Package: zbar-tools Version: 0.10+doc-10+b1 Followup-For: Bug #790492 The backtrace from GDB suggests that this is a bug in ImageMagick. Using the "convert" command from ImageMagick gives the same result.
$ convert http://test.test/ out.png error : No such file or directory error : Unknown IO error error : Unknown IO error error : Unknown IO error [...] error : Unknown IO error Segmentation fault What's interesting is that it only fails on such URLs when there is no file extension. Adding a file extension (even an invalid one!) gives: $ zbarimg http://test.test/image.png error : No such file or directory ERROR: no data returned `http://test.test/image.png' @ error/url.c/ReadURLImage/263 $ zbarimg http://test.test/image.zzzz error : No such file or directory ERROR: no data returned `http://test.test/image.zzzz' @ error/url.c/ReadURLImage/263 $ convert http://test.test/image.png image.jpg error : No such file or directory convert: improper image header `/tmp/magick-10658RpyovmhF6oer' @ error/png.c/ReadPNGImage/3930. convert: no data returned `http://test.test/image.png' @ error/url.c/ReadURLImage/263. convert: no images defined `image.jpg' @ error/convert.c/ConvertImageCommand/3210. $ convert http://test.test/image.zzzz image.jpg error : No such file or directory convert: no decode delegate for this image format `ZZZZ' @ error/constitute.c/ReadImage/501. convert: no data returned `http://test.test/image.zzzz' @ error/url.c/ReadURLImage/263. convert: no images defined `image.jpg' @ error/convert.c/ConvertImageCommand/3210. I believe this bug should be reassigned to MagickWand (libmagickwand-6.q16-2). Kyanos P.S. Information from Reportbug is provided in case it is useful. -- System Information: Debian Release: stretch/sid APT prefers testing APT policy: (500, 'testing'), (300, 'oldstable-updates'), (300, 'oldstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.5.0-2-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages zbar-tools depends on: ii libc6 2.22-9 ii libgomp1 6.1.1-4 ii libjpeg62-turbo 1:1.4.2-2 ii libmagickcore-6.q16-2 8:6.8.9.9-7.1 ii libmagickwand-6.q16-2 8:6.8.9.9-7.1 ii libv4l-0 1.10.0-2 ii libzbar0 0.10+doc-10+b1 zbar-tools recommends no packages. zbar-tools suggests no packages. -- no debconf information

