Bug#769218: gcc-4.9: FTBFS in jessie: Error! CRCs do not match! Got 264aca47, expected 95962ba4
Dear debian-gcc, When building current stable's gcc-4.9 I encountered bug 769218 and I was also able to get a successful build on the same machine. System: Dual Xeon L5640 (24 threads) with 32 GB RAM, and all disk-based filesystems residing on a magnetic hdd. The host system contains debian jessie. The pbuilder base.tgz contains jessie. On this system, so far I have observed: Attempt 1 working directory on a disk-based file system Build method: apt-get build-dep gcc-4.9, apt-get source gcc-4.9, debuild -us -uc -b Result: Successful build Attempt 2 Build method: apt-get source gcc-4.9, pbuilder build *.dsc Result: Successful build Attempt 3 /var/cache/pbuilder/build mounted on 16 GB tmpfs, APTCACHEHARDLINK=no in .pbuilderrc Build method: apt-get source gcc-4.9, pbuilder build *.dsc Result: Fails with exactly the CRC error reported in #769218. Attempt 4 /dev/shm on a 16 GB tmpfs, /tmp on a 16 GB tmpfs Build method: cd /dev/shm/gcc, apt-get build-dep gcc-4.9, apt-get source gcc-4.9, debuild -us -uc -b Result: Fails with a different CRC error at the same point. Given that the failures happen specifically when the build can use 24 threads and (almost) everything is in RAM, I suspect there is some race condition that does not show up when the build or its temporary files have to go through a relatively slow disk. Another explanation would be that the tmpfs is too small, but the successful build does not seem to need that much disk space either. If the debian-gcc people want to find out more, I would be willing to do additional tests or otherwise help to find the cause. However, I can imagine that it would not be worth the effort anymore for gcc-4.9 at this point in time. Please give some indication of how serious you consider the situation that gcc in debian stable seems to have a FTBFS bug that occurs under specific (I think mostly build-host-related) circumstances. Best regards, Frans van der Have.
Bug#769218: gcc-4.9: FTBFS in jessie: Error! CRCs do not match! Got 264aca47, expected 95962ba4
Source: gcc-4.9
Version: 4.9.1-19
Severity: serious
Tags: jessie sid
User: debian...@lists.debian.org
Usertags: qa-ftbfs-2014-11-11 qa-ftbfs
Justification: FTBFS in jessie on amd64
Hi,
During a rebuild of all packages in jessie (in a jessie chroot, not a
sid chroot), your package failed to build on amd64.
Relevant part (hopefully):
make[2]: Entering directory '/«PKGBUILDDIR»/build/x86_64-linux-gnu/libjava'
rm -f src.zip
here=`pwd`; \
( \
( cd ../../../src/libjava/classpath; \
find java gnu javax org sun -name '*.java' -print | \
while read file; do \
echo x-C | sed -e 's/^.//'; \
echo ../../../src/libjava/classpath; \
echo $file; \
done ); \
( cd ../../../src/libjava/classpath/external/sax; \
find org -name '*.java' -print | \
while read file; do \
echo x-C | sed -e 's/^.//'; \
echo ../../../src/libjava/classpath/external/sax; \
echo $file; \
done ); \
( cd ../../../src/libjava/classpath/external/relaxngDatatype; \
find org -name '*.java' -print | \
while read file; do \
echo x-C | sed -e 's/^.//'; \
echo ../../../src/libjava/classpath/external/relaxngDatatype; \
echo $file; \
done ); \
( cd ../../../src/libjava/classpath/external/w3c_dom; \
find org -name '*.java' -print | \
while read file; do \
echo x-C | sed -e 's/^.//'; \
echo ../../../src/libjava/classpath/external/w3c_dom; \
echo $file; \
done ); \
( cd classpath; \
find gnu java -name '*.java' -print | \
while read file; do \
echo x-C | sed -e 's/^.//'; \
echo `pwd`; \
echo $file; \
done ); \
) | \
jar -cfM@ $here/src.zip
find: `java': No such file or directory
here=`pwd`; \
( \
( cd ../../../src/libjava; \
find gnu java -name '*.java' -print | \
while read file; do \
echo x-C | sed -e 's/^.//'; \
echo ../../../src/libjava; \
echo $file; \
done ); \
) | \
jar -ufM@ $here/src.zip
make[2]: Leaving directory '/«PKGBUILDDIR»/build/x86_64-linux-gnu/libjava'
touch stamps/05-build-javasrc-stamp
dh_testdir
dh_testroot
dh_installdirs -pgcj-4.9-source usr/share/java
/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64
cp -p /«PKGBUILDDIR»/build/x86_64-linux-gnu/libjava/src.zip \
debian/gcj-4.9-source/usr/share/java/libgcj-src-4.9.zip
dh_link -pgcj-4.9-source \
usr/share/java/libgcj-src-4.9.zip \
/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/src.zip
debian/dh_doclink -pgcj-4.9-source gcc-4.9-base
WARNING: removing doc directory gcj-4.9-source
debian/dh_rmemptydirs -pgcj-4.9-source
dh_compress -pgcj-4.9-source
dh_fixperms -pgcj-4.9-source
dh_gencontrol -pgcj-4.9-source -- -v4.9.1-19 '-Vlibgcc:Version=1:4.9.1-19'
'-Vgcc:Version=4.9.1-19' '-Vgcc:EpochVersion=1:4.9.1-19'
'-Vgcc:SoftVersion=4.9' '-Vgdc:Version=4.9.1-19' '-Vgcj:Version=4.9.1-19'
'-Vgcj:SoftVersion=4.9' '-Vgcj:BaseVersion=4.9' '-Vgnat:Version=4.9.1-19'
'-Vbinutils:Version=2.24.90.20141023' '-Vdep:libgcc=libgcc1 (= 1:4.9.1-19)'
'-Vdep:libgccdev=libgcc-4.9-dev (= 4.9.1-19)' '-Vdep:libgccbiarch=lib32gcc1
(= 1:4.9.1-19), libx32gcc1 (= 1:4.9.1-19)'
'-Vdep:libgccbiarchdev=lib32gcc-4.9-dev (= ${gcc:Version}), libx32gcc-4.9-dev
(= ${gcc:Version})' '-Vdep:libc=libc6 (= 2.11)' '-Vdep:libcdev=libc6-dev (=
2.13-5)' '-Vdep:libcbiarch=${shlibs:Depends}'
'-Vdep:libcbiarchdev=libc6-dev-i386 (= 2.11), libc6-dev-x32 (= 2.11)'
'-Vdep:libunwinddev=' '-Vdep:libcxxbiarchdev=lib32stdc++-4.9-dev (=
${gcc:Version}), libx32stdc++-4.9-dev (= ${gcc:Version})'
'-Vdep:libcxxbiarchdbg=lib32stdc++6-4.9-dbg (= ${gcc:Version}),
libx32stdc++6-4.9-dbg (= ${gcc:Version})' '-Vdep:libgnat='
'-Vdep:ecj=ecj-gcj, libecj-java-gcj (= 3.5.1)' '-Vdep:libcloog='
'-Vgcc:multilib=gcc-4.9-multilib' '-Vgxx:multilib=g++-4.9-multilib'
'-Vgobjc:multilib=gobjc-4.9-multilib'
'-Vgobjcxx:multilib=gobjc++-4.9-multilib'
'-Vgfortran:multilib=gfortran-4.9-multilib' '-Vdep:gold=binutils-gold (=
2.24.90.20141023)' '-Vdep:libgomp=libgomp1 (= ${gcc:Version})'
'-Vdep:libitm=libitm1 (= ${gcc:Version})' '-Vdep:libatomic=libatomic1 (=
${gcc:Version})' '-Vdep:libasan=libasan1 (= ${gcc:Version})'
'-Vdep:liblsan=liblsan0 (= ${gcc:Version})' '-Vdep:libtsan=libtsan0 (=
${gcc:Version})' '-Vdep:libubsan=libubsan0 (= ${gcc:Version})'
'-Vdep:libcilkrts=libcilkrts5 (= ${gcc:Version})'
'-Vdep:libqmath=libquadmath0 (= ${gcc:Version})'
'-Vdep:libgfortranbiarchdev=lib32gfortran-4.9-dev (= ${gcc:Version}),
libx32gfortran-4.9-dev (= ${gcc:Version})'
'-Vdep:libobjcbiarchdev=lib32objc-4.9-dev (= ${gcc:Version}),
libx32objc-4.9-dev (= ${gcc:Version})' '-Vdep:libgompbiarch=lib32gomp1 (=
${gcc:Version}), libx32gomp1 (= ${gcc:Version})'
'-Vdep:libitmbiarch=lib32itm1 (= ${gcc:Version}), libx32itm1 (=
${gcc:Version})' '-Vdep:libatomicbiarch=lib32atomic1 (= ${gcc:Version}),
libx32atomic1 (= ${gcc:Version})' '-Vdep:libasanbiarch=lib32asan1 (=
${gcc:Version}), libx32asan1 (= ${gcc:Version})'
'-Vdep:libubsanbiarch=lib32ubsan0 (=
