c textord_restore_underlines=1 -c textord_show_final_rows=1 -c textord_debug_tabfind=1 -c textord_debug_bugs=1 175789293-f39ddfdb-6f3e-4598-8d16-80a1f4a88b36.jpg outputwithoutinvert3

picture

[ 3098.848254] tesseract[7316]: segfault at 18 ip 00007fda7f267264 sp 00007ffdacd759b0 error 4 in libtesseract.so.5.0.2[7fda7f0ef000+1c5000]
image

Expected Behavior:

No dump

Suggested Fix:
@stweil stweil added the bug label Jul 19, 2022
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stweil commented Jul 19, 2022 •
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The crash occurs because to_win is used but was not created (resulting in this == nullptr).

stweil added a commit that referenced this issue Jul 19, 2022
@stweil
Create to_win if needed in Textord::make_spline_rows (fixes issue #3875)
99d6717 
There still remain memory leaks for the test scenario, but those are less
urgent as they are related to code which is only used for debugging.

Signed-off-by: Stefan Weil <[email protected]>
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stweil commented Jul 19, 2022

I fixed this issue in commit 99d6717.

@amitdo amitdo closed this as completed Jul 20, 2022
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@rmast @stweil @amitdo