Your message dated Fri, 17 Feb 2023 20:40:45 +0100
with message-id <[email protected]>
and subject line closing 1028629
has caused the Debian Bug report #1028629,
regarding rustc: (some) atomic intrinsics on armel broken
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [email protected]
immediately.)
--
1028629: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1028629
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: rustc
Version: 1.63.0+dfsg1-1
Severity: important
X-Debbugs-Cc: [email protected]
rustc fails to (successfully) link crates using parts of
std::sync::atomic, e.g. the following code in (lib) crate bar:
------8<-----
use std::sync::atomic::AtomicU32;
use std::sync::atomic::Ordering;
pub fn max(left: AtomicU32, right: u32) -> u32 {
left.fetch_max(right, Ordering::SeqCst)
}
------>8-----
and the following code in (bin) crate foo:
------8<-----
use std::sync::atomic::AtomicU32;
use bar;
fn main() {
println!("{}", bar::max(AtomicU32::new(7), 5));
}
------>8-----
will lead to the following linking error on armel:
------8<-----
# cargo run --release
Compiling foo v0.1.0 (/build/test/foo)
error: linking with `cc` failed: exit status: 12: foo(bin)
|
= note: "cc" "/tmp/rustcTFx4i9/symbols.o"
"/build/test/foo/target/release/deps/foo-59f27b1de92f2acd.foo.1afac17f-cgu.0.rcgu.o"
"/build/test/foo/target/release/deps/foo-59f27b1de92f2acd.foo.1afac17f-cgu.1.rcgu.o"
"/build/test/foo/target/release/deps/foo-59f27b1de92f2acd.foo.1afac17f-cgu.2.rcgu.o"
"/build/test/foo/target/release/deps/foo-59f27b1de92f2acd.20wjxsqwz98t4wkq.rcgu.o"
"-Wl,--as-needed" "-L" "/build/test/foo/target/release/deps" "-L"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib" "-Wl,-Bstatic"
"/build/test/foo/target/release/deps/libbar-7fb8e41530f4ad06.rlib"
"-Wl,--start-group"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libstd-6a651d83c44843bb.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libpanic_unwind-98224a094117fb61.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libobject-6353760ce6c6ab47.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libmemchr-b7d0d45279218739.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libaddr2line-eda5e1e22d9f768c.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libgimli-f2321664649c6488.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/librustc_demangle-1882c2f330ea3722.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libstd_detect-1e9ab0673b70075d.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libhashbrown-a18bf1b0b60baadc.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libminiz_oxide-eb7e10deb950ff71.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libadler-ebe0d9eb71624a17.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/librustc_std_workspace_alloc-d0b17dce6de8f743.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libunwind-b85b839502ab2b62.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libcfg_if-2adecf55c5fb13fa.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/liblibc-3cb92b5edcc2e566.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/liballoc-657f47a57064518b.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/librustc_std_workspace_core-bc3b35b3d32be632.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libcore-c809391b20961e50.rlib"
"-Wl,--end-group"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libcompiler_builtins-bc99d51bba3f7a8e.rlib"
"-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
"-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib" "-o"
"/build/test/foo/target/release/deps/foo-59f27b1de92f2acd" "-Wl,--gc-sections"
"-pie" "-Wl,-zrelro,-znow" "-Wl,-O1" "-nodefaultlibs"
= note: /usr/bin/ld:
/build/test/foo/target/release/deps/libbar-7fb8e41530f4ad06.rlib(bar-7fb8e41530f4ad06.bar.b0a8f44d-cgu.0.rcgu.o):
in function `bar::add':
bar.b0a8f44d-cgu.0:(.text._ZN3bar3add17hce88dc9d839331b9E+0x24):
undefined reference to `__sync_fetch_and_umax_4'
collect2: error: ld returned 1 exit status
= help: some `extern` functions couldn't be found; some native libraries may
need to be installed or have their path specified
= note: use the `-l` flag to specify native libraries to link
= note: use the `cargo:rustc-link-lib` directive to specify the native
libraries to link with Cargo (see
https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
error: could not compile `foo` due to previous error
(debian-test-armel-sbuild)root@zen:/build/test/foo# cargo clean
(debian-test-armel-sbuild)root@zen:/build/test/foo# cargo run
Compiling bar v0.1.0 (/build/test/bar)
Compiling foo v0.1.0 (/build/test/foo) ] 0/2: bar
error: linking with `cc` failed: exit status: 12: foo(bin)
|
= note: "cc" "/tmp/rustckvzoGP/symbols.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.2e9m1dxvxhlpjv6f.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.2kv2r3chzehpy591.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.2w6od5db0a6s353m.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.35evzsnqbqvn39ld.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.3yygjnxroz9tmefv.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.48oa1oyzhlw2s0yn.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.4yrs2bs7ga5tcxkm.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.50n9myic4x4ni1vl.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.59pg060x0csuwdni.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.5dyoc2mxjoyzc19o.rcgu.o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8.3c7gfoqt6aheh1qz.rcgu.o"
"-Wl,--as-needed" "-L" "/build/test/foo/target/debug/deps" "-L"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib" "-Wl,-Bstatic"
"/build/test/foo/target/debug/deps/libbar-9c3d467fdf627c5e.rlib"
"-Wl,--start-group"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libstd-6a651d83c44843bb.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libpanic_unwind-98224a094117fb61.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libobject-6353760ce6c6ab47.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libmemchr-b7d0d45279218739.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libaddr2line-eda5e1e22d9f768c.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libgimli-f2321664649c6488.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/librustc_demangle-1882c2f330ea3722.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libstd_detect-1e9ab0673b70075d.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libhashbrown-a18bf1b0b60baadc.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libminiz_oxide-eb7e10deb950ff71.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libadler-ebe0d9eb71624a17.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/librustc_std_workspace_alloc-d0b17dce6de8f743.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libunwind-b85b839502ab2b62.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libcfg_if-2adecf55c5fb13fa.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/liblibc-3cb92b5edcc2e566.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/liballoc-657f47a57064518b.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/librustc_std_workspace_core-bc3b35b3d32be632.rlib"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libcore-c809391b20961e50.rlib"
"-Wl,--end-group"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib/libcompiler_builtins-bc99d51bba3f7a8e.rlib"
"-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
"-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L"
"/usr/lib/rustlib/armv5te-unknown-linux-gnueabi/lib" "-o"
"/build/test/foo/target/debug/deps/foo-f1598fa86eee5ab8" "-Wl,--gc-sections"
"-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
= note: /usr/bin/ld:
/build/test/foo/target/debug/deps/libbar-9c3d467fdf627c5e.rlib(bar-9c3d467fdf627c5e.fpbiq7drr8wt5kg.rcgu.o):
in function `core::sync::atomic::atomic_umax':
/usr/src/rustc-1.63.0/library/core/src/sync/atomic.rs:2808: undefined
reference to `__sync_fetch_and_umax_4'
/usr/bin/ld:
/usr/src/rustc-1.63.0/library/core/src/sync/atomic.rs:2806: undefined reference
to `__sync_fetch_and_umax_4'
/usr/bin/ld:
/usr/src/rustc-1.63.0/library/core/src/sync/atomic.rs:2805: undefined reference
to `__sync_fetch_and_umax_4'
/usr/bin/ld:
/usr/src/rustc-1.63.0/library/core/src/sync/atomic.rs:2807: undefined reference
to `__sync_fetch_and_umax_4'
/usr/bin/ld:
/usr/src/rustc-1.63.0/library/core/src/sync/atomic.rs:2809: undefined reference
to `__sync_fetch_and_umax_4'
collect2: error: ld returned 1 exit status
= help: some `extern` functions couldn't be found; some native libraries may
need to be installed or have their path specified
= note: use the `-l` flag to specify native libraries to link
= note: use the `cargo:rustc-link-lib` directive to specify the native
libraries to link with Cargo (see
https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
error: could not compile `foo` due to previous error
----->8-----
this is just a sample, there are other parts of the atomic module that
work, and other parts that also don't.
the same issue is also found in rust-portable-atomic's autopkgtest on armel:
https://ci.debian.net/data/autopkgtest/testing/armel/r/rust-portable-atomic/30099189/log.gz
as well as in rustc 1.64.0+dfsg1-1~exp1 (failed) build attempt on armel:
https://buildd.debian.org/status/fetch.php?pkg=rustc&arch=armel&ver=1.64.0%2Bdfsg1-1%7Eexp1&stamp=1671720801&raw=0
I am fairly certain the following two commits (part of 1.64.0+dfsg1-1~exp2) fix
the issue:
https://salsa.debian.org/rust-team/rust/-/commit/9d0c1f2042b4eba728e84d97245227e0121f1b1c
https://salsa.debian.org/rust-team/rust/-/commit/af9e9923ea3d0a8a7fa9c48d369c0c09445b8656
just disabling the hacky workaround or adding either of the two
compiler_builtins cherry-picks still lead to the rustc build failing,
but the current version in experimental not only built fine on armel, it
also runs both the linked rust-portable-atomic autopkgtest and the
minimal reproducer in this bug successfully on armel.
-- System Information:
Debian Release: bookworm/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 6.1.0-1-amd64 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
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 rustc depends on:
ii binutils 2.39.90.20230110-1
ii gcc 4:12.2.0-3
ii libc6 2.36-8
ii libc6-dev [libc-dev] 2.36-8
ii libgcc-s1 12.2.0-14
ii libstd-rust-dev 1.63.0+dfsg1-1
Versions of packages rustc recommends:
ii cargo 0.66.0+ds1-1
ii llvm-14 1:14.0.6-10+b1
Versions of packages rustc suggests:
ii clang-14 1:14.0.6-10+b1
pn lld-14 <none>
-- no debconf information
--- End Message ---
--- Begin Message ---
Version: 1.64.0+dfsg1-1~exp2
Version: 1.63.0+dsfg1-2
--- End Message ---
