Bug#996752: clang-13: -static-pie AND -fuse-ld=lld produce unusable a.out

[Sylvestre Ledru]

Hello

It seems an upstream issue, not a packaging issue.
Could you please report this bug upstream?


Thanks
Sylvestre

Le 18/10/2021 à 09:39, Ryutaroh Matsumoto a écrit :
> Package: clang-13
> Version: 1:13.0.0-5
> Severity: normal
> X-Debbugs-Cc: 996659 at bugs.debian.org
> 
> Dear Maintainer,
> 
> The following transcript should be self-explanatory.
> gcc-11 also procudes unusable a.out with -static-pie as
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=996659
> 
> This issue could be a duplicate of #996659
> but I am unsure.
> This could also be an issue of lld-13 instead of clang-13...
> 
> $ clang-13 -g -static-pie -fPIE hello.c
> $ ./a.out
> hello world!
> $ clang-13 -g -fuse-ld=lld -static-pie -fPIE hello.c
> $ ./a.out
> Segmentation fault
> $ ldd a.out
> 	statically linked
> $ gdb a.out
> GNU gdb (Debian 10.1-2) 10.1.90.20210103-git
> Reading symbols from a.out...
> (gdb) run
> Starting program: /home/ryutaroh/clang-test/a.out
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000fffff7fd8210 in _dl_relocate_static_pie ()
> (gdb) info stack
> #0  0x0000fffff7fd8210 in _dl_relocate_static_pie ()
> #1  0x0000fffff7f8663c in __libc_start_main ()
> #2  0x0000fffff7f864b8 in _start ()
> (gdb) info local
> No symbol table info available.
> (gdb) quit
> A debugging session is active.
> 
> 	Inferior 1 [process 530049] will be killed.
> 
> Quit anyway? (y or n) y
> 
> Best regards, Ryutaroh Matsumoto
> 
> -- System Information:
> Debian Release: bookworm/sid
>    APT prefers testing
>    APT policy: (990, 'testing'), (500, 'stable-updates'), (500, 'stable-security'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
> Architecture: arm64 (aarch64)
> 
> Kernel: Linux 5.14.12-clang13 (SMP w/4 CPU threads; PREEMPT)
> Kernel taint flags: TAINT_WARN, TAINT_CRAP
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled
> 
> Versions of packages clang-13 depends on:
> ii  binutils                2.37-7
> ii  libc6                   2.32-4
> ii  libc6-dev               2.32-4
> ii  libclang-common-13-dev  1:13.0.0-5
> ii  libclang-cpp13          1:13.0.0-5
> ii  libclang1-13            1:13.0.0-5
> ii  libgcc-11-dev           11.2.0-9
> ii  libgcc-s1               11.2.0-9
> ii  libllvm13               1:13.0.0-5
> ii  libobjc-11-dev          11.2.0-9
> ii  libstdc++-11-dev        11.2.0-9
> ii  libstdc++6              11.2.0-9
> 
> Versions of packages clang-13 recommends:
> ii  llvm-13-dev  1:13.0.0-5
> ii  python3      3.9.2-3
> 
> Versions of packages clang-13 suggests:
> pn  clang-13-doc  <none>
> 
> -- no debconf information
> 
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