Rust-gpu main fails to build

[simensgreen]

Expected Behaviour

Successful compilation

Example & Steps To Reproduce

1. clone repository https://github.com./simensgreen/rust_gpu_union_issue
2. cargo build

System Info

• Rust: rustc 1.84.0-nightly (b19329a37 2024-11-21)
• OS: MacOS 15.3.2
• GPU: M2 Max

Backtrace

Backtrace

thread 'rustc' panicked at compiler/rustc_middle/src/ty/mod.rs:1676:13:
Box<dyn Any>
stack backtrace:
   0:        0x1129ed7b0 - std::backtrace::Backtrace::create::hf5e5ba1728bb8de7
   1:        0x110844da8 - <alloc[e2e5e8515d00274d]::boxed::Box<rustc_driver_impl[c6ade677a6b0e20c]::install_ice_hook::{closure#0}> as core[924c651d484e1a25]::ops::function::Fn<(&dyn for<'a, 'b> core[924c651d484e1a25]::ops::function::Fn<(&'a std[fc297465fa958267]::panic::PanicHookInfo<'b>,), Output = ()> + core[924c651d484e1a25]::marker::Send + core[924c651d484e1a25]::marker::Sync, &std[fc297465fa958267]::panic::PanicHookInfo)>>::call
   2:        0x110844bb0 - <alloc[e2e5e8515d00274d]::boxed::Box<rustc_driver_impl[c6ade677a6b0e20c]::install_ice_hook::{closure#0}> as core[924c651d484e1a25]::ops::function::Fn<(&dyn for<'a, 'b> core[924c651d484e1a25]::ops::function::Fn<(&'a std[fc297465fa958267]::panic::PanicHookInfo<'b>,), Output = ()> + core[924c651d484e1a25]::marker::Send + core[924c651d484e1a25]::marker::Sync, &std[fc297465fa958267]::panic::PanicHookInfo)>>::call
   3:        0x112a07edc - std::panicking::rust_panic_with_hook::heb73fc7746f92ba7
   4:        0x1108e9718 - std[fc297465fa958267]::panicking::begin_panic::<rustc_errors[caf545eadef7fdd]::ExplicitBug>::{closure#0}
   5:        0x1108e94d0 - std[fc297465fa958267]::sys::backtrace::__rust_end_short_backtrace::<std[fc297465fa958267]::panicking::begin_panic<rustc_errors[caf545eadef7fdd]::ExplicitBug>::{closure#0}, !>
   6:        0x11516c04c - std[fc297465fa958267]::panicking::begin_panic::<rustc_errors[caf545eadef7fdd]::ExplicitBug>
   7:        0x1108efad4 - <rustc_errors[caf545eadef7fdd]::diagnostic::BugAbort as rustc_errors[caf545eadef7fdd]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
   8:        0x111590098 - rustc_middle[dc5a577fd6f5eb51]::util::bug::opt_span_bug_fmt::<rustc_span[60df94d8028129a3]::span_encoding::Span>::{closure#0}
   9:        0x11158eb1c - rustc_middle[dc5a577fd6f5eb51]::ty::context::tls::with_opt::<rustc_middle[dc5a577fd6f5eb51]::util::bug::opt_span_bug_fmt<rustc_span[60df94d8028129a3]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  10:        0x11158eae8 - rustc_middle[dc5a577fd6f5eb51]::ty::context::tls::with_context_opt::<rustc_middle[dc5a577fd6f5eb51]::ty::context::tls::with_opt<rustc_middle[dc5a577fd6f5eb51]::util::bug::opt_span_bug_fmt<rustc_span[60df94d8028129a3]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  11:        0x115218d90 - rustc_middle[dc5a577fd6f5eb51]::util::bug::bug_fmt
  12:        0x11154678c - <rustc_middle[dc5a577fd6f5eb51]::ty::context::TyCtxt>::item_name
  13:        0x10a88e08c - rustc_codegen_spirv::codegen_cx::declare::<impl rustc_codegen_spirv::codegen_cx::CodegenCx>::declare_fn_ext::h62af5aed91b065ab
  14:        0x10a88f6bc - rustc_codegen_spirv::codegen_cx::declare::<impl rustc_codegen_spirv::maybe_pqp_cg_ssa::traits::declare::PreDefineCodegenMethods for rustc_codegen_spirv::codegen_cx::CodegenCx>::predefine_fn::hb68792579dcb451d
  15:        0x10a81f738 - <rustc_middle::mir::mono::MonoItem as rustc_codegen_spirv::maybe_pqp_cg_ssa::mono_item::MonoItemExt>::predefine::h9fc0a1eadbbb089b
  16:        0x10a803d74 - <rustc_codegen_spirv::SpirvCodegenBackend as rustc_codegen_spirv::maybe_pqp_cg_ssa::traits::backend::ExtraBackendMethods>::compile_codegen_unit::{{closure}}::h0debe4e59a7b21f1
  17:        0x10a803820 - <rustc_codegen_spirv::SpirvCodegenBackend as rustc_codegen_spirv::maybe_pqp_cg_ssa::traits::backend::ExtraBackendMethods>::compile_codegen_unit::h1919ebc51166cdfc
  18:        0x10a8a55e0 - rustc_codegen_spirv::maybe_pqp_cg_ssa::base::codegen_crate::hef28e44872569f65
  19:        0x10a8024f8 - <rustc_codegen_spirv::SpirvCodegenBackend as rustc_codegen_spirv::maybe_pqp_cg_ssa::traits::backend::CodegenBackend>::codegen_crate::hffbf186d2f0b9484
  20:        0x1110dbad8 - <rustc_session[3e2f7db2cc04b493]::session::Session>::time::<alloc[e2e5e8515d00274d]::boxed::Box<dyn core[924c651d484e1a25]::any::Any>, rustc_interface[fb6f1569d3f1850c]::passes::start_codegen::{closure#0}>
  21:        0x11120add4 - rustc_interface[fb6f1569d3f1850c]::passes::start_codegen
  22:        0x1111985f0 - <rustc_interface[fb6f1569d3f1850c]::queries::Linker>::codegen_and_build_linker
  23:        0x11082dd20 - <rustc_middle[dc5a577fd6f5eb51]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}::{closure#1}::{closure#7}, core[924c651d484e1a25]::result::Result<core[924c651d484e1a25]::option::Option<rustc_interface[fb6f1569d3f1850c]::queries::Linker>, rustc_span[60df94d8028129a3]::ErrorGuaranteed>>
  24:        0x1107f51b0 - <rustc_interface[fb6f1569d3f1850c]::interface::Compiler>::enter::<rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}::{closure#1}, core[924c651d484e1a25]::result::Result<core[924c651d484e1a25]::option::Option<rustc_interface[fb6f1569d3f1850c]::queries::Linker>, rustc_span[60df94d8028129a3]::ErrorGuaranteed>>
  25:        0x110837588 - rustc_span[60df94d8028129a3]::create_session_globals_then::<core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>, rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_with_globals<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_pool_with_globals<rustc_interface[fb6f1569d3f1850c]::interface::run_compiler<core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>, rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}>::{closure#1}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}::{closure#0}::{closure#0}>
  26:        0x11081f588 - std[fc297465fa958267]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_with_globals<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_pool_with_globals<rustc_interface[fb6f1569d3f1850c]::interface::run_compiler<core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>, rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}>::{closure#1}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>
  27:        0x110822b54 - <<std[fc297465fa958267]::thread::Builder>::spawn_unchecked_<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_with_globals<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_pool_with_globals<rustc_interface[fb6f1569d3f1850c]::interface::run_compiler<core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>, rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}>::{closure#1}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#1} as core[924c651d484e1a25]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  28:        0x112a11fe8 - std::sys::pal::unix::thread::Thread::new::thread_start::h5a3f92a0fdbf8eb0
  29:        0x1978002e4 - __pthread_deallocate


rustc version: 1.84.0-nightly (b19329a37 2024-11-21)
platform: aarch64-apple-darwin

query stack during panic:
end of query stack
thread 'rustc' panicked at compiler/rustc_middle/src/ty/mod.rs:1676:13:
Box<dyn Any>
stack backtrace:
   0:        0x1129ed7b0 - std::backtrace::Backtrace::create::hf5e5ba1728bb8de7
   1:        0x110844da8 - <alloc[e2e5e8515d00274d]::boxed::Box<rustc_driver_impl[c6ade677a6b0e20c]::install_ice_hook::{closure#0}> as core[924c651d484e1a25]::ops::function::Fn<(&dyn for<'a, 'b> core[924c651d484e1a25]::ops::function::Fn<(&'a std[fc297465fa958267]::panic::PanicHookInfo<'b>,), Output = ()> + core[924c651d484e1a25]::marker::Send + core[924c651d484e1a25]::marker::Sync, &std[fc297465fa958267]::panic::PanicHookInfo)>>::call
   2:        0x112a07edc - std::panicking::rust_panic_with_hook::heb73fc7746f92ba7
   3:        0x1108e9718 - std[fc297465fa958267]::panicking::begin_panic::<rustc_errors[caf545eadef7fdd]::ExplicitBug>::{closure#0}
   4:        0x1108e94d0 - std[fc297465fa958267]::sys::backtrace::__rust_end_short_backtrace::<std[fc297465fa958267]::panicking::begin_panic<rustc_errors[caf545eadef7fdd]::ExplicitBug>::{closure#0}, !>
   5:        0x11516c04c - std[fc297465fa958267]::panicking::begin_panic::<rustc_errors[caf545eadef7fdd]::ExplicitBug>
   6:        0x1108efad4 - <rustc_errors[caf545eadef7fdd]::diagnostic::BugAbort as rustc_errors[caf545eadef7fdd]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
   7:        0x111590098 - rustc_middle[dc5a577fd6f5eb51]::util::bug::opt_span_bug_fmt::<rustc_span[60df94d8028129a3]::span_encoding::Span>::{closure#0}
   8:        0x11158eb1c - rustc_middle[dc5a577fd6f5eb51]::ty::context::tls::with_opt::<rustc_middle[dc5a577fd6f5eb51]::util::bug::opt_span_bug_fmt<rustc_span[60df94d8028129a3]::span_encoding::Span>::{closure#0}, !>::{closure#0}
   9:        0x11158eae8 - rustc_middle[dc5a577fd6f5eb51]::ty::context::tls::with_context_opt::<rustc_middle[dc5a577fd6f5eb51]::ty::context::tls::with_opt<rustc_middle[dc5a577fd6f5eb51]::util::bug::opt_span_bug_fmt<rustc_span[60df94d8028129a3]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  10:        0x115218d90 - rustc_middle[dc5a577fd6f5eb51]::util::bug::bug_fmt
  11:        0x11154678c - <rustc_middle[dc5a577fd6f5eb51]::ty::context::TyCtxt>::item_name
  12:        0x10a88e08c - rustc_codegen_spirv::codegen_cx::declare::<impl rustc_codegen_spirv::codegen_cx::CodegenCx>::declare_fn_ext::h62af5aed91b065ab
  13:        0x10a88f6bc - rustc_codegen_spirv::codegen_cx::declare::<impl rustc_codegen_spirv::maybe_pqp_cg_ssa::traits::declare::PreDefineCodegenMethods for rustc_codegen_spirv::codegen_cx::CodegenCx>::predefine_fn::hb68792579dcb451d
  14:        0x10a81f738 - <rustc_middle::mir::mono::MonoItem as rustc_codegen_spirv::maybe_pqp_cg_ssa::mono_item::MonoItemExt>::predefine::h9fc0a1eadbbb089b
  15:        0x10a803d74 - <rustc_codegen_spirv::SpirvCodegenBackend as rustc_codegen_spirv::maybe_pqp_cg_ssa::traits::backend::ExtraBackendMethods>::compile_codegen_unit::{{closure}}::h0debe4e59a7b21f1
  16:        0x10a803820 - <rustc_codegen_spirv::SpirvCodegenBackend as rustc_codegen_spirv::maybe_pqp_cg_ssa::traits::backend::ExtraBackendMethods>::compile_codegen_unit::h1919ebc51166cdfc
  17:        0x10a8a55e0 - rustc_codegen_spirv::maybe_pqp_cg_ssa::base::codegen_crate::hef28e44872569f65
  18:        0x10a8024f8 - <rustc_codegen_spirv::SpirvCodegenBackend as rustc_codegen_spirv::maybe_pqp_cg_ssa::traits::backend::CodegenBackend>::codegen_crate::hffbf186d2f0b9484
  19:        0x1110dbad8 - <rustc_session[3e2f7db2cc04b493]::session::Session>::time::<alloc[e2e5e8515d00274d]::boxed::Box<dyn core[924c651d484e1a25]::any::Any>, rustc_interface[fb6f1569d3f1850c]::passes::start_codegen::{closure#0}>
  20:        0x11120add4 - rustc_interface[fb6f1569d3f1850c]::passes::start_codegen
  21:        0x1111985f0 - <rustc_interface[fb6f1569d3f1850c]::queries::Linker>::codegen_and_build_linker
  22:        0x11082dd20 - <rustc_middle[dc5a577fd6f5eb51]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}::{closure#1}::{closure#7}, core[924c651d484e1a25]::result::Result<core[924c651d484e1a25]::option::Option<rustc_interface[fb6f1569d3f1850c]::queries::Linker>, rustc_span[60df94d8028129a3]::ErrorGuaranteed>>
  23:        0x1107f51b0 - <rustc_interface[fb6f1569d3f1850c]::interface::Compiler>::enter::<rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}::{closure#1}, core[924c651d484e1a25]::result::Result<core[924c651d484e1a25]::option::Option<rustc_interface[fb6f1569d3f1850c]::queries::Linker>, rustc_span[60df94d8028129a3]::ErrorGuaranteed>>
  24:        0x110837588 - rustc_span[60df94d8028129a3]::create_session_globals_then::<core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>, rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_with_globals<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_pool_with_globals<rustc_interface[fb6f1569d3f1850c]::interface::run_compiler<core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>, rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}>::{closure#1}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}::{closure#0}::{closure#0}>
  25:        0x11081f588 - std[fc297465fa958267]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_with_globals<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_pool_with_globals<rustc_interface[fb6f1569d3f1850c]::interface::run_compiler<core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>, rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}>::{closure#1}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>
  26:        0x110822b54 - <<std[fc297465fa958267]::thread::Builder>::spawn_unchecked_<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_with_globals<rustc_interface[fb6f1569d3f1850c]::util::run_in_thread_pool_with_globals<rustc_interface[fb6f1569d3f1850c]::interface::run_compiler<core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>, rustc_driver_impl[c6ade677a6b0e20c]::run_compiler::{closure#0}>::{closure#1}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[924c651d484e1a25]::result::Result<(), rustc_span[60df94d8028129a3]::ErrorGuaranteed>>::{closure#1} as core[924c651d484e1a25]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  27:        0x112a11fe8 - std::sys::pal::unix::thread::Thread::new::thread_start::h5a3f92a0fdbf8eb0
  28:        0x1978002e4 - __pthread_deallocate


query stack during panic:
end of query stack

[LegNeato]

I am getting a panic here:

rust-gpu/crates/rustc_codegen_spirv/src/codegen_cx/declare.rs

Line 174 in 6bbbfe4

"missing libm intrinsic {symbol_name}, which is {instance}"

[LegNeato]

Ok, looks like updating the lockfile causes issues:

https://github.com./Rust-GPU/rust-gpu/actions/runs/14645774261/job/41099428403?pr=243

So it is in one of those.

[LegNeato]

This was probably caused by libm releasing 0.2.13 2 days ago. Can't find the issue right now, will look later if someone hasn't beaten me to it.

[simensgreen]

Yeah, if force libm to 0.2.11 this error disappears. Check out https://github.com./simensgreen/rust_gpu_union_issue/tree/libm-fixed

[LegNeato]

Ok, so something about our symbol resolution when swapping out libm intrinsics is messing up with the new versions.

[LegNeato]

I don't have time to bisect, but a good candidate is rust-lang/compiler-builtins@161036a. My hunch is because these are inlined, we can't replace the symbol because the symbol doesn't exist because they're inlined.