Package: argon2 Version: 0~20190702+dfsg-4+b1 Severity: wishlist
Hey. I stumbled over some odd issue, originally described here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068849#84 In short: I use the argon2 tool inside the initramfs, into which I copy it via initramfs-tools’ copy_exec function (defined in /usr/share/initramfs-tools/hook-functions). Now that function uses ldd to find out whether a binary is linked against libpthread and if so, also includes libgcc because of #950254 (in short: pthread seems to dlopen() libgcc). Now argon2 somehow doesn't indicate it uses libpthread: $ ldd /usr/bin/argon2 linux-vdso.so.1 (0x00007ffedb996000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f90666bb000) /lib64/ld-linux-x86-64.so.2 (0x00007f90668cb000) which I don't quite understand why. Actually, even when building it manually, an explicitly -lpthread it never shows up there. No idea why... perhaps some linker optimisation that goes wrong? I tried with -Wl,--no-as-needed, but that doesn't help either. I can only force it to link if using gcc … -Wl,--no-as-needed /usr/lib/x86_64-linux-gnu/libpthread.so.0 i.e. the real path of the .so. So in my case, pthread_exit() fails eventually (in the initramfs), with an error that libgcc cannot be found. Any ideas what to do? Thanks, Chris.
