Bug#1019354: libc6-dev-riscv64-cross: static libc is unusable
Package: libc6-dev-riscv64-cross
Version: 2.34-7cross2
Severity: important
Dear Maintainer,
Even the most trivial C program:
encounters a segmentation crash when linked statically:
# cat << EOF > hello.c
int main(void) { return 0; }
EOF
# riscv64-linux-gnu-gcc -O2 -static hello.c
# qemu-riscv64-static ./a.out
This can be verified both by running the resulting binary under
qemu-riscv64-static or on real RISC-V hardware running the Debian
RISC-V port.
On target hardware, I can get a stack trace in early libc code:
$ gdb ./a.out
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Reading symbols from ./a.out...
(gdb) run
Starting program: /home/remi/a.out
Program received signal SIGSEGV, Segmentation fault.
0x000000000002ce94 in __ctype_init ()
(gdb) bt
#0 0x000000000002ce94 in __ctype_init ()
#1 0x0000000000023d92 in __libc_early_init ()
Backtrace stopped: frame did not save the PC
There are no such problems with dynamic linking (although in that case
qemu-riscv64-static will obviously refuse to work since it can only
deal with static binaries). There are also no such problems whilst
statically linking Debian libc6 natively on RISC-V: this seems to
affect *only* libc6-dev-riscv64-cross.
This was working fine a few months ago. Not sure when did it break.
Best regards,
-- System Information:
Debian Release: bookworm/sid
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1, 'experimental')
merged-usr: no
Architecture: amd64 (x86_64)
Foreign Architectures: i386, arm64
Kernel: Linux 5.18.0-4-amd64 (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to fi_FI.UTF-8), LANGUAGE=fr:en_GB:fi
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages libc6-dev-riscv64-cross depends on:
ii libc6-riscv64-cross 2.34-7cross2
ii linux-libc-dev-riscv64-cross 5.18.16-1cross2
libc6-dev-riscv64-cross recommends no packages.
libc6-dev-riscv64-cross suggests no packages.
-- no debconf information
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