模块崩溃时未处理Python异常

我正在通过魔杖导入ImageMagick:

来自魔杖。图像导入图像

然后我使用它从图像中获取数据：

try :
    with Image(filename='./my_image.png') as img:
        sys.stderr.write('SHA-256 message digest for the image pixel stream : ' + img.signature + '\n')
except :
    print("Oops! ",sys.exc_info()[0]," occured.")

但对于格式不正确的映像（），异常处理不正确，脚本崩溃，并显示以下消息：

python:../magick/quantum.c:216:DestroyQuantumInfo:Assertion`quantum\u info！=（QuantumInfo*）NULL'失败

为什么没有正确处理异常

我使用的ImageMagick版本（我想这是我正在使用的Ubuntu 18.04.2 LTS的默认版本）：

正如评论中所建议的，我正在寻找ImageMagick bug：

$ identify -debug All line-numbers.png 
2019-05-31T16:20:42+02:00 0:00.000 0.000u 6.9.7 Configure identify-im6.q16[30840]: utility.c/ExpandFilenames/940/Configure
  Command line: identify {-debug} {All} {line-numbers.png}
2019-05-31T16:20:42+02:00 0:00.000 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/share/ImageMagick-6/coder.xml"
2019-05-31T16:20:42+02:00 0:00.000 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//config-Q16/coder.xml"
2019-05-31T16:20:42+02:00 0:00.000 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/etc/ImageMagick-6/coder.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/share/doc/imagemagick-6-common/htmlcoder.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/home/username/.config/ImageMagick/coder.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/home/username/.magick/coder.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: coder.c/LoadCoderCache/826/Configure
  Loading coder configuration file "/etc/ImageMagick-6/coder.xml" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/OpenModule/1288/Module
  Searching for module "PNG" using filename "png.la"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/GetMagickModulePath/558/Module
  Searching for coder module file "png.la" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/OpenModule/1297/Module
  Opening module at path "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//modules-Q16/coders/png.la"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/OpenModule/1324/Module
  Method "RegisterPNGImage" in module "PNG" at address 0x7fac6c16f1c0
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/OpenModule/1338/Module
  Method "UnregisterPNGImage" in module "PNG" at address 0x7fac6c16f770
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Policy identify-im6.q16[30840]: policy.c/IsRightsAuthorized/580/Policy
  Domain: Path; rights=Read; pattern="line-numbers.png" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Blob identify-im6.q16[30840]: blob.c/OpenBlob/2593/Blob
    read 3 magic header bytes
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/share/ImageMagick-6/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//config-Q16/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/etc/ImageMagick-6/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/share/doc/imagemagick-6-common/htmlmagic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/home/username/.config/ImageMagick/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/home/username/.magick/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: magic.c/LoadMagicCache/794/Configure
  Loading magic configure file "/etc/ImageMagick-6/magic.xml" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Policy identify-im6.q16[30840]: policy.c/IsRightsAuthorized/580/Policy
  Domain: Coder; rights=Read; pattern="PNG" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Policy identify-im6.q16[30840]: policy.c/IsRightsAuthorized/580/Policy
  Domain: Path; rights=Read; pattern="line-numbers.png" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Blob identify-im6.q16[30840]: blob.c/OpenBlob/2593/Blob
    read 3 magic header bytes
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/ReadPNGImage/3940/Coder
  Enter ReadPNGImage()
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Policy identify-im6.q16[30840]: policy.c/IsRightsAuthorized/580/Policy
  Domain: Path; rights=Read; pattern="line-numbers.png" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Blob identify-im6.q16[30840]: blob.c/OpenBlob/2593/Blob
    read 3 magic header bytes
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/ReadOnePNGImage/2042/Coder
    Enter ReadOnePNGImage()
    IM version     = 6.9.7-4
    Libpng version = 1.6.34
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/ReadOnePNGImage/2055/Coder
      Zlib version   = 1.2.11
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/ReadOnePNGImage/2085/Coder
      Before reading:
      image->matte=0
      image->rendering_intent=2
      image->colorspace=13
      image->gamma=0.454545
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/MagickPNGWarningHandler/1651/Coder
    libpng-1.6.34 warning: Image height exceeds user limit in IHDR
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/share/ImageMagick-6/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//config-Q16/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/etc/ImageMagick-6/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/share/doc/imagemagick-6-common/htmllocale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/home/username/.config/ImageMagick/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/home/username/.magick/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: locale.c/LoadLocaleCache/1177/Configure
  Loading locale configure file "/usr/share/ImageMagick-6/locale.xml" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/share/ImageMagick-6/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//config-Q16/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/etc/ImageMagick-6/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/share/doc/imagemagick-6-common/htmlenglish.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/home/username/.config/ImageMagick/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/home/username/.magick/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: locale.c/LoadLocaleCache/1177/Configure
  Loading locale configure file "/usr/share/ImageMagick-6/english.xml" ...
2019-05-31T16:20:42+02:00 0:00.020 0.000u 6.9.7 Exception identify-im6.q16[30840]: png.c/MagickPNGWarningHandler/1654/Exception
  Image height exceeds user limit in IHDR `line-numbers.png'
2019-05-31T16:20:42+02:00 0:00.020 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/MagickPNGErrorHandler/1625/Coder
    libpng-1.6.34 error: Invalid IHDR data
2019-05-31T16:20:42+02:00 0:00.020 0.000u 6.9.7 Exception identify-im6.q16[30840]: png.c/MagickPNGErrorHandler/1628/Exception
  Invalid IHDR data `line-numbers.png'
identify: ../../magick/quantum.c :216 : DestroyQuantumInfo:  l'assertion « quantum_info != (QuantumInfo *) NULL » a échoué.
Abandon

---

编辑：我已经将问题提交到ImageMagick Bugs论坛：

你能修复代码格式吗？请注意，我刚刚注意到它到处都是，我已经修复了格式，这也不例外。异常处理只处理异常。好的，那么如果映像格式不正确，我如何处理模块中发生此类崩溃的风险呢？我已经添加了一个指向格式不正确映像的链接，以防任何人想要测试代码。图像是一个PNG，显示了一个很长的数字列表，称为line-numbers。PNG你能修复代码格式吗？请注意，我刚刚注意到它到处都是，我已经修复了格式，这不是一个例外。异常处理只处理异常。好的，那么如果映像格式不正确，我如何处理模块中发生此类崩溃的风险呢？我已经添加了一个指向格式不正确映像的链接，以防任何人想要测试代码。该图像是一个PNG，显示很长的数字列表，称为line-numbers.PNG

$ identify -debug All line-numbers.png 
2019-05-31T16:20:42+02:00 0:00.000 0.000u 6.9.7 Configure identify-im6.q16[30840]: utility.c/ExpandFilenames/940/Configure
  Command line: identify {-debug} {All} {line-numbers.png}
2019-05-31T16:20:42+02:00 0:00.000 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/share/ImageMagick-6/coder.xml"
2019-05-31T16:20:42+02:00 0:00.000 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//config-Q16/coder.xml"
2019-05-31T16:20:42+02:00 0:00.000 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/etc/ImageMagick-6/coder.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/share/doc/imagemagick-6-common/htmlcoder.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/home/username/.config/ImageMagick/coder.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/home/username/.magick/coder.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: coder.c/LoadCoderCache/826/Configure
  Loading coder configuration file "/etc/ImageMagick-6/coder.xml" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/OpenModule/1288/Module
  Searching for module "PNG" using filename "png.la"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/GetMagickModulePath/558/Module
  Searching for coder module file "png.la" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/OpenModule/1297/Module
  Opening module at path "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//modules-Q16/coders/png.la"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/OpenModule/1324/Module
  Method "RegisterPNGImage" in module "PNG" at address 0x7fac6c16f1c0
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Module identify-im6.q16[30840]: module.c/OpenModule/1338/Module
  Method "UnregisterPNGImage" in module "PNG" at address 0x7fac6c16f770
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Policy identify-im6.q16[30840]: policy.c/IsRightsAuthorized/580/Policy
  Domain: Path; rights=Read; pattern="line-numbers.png" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Blob identify-im6.q16[30840]: blob.c/OpenBlob/2593/Blob
    read 3 magic header bytes
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/share/ImageMagick-6/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//config-Q16/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/etc/ImageMagick-6/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/usr/share/doc/imagemagick-6-common/htmlmagic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/home/username/.config/ImageMagick/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: configure.c/GetConfigureOptions/685/Configure
  Searching for configure file: "/home/username/.magick/magic.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: magic.c/LoadMagicCache/794/Configure
  Loading magic configure file "/etc/ImageMagick-6/magic.xml" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Policy identify-im6.q16[30840]: policy.c/IsRightsAuthorized/580/Policy
  Domain: Coder; rights=Read; pattern="PNG" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Policy identify-im6.q16[30840]: policy.c/IsRightsAuthorized/580/Policy
  Domain: Path; rights=Read; pattern="line-numbers.png" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Blob identify-im6.q16[30840]: blob.c/OpenBlob/2593/Blob
    read 3 magic header bytes
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/ReadPNGImage/3940/Coder
  Enter ReadPNGImage()
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Policy identify-im6.q16[30840]: policy.c/IsRightsAuthorized/580/Policy
  Domain: Path; rights=Read; pattern="line-numbers.png" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Blob identify-im6.q16[30840]: blob.c/OpenBlob/2593/Blob
    read 3 magic header bytes
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/ReadOnePNGImage/2042/Coder
    Enter ReadOnePNGImage()
    IM version     = 6.9.7-4
    Libpng version = 1.6.34
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/ReadOnePNGImage/2055/Coder
      Zlib version   = 1.2.11
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/ReadOnePNGImage/2085/Coder
      Before reading:
      image->matte=0
      image->rendering_intent=2
      image->colorspace=13
      image->gamma=0.454545
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/MagickPNGWarningHandler/1651/Coder
    libpng-1.6.34 warning: Image height exceeds user limit in IHDR
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/share/ImageMagick-6/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//config-Q16/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/etc/ImageMagick-6/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/share/doc/imagemagick-6-common/htmllocale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/home/username/.config/ImageMagick/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/home/username/.magick/locale.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: locale.c/LoadLocaleCache/1177/Configure
  Loading locale configure file "/usr/share/ImageMagick-6/locale.xml" ...
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/share/ImageMagick-6/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7//config-Q16/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/etc/ImageMagick-6/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/usr/share/doc/imagemagick-6-common/htmlenglish.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/home/username/.config/ImageMagick/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Locale identify-im6.q16[30840]: locale.c/GetLocaleOptions/824/Locale
  Searching for locale file: "/home/username/.magick/english.xml"
2019-05-31T16:20:42+02:00 0:00.010 0.000u 6.9.7 Configure identify-im6.q16[30840]: locale.c/LoadLocaleCache/1177/Configure
  Loading locale configure file "/usr/share/ImageMagick-6/english.xml" ...
2019-05-31T16:20:42+02:00 0:00.020 0.000u 6.9.7 Exception identify-im6.q16[30840]: png.c/MagickPNGWarningHandler/1654/Exception
  Image height exceeds user limit in IHDR `line-numbers.png'
2019-05-31T16:20:42+02:00 0:00.020 0.000u 6.9.7 Coder identify-im6.q16[30840]: png.c/MagickPNGErrorHandler/1625/Coder
    libpng-1.6.34 error: Invalid IHDR data
2019-05-31T16:20:42+02:00 0:00.020 0.000u 6.9.7 Exception identify-im6.q16[30840]: png.c/MagickPNGErrorHandler/1628/Exception
  Invalid IHDR data `line-numbers.png'
identify: ../../magick/quantum.c :216 : DestroyQuantumInfo:  l'assertion « quantum_info != (QuantumInfo *) NULL » a échoué.
Abandon