Public bug reported:
Regression between 8:6.8.9.9-7ubuntu5.9 and 8:6.8.9.9-7ubuntu5.12.
Test case:
1. Download the attached pngs.
2. Run:
/usr/bin/convert -limit memory 512MiB -limit map 0MiB -limit file 10 -delay 16
-loop 0 -coalesce -deconstruct ./*.png ./output.gif
Expected result:
Process finishes with resulting output.gif.
Actual result:
Process is aborted with SIGSEGV:
Other information:
In my tests looks like it has been introduced in 8:6.8.9.9-7ubuntu5.11 and does
not occur on Bionic.
Stack trace:
#0 EncodeImage (image_info=0x645c40, data_size=<optimized out>,
image=0x636890) at ../../coders/gif.c:676
#1 WriteGIFImage (image_info=0x640700, image=0x636890)
at ../../coders/gif.c:1905
#2 0x00007ffff79a5f0f in WriteImage (image_info=image_info@entry=0x618680,
image=image@entry=0x62cb30) at ../../magick/constitute.c:1184
#3 0x00007ffff79a684f in WriteImages (image_info=image_info@entry=0x60fcd0,
images=<optimized out>, images@entry=0x62cb30, filename=<optimized out>,
exception=exception@entry=0x602ea0) at ../../magick/constitute.c:1335
#4 0x00007ffff763e84e in ConvertImageCommand (image_info=0x60fcd0, argc=19,
argv=0x6143b0, metadata=0x0, exception=0x602ea0)
at ../../wand/convert.c:3215
#5 0x00007ffff76ab527 in MagickCommandGenesis (
image_info=image_info@entry=0x60aab0,
command=0x4007f0 <ConvertImageCommand@plt>, argc=argc@entry=19,
argv=argv@entry=0x7fffffffdc68, metadata=metadata@entry=0x0,
exception=exception@entry=0x602ea0) at ../../wand/mogrify.c:168
#6 0x0000000000400877 in ConvertMain (argv=0x7fffffffdc68, argc=19)
at ../../utilities/convert.c:81
#7 main (argc=19, argv=0x7fffffffdc68) at ../../utilities/convert.c:92
** Affects: imagemagick (Ubuntu)
Importance: High
Status: New
** Tags: regression regression-update
** Attachment added: "SH_HL_08_Step1_F028.png"
https://bugs.launchpad.net/bugs/1793485/+attachment/5190921/+files/SH_HL_08_Step1_F028.png
** Changed in: imagemagick (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1793485
Title:
segfault in png to gif conversion
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