ICE: thread 'rustc' panicked at 'cannot use the #[rustc_if_this_changed] or #[rustc_then_this_would_need] annotations without supplying -Z query-dep-graph', compiler/rustc_incremental/src/assert_dep_graph.rs:77:13

[chengniansun]

Code

#![feature(rustc_attrs)]
#![rustc_if_this_changed]

Meta

rustc --version --verbose:

rustc 1.48.0-nightly (7f7a1cbfd 2020-09-27)
binary: rustc
commit-hash: 7f7a1cbfd3b55daee191247770627afab09eece2
commit-date: 2020-09-27
host: x86_64-unknown-linux-gnu
release: 1.48.0-nightly
LLVM version: 11.0

Error output

thread 'rustc' panicked at 'cannot use the `#[rustc_if_this_changed]` or `#[rustc_then_this_would_need]` annotations without supplying `-Z query-dep-graph`', compiler/rustc_incremental/src/assert_dep_graph.rs:77:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.48.0-nightly (7f7a1cbfd 2020-09-27) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type staticlib

thread '<unnamed>' panicked at 'assertion failed: `(left == right)`
  left: `LLVMing`,
 right: `Codegenning`', /rustc/7f7a1cbfd3b55daee191247770627afab09eece2/compiler/rustc_codegen_ssa/src/back/write.rs:1435:21

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.48.0-nightly (7f7a1cbfd 2020-09-27) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type staticlib

Backtrace

thread 'rustc' panicked at 'cannot use the `#[rustc_if_this_changed]` or `#[rustc_then_this_would_need]` annotations without supplying `-Z query-dep-graph`', compiler/rustc_incremental/src/assert_dep_graph.rs:77:13
stack backtrace:
   0: rust_begin_unwind
             at /rustc/7f7a1cbfd3b55daee191247770627afab09eece2/library/std/src/panicking.rs:483
   1: std::panicking::begin_panic_fmt
             at /rustc/7f7a1cbfd3b55daee191247770627afab09eece2/library/std/src/panicking.rs:437
   2: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
   3: rustc_incremental::assert_dep_graph::assert_dep_graph
   4: rustc_session::utils::<impl rustc_session::session::Session>::time
   5: rustc_codegen_ssa::base::finalize_tcx
   6: rustc_codegen_ssa::base::codegen_crate
   7: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate
   8: rustc_interface::passes::QueryContext::enter
   9: rustc_interface::queries::Queries::ongoing_codegen
  10: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  11: rustc_span::with_source_map
  12: rustc_interface::interface::create_compiler_and_run
  13: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.48.0-nightly (7f7a1cbfd 2020-09-27) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type staticlib

query stack during panic:
end of query stack

NOTE: The bug is found by our work-in-progress compiler testing tool Kira, and the test program is reduced/minimized by Perses

[jonas-schievink]

This seems like intended behavior, no?

[chengniansun]

An error might be better here than a crash. If I remove --crate-type staticlib, the crash goes away but an error is still emitted.

[jonas-schievink]

Ah yeah the second assertion failure looks odd

[camelid]

Labeling as P-low because it's incorrect code anyway.

[JohnTitor]

Triage: Fixed by #83313 and that PR includes the regression test, closing.