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Issue 1106: [PATCH] Fixed potential usage of uninitialized bool varia… #9

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Issue 1106: [PATCH] Fixed potential usage of uninitialized bool varia… #9

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jimregan
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…ble in textord/tospace.cpp

https://code.google.com/p/tesseract-ocr/issues/detail?id=1106

Reported by ettl.martin78, Feb 11, 2014
Please review the attached patch. It fixes a potential usage of an uninitialized bool variable ('fuzzy_sp'). The fix simply initialized the variable by default to 'FALSE'. Before the fix, the value of 'fuzzy_sp' was not set, but used in the else-branch in line 1107:

      else {
        prev_blanks = blanks;
        prev_fuzzy_sp = fuzzy_sp;
        prev_fuzzy_non = fuzzy_non;
      }

Best regards and many thanks

Feb 11, 2014
#1 ettl.martin78

The updated patch fixes two more uninitialized variable usages in the same function.

Many thanks for reviewing.

(http://web.archive.org/web/20150509223835/https://code.google.com/p/tesseract-ocr/issues/detail?id=1106)

@orbitcowboy @jimregan
Issue 1106: [PATCH] Fixed potential usage of uninitialized bool varia…
57a1e73 
…ble in textord/tospace.cpp

https://code.google.com/p/tesseract-ocr/issues/detail?id=1106

Reported by ettl.martin78, Feb 11, 2014
Please review the attached patch. It fixes a potential usage of an uninitialized bool variable ('fuzzy_sp'). The fix simply initialized the variable by default to 'FALSE'. Before the fix, the value of 'fuzzy_sp' was not set, but used in the else-branch in line 1107:

          else {
            prev_blanks = blanks;
            prev_fuzzy_sp = fuzzy_sp;
            prev_fuzzy_non = fuzzy_non;
          }

Best regards and many thanks

Feb 11, 2014
tesseract-ocr#1 ettl.martin78
The updated patch fixes two more uninitialized variable usages in the same function.

Many thanks for reviewing.
@jbreiden jbreiden mentioned this pull request Jul 20, 2015
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@vzani vzani mentioned this pull request Aug 27, 2015
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tfmorris
tfmorris reviewed Feb 17, 2016
View reviewed changes
textord/tospace.cpp
@@ -932,6 +932,9 @@ ROW *Textord::make_prop_words(
box_it.set_to_list (row->blob_list ());
word_it.set_to_list (&words);
bol = TRUE;
fuzzy_non = FALSE;
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These initializations look redundant to me. They are already initialized at declaration time near line 894.

Having said that, I find the mix of declaration time and non-declaration initializations needlessly complex and think all of these later initializations should get rolled back up into the declarations.

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Ray addressed that issue after Martin's bug report: commit 9708041 fixes all three cases, so this pull request can be closed.

@amitdo amitdo mentioned this pull request Jul 7, 2016
Open
stweil referenced this pull request in stweil/tesseract Nov 28, 2016
@stweil
cube/char_samp: Fix some memory leaks
506b19f 
Coverity report:

CID 1164722 (#9 of 9): Resource leak (RESOURCE_LEAK)
20. leaked_storage: Variable label32 going out of scope leaks the storage
 it points to.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
stweil referenced this pull request in stweil/tesseract Nov 28, 2016
@stweil
cube/char_samp: Fix some memory leaks
f60ff4d 
Coverity report:

CID 1164722 (#9 of 9): Resource leak (RESOURCE_LEAK)
20. leaked_storage: Variable label32 going out of scope leaks the storage
 it points to.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
zdenop pushed a commit that referenced this pull request Dec 7, 2016
@stweil @zdenop
cube/char_samp: Fix some memory leaks
73c0649 
Coverity report:

CID 1164722 (#9 of 9): Resource leak (RESOURCE_LEAK)
20. leaked_storage: Variable label32 going out of scope leaks the storage
 it points to.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
@Shreeshrii Shreeshrii mentioned this pull request Dec 19, 2016
Closed
@cricket1 cricket1 mentioned this pull request Dec 28, 2016
Closed
@amitdo
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amitdo commented Apr 30, 2017

@orbitcowboy,
Can you reply to @tfmorris's comment?
#9 (comment)

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stweil commented May 2, 2017

This PR can be closed, see commit 9708041 which fixes the same issue here.

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amitdo commented May 2, 2017

Thanks Stefan. Somehow I missed that commit.

@zdenop zdenop closed this May 3, 2017
stweil referenced this pull request in stweil/tesseract May 20, 2018
@stweil
ColPartition: Add missing initialisation for median_left, median_right
fedae91 
The following code caused a crash when Tesseract was compiled with -ftrapv:

1259	  int width = right - left;

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007ffff665c231 in __GI_abort () at abort.c:79
#2  0x00007ffff69e34d8 in __subvsi3 () from /lib/x86_64-linux-gnu/libgcc_s.so.1
#3  0x000055555560c1c5 in tesseract::ColPartitionGrid::FindVPartitionPartners (this=0x55555717e3c0, to_the_left=true, part=0x5555571fa380)
    at ../../../src/textord/colpartitiongrid.cpp:1259
#4  0x000055555560bda0 in tesseract::ColPartitionGrid::FindPartitionPartners (this=0x55555717e3c0) at ../../../src/textord/colpartitiongrid.cpp:1196
#5  0x00005555555f52b6 in tesseract::ColumnFinder::FindBlocks (this=0x55555717e280, pageseg_mode=tesseract::PSM_AUTO, scaled_color=0x0, scaled_factor=-1,
    input_block=0x555555f91390, photo_mask_pix=0x555555f73300, thresholds_pix=0x555555f76290, grey_pix=0x555555f762e0, pixa_debug=0x7ffff7fc88d8, blocks=0x7fffffffd250,
    diacritic_blobs=0x7fffffffd330, to_blocks=0x7fffffffd328) at ../../../src/textord/colfind.cpp:431
#6  0x00005555555c240d in tesseract::Tesseract::AutoPageSeg (this=0x7ffff7fa5010, pageseg_mode=tesseract::PSM_AUTO, blocks=0x555555f761d0, to_blocks=0x7fffffffd328,
    diacritic_blobs=0x7fffffffd330, osd_tess=0x0, osr=0x7fffffffd6d0) at ../../../src/ccmain/pagesegmain.cpp:229
#7  0x00005555555c1ffd in tesseract::Tesseract::SegmentPage (this=0x7ffff7fa5010, input_file=0x555555f7bd90, blocks=0x555555f761d0, osd_tess=0x0, osr=0x7fffffffd6d0)
    at ../../../src/ccmain/pagesegmain.cpp:141
#8  0x0000555555582540 in tesseract::TessBaseAPI::FindLines (this=0x555555a9a580 <main::api>) at ../../../src/api/baseapi.cpp:2291
#9  0x000055555557ce42 in tesseract::TessBaseAPI::Recognize (this=0x555555a9a580 <main::api>, monitor=0x0) at ../../../src/api/baseapi.cpp:802

Signed-off-by: Stefan Weil <sw@weilnetz.de>
@stweil stweil mentioned this pull request May 20, 2018
Merged
@Shreeshrii Shreeshrii mentioned this pull request May 25, 2018
Closed
noahmetzger pushed a commit to noahmetzger/tesseract that referenced this pull request Jul 31, 2018
@stweil @noahmetzger
ColPartition: Add missing initialisation for median_left, median_right
493f2f1 
The following code caused a crash when Tesseract was compiled with -ftrapv:

1259	  int width = right - left;

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
tesseract-ocr#1  0x00007ffff665c231 in __GI_abort () at abort.c:79
tesseract-ocr#2  0x00007ffff69e34d8 in __subvsi3 () from /lib/x86_64-linux-gnu/libgcc_s.so.1
tesseract-ocr#3  0x000055555560c1c5 in tesseract::ColPartitionGrid::FindVPartitionPartners (this=0x55555717e3c0, to_the_left=true, part=0x5555571fa380)
    at ../../../src/textord/colpartitiongrid.cpp:1259
tesseract-ocr#4  0x000055555560bda0 in tesseract::ColPartitionGrid::FindPartitionPartners (this=0x55555717e3c0) at ../../../src/textord/colpartitiongrid.cpp:1196
tesseract-ocr#5  0x00005555555f52b6 in tesseract::ColumnFinder::FindBlocks (this=0x55555717e280, pageseg_mode=tesseract::PSM_AUTO, scaled_color=0x0, scaled_factor=-1,
    input_block=0x555555f91390, photo_mask_pix=0x555555f73300, thresholds_pix=0x555555f76290, grey_pix=0x555555f762e0, pixa_debug=0x7ffff7fc88d8, blocks=0x7fffffffd250,
    diacritic_blobs=0x7fffffffd330, to_blocks=0x7fffffffd328) at ../../../src/textord/colfind.cpp:431
tesseract-ocr#6  0x00005555555c240d in tesseract::Tesseract::AutoPageSeg (this=0x7ffff7fa5010, pageseg_mode=tesseract::PSM_AUTO, blocks=0x555555f761d0, to_blocks=0x7fffffffd328,
    diacritic_blobs=0x7fffffffd330, osd_tess=0x0, osr=0x7fffffffd6d0) at ../../../src/ccmain/pagesegmain.cpp:229
tesseract-ocr#7  0x00005555555c1ffd in tesseract::Tesseract::SegmentPage (this=0x7ffff7fa5010, input_file=0x555555f7bd90, blocks=0x555555f761d0, osd_tess=0x0, osr=0x7fffffffd6d0)
    at ../../../src/ccmain/pagesegmain.cpp:141
tesseract-ocr#8  0x0000555555582540 in tesseract::TessBaseAPI::FindLines (this=0x555555a9a580 <main::api>) at ../../../src/api/baseapi.cpp:2291
tesseract-ocr#9  0x000055555557ce42 in tesseract::TessBaseAPI::Recognize (this=0x555555a9a580 <main::api>, monitor=0x0) at ../../../src/api/baseapi.cpp:802

Signed-off-by: Stefan Weil <sw@weilnetz.de>
zvezdochiot pushed a commit to ImageProcessing-ElectronicPublications/tesseract that referenced this pull request Mar 28, 2021
@stweil @zdenop
cube/char_samp: Fix some memory leaks
b49088d 
Coverity report:

CID 1164722 (tesseract-ocr#9 of 9): Resource leak (RESOURCE_LEAK)
20. leaked_storage: Variable label32 going out of scope leaks the storage
 it points to.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
zvezdochiot pushed a commit to ImageProcessing-ElectronicPublications/tesseract that referenced this pull request Mar 28, 2021
@stweil @zdenop
cube/char_samp: Fix some memory leaks
9808cda 
Coverity report:

CID 1164722 (tesseract-ocr#9 of 9): Resource leak (RESOURCE_LEAK)
20. leaked_storage: Variable label32 going out of scope leaks the storage
 it points to.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
zvezdochiot pushed a commit to ImageProcessing-ElectronicPublications/tesseract that referenced this pull request Mar 28, 2021
@stweil @zdenop
cube/char_samp: Fix some memory leaks
fae3169 
Coverity report:

CID 1164722 (tesseract-ocr#9 of 9): Resource leak (RESOURCE_LEAK)
20. leaked_storage: Variable label32 going out of scope leaks the storage
 it points to.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
zvezdochiot pushed a commit to ImageProcessing-ElectronicPublications/tesseract that referenced this pull request Mar 28, 2021
@stweil @zdenop
cube/char_samp: Fix some memory leaks
b0c0c4d 
Coverity report:

CID 1164722 (tesseract-ocr#9 of 9): Resource leak (RESOURCE_LEAK)
20. leaked_storage: Variable label32 going out of scope leaks the storage
 it points to.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
@tank0123 tank0123 mentioned this pull request Jul 15, 2021
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