Package: gcc-3.3 Version: 1:3.3-2 Severity: important Tags: upstream, moreinfo
You're going to need more information from me on this, I'm sure, but I'm filing the bug now so I don't forget to file it at all. When testing XFree86 4.2.1-7 on my PowerPC I found that compiling the tree with -O2 (per Debian Policy) and GCC 3.3 caused the X server to break such that XDM-AUTHORIZATION-1 Xauth tokens could not be validated. I have not narrowed this down. I do know that using the 4.2.1-6 server with the 4.2.1-7 libraries worked fine, so I suspect a miscompilation on the server side, but it is conceivable that the problem is really on the client/library side and that GCC 3.3 is exposing a very subtle error in the code. Or something like that. Compiling with -O instead of -O2 made the problem go away, and that's the optimization level that was used for the 4.2.1-7 packages for PowerPC which were uploaded. Anyway, I have heard rumors that the GCC team knows that there are problems with this optimization level on PowerPC in GCC 3.3. Something about a bunch of new subtargets being added to the ppc/ELF backend in this release? Please nag me for more information if too much time passes and I have not followed up. Alternatively some person might be willing to track this down for me using the recipe above. Just take the 4.2.1-7 source package and remove the special case optimization stepdown for powerpc from the debian/rules file. Compile XFree86, install the resulting packages, and use xdm to (attempt) to start a session. You'll also notice that the bustage keeps the xdm greeter from working properly. -- System Information: Debian Release: testing/unstable Architecture: powerpc Kernel: Linux redwald 2.4.19-powerpc #1 Mon Sep 9 09:01:43 EDT 2002 ppc Locale: LANG=C, LC_CTYPE=en_US Versions of packages gcc-3.3 depends on: ii binutils 2.14.90.0.4-0.1 The GNU assembler, linker and bina ii cpp-3.3 1:3.3-2 The GNU C preprocessor ii gcc-3.3-base 1:3.3-2 The GNU Compiler Collection (base ii libc6 2.3.1-17 GNU C Library: Shared libraries an ii libgcc1 1:3.3-2 GCC support library -- no debconf information