Re: dpkg bus error on sparc/unstable: Re: Bits from the RM
On Tue, Aug 26, 2003 at 12:29:09PM -0500, Adam Heath wrote: Well, if I compile lib/myopt.c and lib/startup.c, without -O2, I get no bus error. Maybe this is a gcc issue? It's probably a good idea to try gcc-snapshot and see if this has been fixed already. In the worst cases, gcc hackers sometimes use binary searches of the CVS repository to find out when something broke, or when something was fixed. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: dpkg bus error on sparc/unstable: Re: Bits from the RM
On Tue, Aug 26, 2003 at 12:29:09PM -0500, Adam Heath wrote: vore:~ dpkg Bus error Well, if I compile lib/myopt.c and lib/startup.c, without -O2, I get no bus error. Maybe this is a gcc issue? FWIW, the comment here http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11366#c8 originally dealing with the XDM-AUTHORIZATION cookie issue, applies equally well to these sorts of situation. If someone works it down to a flag, or a combination of flags, and a preprocessed source file, then GCC's upstream can hack on it. -- Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. - Brian W. Kernighan -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
dpkg bus error on sparc/unstable: Re: Bits from the RM
On Tue, 26 Aug 2003, GOTO Masanori wrote: At Mon, 25 Aug 2003 19:01:14 -0500 (CDT), Adam Heath wrote: On Fri, 22 Aug 2003, GOTO Masanori wrote: It was reported by joshk on IRC, but I'm not still clear where this problem come from. Example: ultra30:~ dpkg -s libc6 | grep Version Version: 2.3.2-3 ultra30:~ dpkg -s dpkg | grep Version Version: 1.10.10 ultra30:~ dpkg Bus error dpkg works well with some options, but only typing `dpkg' breaks with bus error. It's not related with the existence of libc6-sparc64. From tracking with gdb, dpkg breaks setjmp()/longjmp(). The mysterious thing is that it works fine to compile gcc-3.2/gcc-3.3 without -O2 optimization. It's also ok with glibc 2.3.1-17, IIRC. Hmm. I'm reminded of a problem on s390x. 64-bit arch, but when dpkg was initializing some variable, it only did it to the lower(or upper, can't recall) 32 bits. Later, it blew up. dpkg works fine with trex.debian.org dchroot unstable + my self built 2.3.2-1 (2003-07-08 cvs) using LD_LIBRARY_PATH, so it seems other issue. It's too bad valgrind doesn't work on non-i386. Is there a debian machine I can access that has this problem? The last 2 times some odd issue came up like this, one turned out to be a dpkg bug(s390x), and one was a multi-year old bug in libc6 assem(memcpy error, at the end of the buffer, when using mmap, on alpha). In both cases, it didn't take me long to track down(not more than half a day). Yes, you can check on vore.debian.org dchroot unstable. vore:~ dpkg Bus error Well, if I compile lib/myopt.c and lib/startup.c, without -O2, I get no bus error. Maybe this is a gcc issue? -- (unstable)[EMAIL PROTECTED]:~/dpkg-1.10.10$ gcc -v Reading specs from /usr/lib/gcc-lib/sparc-linux/3.3.2/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 --with-cpu=v7 --enable-objc-gc sparc-linux Thread model: posix gcc version 3.3.2 20030812 (Debian prerelease) (unstable)[EMAIL PROTECTED]:~/dpkg-1.10.10$ dpkg -s libc6 Version: 2.3.2-3 -- dpkg is 1.10.10. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: dpkg bus error on sparc/unstable: Re: Bits from the RM
On Tue, 26 Aug 2003, Adam Heath wrote: Well, if I compile lib/myopt.c and lib/startup.c, without -O2, I get no bus error. Maybe this is a gcc issue? gcc 3.2 also fails, but 2.95 works fine, no errors. doogie lib/myopt.c(loadcfgfile) mrvn doogie: Did that ever stop anything from breaking? doogie with -O2, it fails in that function, on the last free doogie when I remove -O2, it fails in lib/startup.c:standard_startup doogie removing -O2 from that file, and it works(I don't know where it failed in that function) ps: compiling statically with 2.95 and libc 2.3.2-2 fails, with: gcc-2.95 -L../lib -L../optlib -static -o md5sum-static md5sum.o -ldpkg -lopt /usr/lib/gcc-lib/sparc-linux/2.95.4/libgcc.a(_udivdi3.o)(.text+0xac): In function `__udivdi3': : undefined reference to `.udiv' /usr/lib/gcc-lib/sparc-linux/2.95.4/libgcc.a(_umoddi3.o)(.text+0xac): In function `__umoddi3': : undefined reference to `.udiv' -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
