Package: clang-16
Version: 1:16.0.6-26
Severity: normal
Dear Maintainer,
I was trying to track down a regression reported by the ClusterFuzz
service, and when I try to build the fuzzing reproducer on trixie, it
fails. However, it works on Bookworm. So while I can work around the
problem by using the Bookworm chroot, this is not a great long-term
solution.
There are two problems; the first is that clang isn't finding the
algorithm header file. Using e2fsprogs sources with:
configure CC=clang-16 CFLAGS=-g CXX=clang++-16 --enable-fuzzing --enable-ubsan
% cd tests/fuzz
% make V=1 ext2fs_image_read_write_fuzzer
clang++-16 -c -I. -I../../lib -I/usr/projects/e2fsprogs/e2fsprogs/lib
-fsanitize=undefined -g -I/usr/include/fuse3 -pthread -DHAVE_CONFIG_H
-fsanitize=fuzzer
/usr/projects/e2fsprogs/e2fsprogs/tests/fuzz/ext2fs_image_read_write_fuzzer.cc
-o ext2fs_image_read_write_fuzzer.o
In file included from
/usr/projects/e2fsprogs/e2fsprogs/tests/fuzz/ext2fs_image_read_write_fuzzer.cc:27:
/usr/lib/llvm-16/lib/clang/16/include/fuzzer/FuzzedDataProvider.h:16:10: fatal
error:
'algorithm' file not found
#include <algorithm>
^~~~~~~~~~~
1 error generated.
The second problem is that it's not finding -lstdc++:
% make V=1 ext2fs_check_directory_fuzzer
clang++-16 -fsanitize=undefined -pthread -fsanitize=fuzzer -o
ext2fs_check_directory_fuzzer ext2fs_check_directory_fuzzer.o
../../lib/libsupport.a ../../lib/libe2p.a ../../lib/libext2fs.a
../../lib/libcom_err.a -lpthread
/bin/ld: cannot find -lstdc++: No such file or directory
/bin/ld: cannot find -lstdc++: No such file or directory
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:392: ext2fs_check_directory_fuzzer] Error 1
Now, this works on bookworm, using clang-14. I've also tried using
clang-14 on trixie, and it's failing there too. I'm guessing it's some
kind of missing package, but it's really unclear what the package should
be. I do have libc++16-dev and libc++--dev installed, which is what I
*think* should be the right package to get stdc++, but it's apparently
not being found. Help?
-- System Information:
Debian Release: trixie/sid
APT prefers testing
APT policy: (900, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 6.6.15-amd64 (SMP w/20 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages clang-16 depends on:
ii binutils 2.42-4
ii libc6 2.37-19
ii libc6-dev 2.37-19
ii libclang-common-16-dev 1:16.0.6-26
ii libclang-cpp16t64 1:16.0.6-26
ii libclang1-16t64 1:16.0.6-26
ii libgcc-13-dev 13.2.0-24
ii libllvm16t64 1:16.0.6-26
ii libobjc-13-dev 13.2.0-24
ii libstdc++-13-dev 13.2.0-24
ii libstdc++6 14-20240330-1
ii llvm-16-linker-tools 1:16.0.6-26
Versions of packages clang-16 recommends:
ii llvm-16-dev 1:16.0.6-26
ii python3 3.11.8-1
Versions of packages clang-16 suggests:
pn clang-16-doc <none>
pn wasi-libc <none>
-- no debconf information
