[Bug 725044] Re: graphic corruption while scrolling right
** Bug watch added: gna.org #17573 http://gna.org/bugs/?17573 ** Also affects: fedora via http://gna.org/bugs/?17573 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/725044 Title: SDL rendering issue: graphic corruption while scrolling right -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 725044] Re: graphic corruption while scrolling right
I can confirm the fix at: http://hg.libsdl.org/SDL/rev/d898ee5431f5 fixes this issue from a simple test in wesnoth. Dave ** Bug watch added: Gentoo Bugzilla #357687 http://bugs.gentoo.org/show_bug.cgi?id=357687 ** Also affects: gentoo via http://bugs.gentoo.org/show_bug.cgi?id=357687 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/725044 Title: SDL rendering issue: graphic corruption while scrolling right -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 725044] Re: graphic corruption while scrolling right
This is caused by an optimization introduced in glibc that causes memcpy() to copy in reverse. This breaks code that used memcpy() for overlapping copies in violation of ANSI C. There is a bug at the Fedora bug tracker documenting this where Linus Torvalds posted his two cents: https://bugzilla.redhat.com/show_bug.cgi?id=638477 Anyway, the fix is to apply the patch at the libsdl bug tracker to libsdl. While the fix is trivial, it would be problematic if a major Linux distribution shipped a release with this bug in it. I suggest that this be made a blocker to Ubuntu 11.04's release to ensure that this is addressed before Ubuntu 11.04 ships next month. Also, would the package maintainer take the initiative to notify his Debian counterpart? I am the Gentoo Linux user that filed the Gentoo bug about this and I don't plan to notify many more people. The only reason I cared about this bug on Ubuntu to talk about it here is because it affects someone I know. ** Bug watch added: Red Hat Bugzilla #638477 https://bugzilla.redhat.com/show_bug.cgi?id=638477 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/725044 Title: SDL rendering issue: graphic corruption while scrolling right -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 725044] Re: graphic corruption while scrolling right
srk9 on #ubuntu-devel says this is a memcpy v memmove issue in libsdl and that it just needs a trivial fix from: http://bugzilla.libsdl.org/show_bug.cgi?id=1090 this is likely to impact multiple SDL apps with odd corruption on x86. Dave ** Also affects: libsdl1.2 (Ubuntu) Importance: Undecided Status: New ** Bug watch added: bugzilla.libsdl.org/ #1090 http://bugzilla.libsdl.org/show_bug.cgi?id=1090 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/725044 Title: graphic corruption while scrolling right -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 725044] Re: graphic corruption while scrolling right
https://gna.org/bugs/index.php?17573 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/725044 Title: graphic corruption while scrolling right -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
