Your message dated Sun, 28 Oct 2018 23:29:15 +0100 with message-id <[email protected]> and subject line There are no -xpm/-noxpm packages nor gd 2.0.x in (old)stable has caused the Debian Bug report #276441, regarding libgd2 2.0.28-3 : Reentrance problems in APIs gdImagePngCtx,gdImageCreateFromPngPtr,gdImageCreateFromGifPtr ? to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 276441: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=276441 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: libgd2 Version: 2.0.28-3 Hello, I'm currently working with libgd 2.0.28 (and libgd2-dev) under the last unstable Debian distribution has shown : ---------------------------------------------------------- # uname -a && gcc -v && dpkg -l | grep libgd Linux uranus 2.4.19 #3 SMP Tue Jun 8 11:20:12 CEST 2004 i686 GNU/Linux Reading specs from /usr/lib/gcc-lib/i486-linux/3.3.5/specs Configured with: ../src/configure -v --enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-gxx-include-dir=/usr/include/c++/3.3 --enable-shared --with-system-zlib --enable-nls --without-included-gettext --enable-__cxa_atexit --enable-clocale=gnu --enable-debug --enable-java-gc=boehm --enable-java-awt=xlib --enable-objc-gc i486-linux Thread model: posix gcc version 3.3.5 (Debian 1:3.3.5-1) ii libgd-gif1 1.3-5 GD Graphics Library with gif support ii libgd1 1.8.4-36 GD Graphics Library (transitional package) ii libgd1-noxpm 1.8.4-36 GD Graphics Library (old version, without XP ii libgd2 2.0.28-3 GD Graphics Library version 2 ii libgd2-dev 2.0.28-3 GD Graphics Library version 2 (development v ii libgd2-noxpm 2.0.28-3 GD Graphics Library version 2 (without XPMs ii libgd2-noxpm-d 2.0.28-3 GD Graphics Library version 2 (development ii libgdbm3 1.8.3-2 GNU dbm database routines (runtime version) ii libgdbmg1 1.7.3-28 GNU dbm database routines (runtime version) ii libgdk-pixbuf2 0.22.0-7 The GdkPixBuf image library, gtk+ 1.2 versio dpkg --status libgd2 Package: libgd2 Status: install ok installed Priority: optional Section: libs Installed-Size: 332 Maintainer: Jonas Smedegaard <[email protected]> Architecture: all Version: 2.0.28-3 Replaces: libgd-tools (<< 2.0.0) Depends: libgd2-noxpm (>= 2.0.4-2) | libgd2-xpm (>= 2.0.4-2) Suggests: libgd-tools Conflicts: libgd-tools (<< 2.0.0) Description: GD Graphics Library version 2 GD is a graphics library... . This is a transitional package, provided for backwards compatibility only. You can safely remove this package when no other package depend on it. uranus:~# dpkg --status libgd2-dev Package: libgd2-dev Status: install ok installed Priority: optional Section: devel Installed-Size: 332 Maintainer: Jonas Smedegaard <[email protected]> Architecture: all Source: libgd2 Version: 2.0.28-3 Depends: libgd2-noxpm-dev (>= 2.0.4-2) | libgd2-xpm-dev (>= 2.0.4-2) Conflicts: libgd-dev, libgd1g-dev, libgd1-altdev Description: GD Graphics Library version 2 (development version) GD is a graphics library... . This is a transitional package, provided for backwards compatibility only. You can safely remove this package when no other package depend on it. ---------------------------------------------------------- We have written a multi-threaded application which is handling JPEG,PNG and GIF images with libgd2. This application was going very eratic while processing multiple PNG/GIF images at the same time in different threads. While debugging it with the helgrind tool for valgrind we found out those nasty things : ==22686== Possible data race writing variable at 0x1D56038C ==22686== at 0x1D6982CD: _setjmp (in /lib/libc-2.3.2.so) ==22686== by 0x1D529DCE: gdImagePngCtx (in /usr/lib/libgd.so.2.0.28) ==22686== Address 0x1D56038C is in BSS section of /usr/lib/libgd.so.2.0.28 and almost the same thing for APIs gdImageCreateFromPngPtr and gdImageCreateFromGifPtr. Protecting the calls to gdImagePngCtx,gdImageCreateFromPngPtr,gdImageCreateFromGifPtr in a critical section with a mutex seemed to solve the problems. I suggest to assure the reentrance of these functions. What do you think of it ? Thanks for your help, Have a nice day.
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--- Begin Message ---Version: 2.1.0-5 Just cleaning up old bugreports… If you believe that the bug is still present in stable version of Debian, please update the bug accordingly and reopen it. Thanks, -- Ondřej Surý [email protected]
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