build failure: librustc-d252d482-0.11.0-pre.so: undefined reference to `std::__detail::_Prime_rehash_policy::_M_need_rehash(unsigned long, unsigned long, unsigned long) const'

[alsam]

Hello All,

I met the following build failure for the top of tree rust
(last commit 39c1ecd):

rustc: x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/bin/rustc
error: linking with `cc` failed: exit code: 1
note: cc '-m64' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-o' 'x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/bin/rustc' 'x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/bin/rustc.o' '-lmorestack' '-nodefaultlibs' '-Wl,--gc-sections' '-Wl,--as-needed' '-Wl,-O1' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lnative-1fb5e2c0-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lrustc-d252d482-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lsyntax-555559ea-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lflate-92afea7e-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-larena-063bff73-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lgetopts-c94737d1-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lterm-4e4945a5-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lfmt_macros-5125f3bd-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lgraphviz-7b3cf89d-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-ltime-4bb3739b-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lserialize-0352aab7-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lcollections-d412c0c4-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-llog-cd053230-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lsync-305341d2-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lrand-2ea8f361-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lstd-59beb4f7-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-llibc-4f9a876d-0.11.0-pre' '-L' '/opt/scratch/work/rust/rust/.rust' '-L' '/opt/scratch/work/rust/rust' '-Wl,-Bdynamic' '-lpthread' '-lrt' '-ldl' '-lm' '-lstdc++' '-lrt' '-ldl' '-lpthread' '-lgcc_s' '-lpthread' '-lc' '-lm' '-Wl,-rpath,$ORIGIN/../lib' '-Wl,-rpath,/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib' '-lcompiler-rt'
note: /opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-d252d482-0.11.0-pre.so: undefined reference to `std::__detail::_Prime_rehash_policy::_M_next_bkt(unsigned long) const'
/opt/scratch/work/rust/rust/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-d252d482-0.11.0-pre.so: undefined reference to `std::__detail::_Prime_rehash_policy::_M_need_rehash(unsigned long, unsigned long, unsigned long) const'
collect2: ld returned 1 exit status

The compiler used for building

g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/gcc_4_8/libexec/gcc/x86_64-linux-gnu/4.8.1/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../gcc-4.8.1/configure --build=x86_64-linux-gnu --prefix=/usr/gcc_4_8 --with-gmp=/usr/gcc_4_8 --with-mpfr=/usr/gcc_4_8 --with-mpc=/usr/gcc_4_8 --enable-checking=release --enable-languages=c,c++,fortran --disable-multilib --program-suffix=-4.8
Thread model: posix
gcc version 4.8.1 (GCC) 

Thanks

[alexcrichton]

I've seen this happen when there's a stale LLVM build lying around or possibly when clang/gcc get mixed up when building LLVM. Do either of those ring a bell for you? Also, have you tried building from a fresh checkout?

[alsam]

Thanks a lot for the hint.
Indeed it was a conflict between outdated /usr/bin/cc

ll `which cc`
lrwxrwxrwx 1 root root 20 Oct 21  2010 /usr/bin/cc -> /etc/alternatives/cc*
asamoilov@atlant:/opt/scratch/work/rust/rust$ ll /etc/alternatives/cc
lrwxrwxrwx 1 root root 12 Oct 21  2010 /etc/alternatives/cc -> /usr/bin/gcc*

and gcc-4.8.1
installed in other place. After resolving the conflict the build process passed smoothly.
So actually this is not a bug.