Fix ICE when transmute Assume field is invalid#150707
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compiler/rustc_transmute/src/lib.rs
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| .find(|(_, field_def)| name == field_def.name) | ||
| .unwrap_or_else(|| panic!("There were no fields named `{name}`.")); | ||
| fields[field_idx].to_leaf() == ScalarInt::TRUE | ||
| match fields[field_idx].try_to_scalar() { |
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I think .try_to_leaf() == Some(ScalarInt::TRUE) ought to work
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or ah, you care about seaprating "non value" from false i guess
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i guess try_to_leaf should still work though and remove the Scalar::Int
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Updated to use try_to_leaf() as requested. Thanks for the tip!
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…ce, r=BoxyUwU Fix ICE when transmute Assume field is invalid This PR fixes an internal compiler error in `rustc_transmute` where initializing an `Assume` field (like `alignment`) with a non-scalar constant (like a struct) caused a panic. The fix updates `from_const` to use `try_to_scalar()` instead of assuming the value is always a leaf. It now gracefully returns `None` for invalid types, allowing the compiler to report standard "missing field initialiser" errors instead of crashing. Fixes rust-lang#150506
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…uwer Rollup of 11 pull requests Successful merges: - #144113 (Impls and impl items inherit `dead_code` lint level of the corresponding traits and trait items) - #148339 (naked functions: emit `.private_extern` on macos) - #149880 (rustc_codegen_llvm: update alignment for double on AIX) - #150122 (Refactor function names of `rustc_ast_lowering`) - #150412 (use PIDFD_GET_INFO ioctl when available) - #150670 (THIR pattern building: Move all `thir::Pat` creation into `rustc_mir_build::thir::pattern`) - #150695 (MGCA: pretty printing for struct expressions and tuple calls ) - #150698 (Improve comment clarity in candidate_may_shadow) - #150706 (Update wasm-component-ld) - #150707 (Fix ICE when transmute Assume field is invalid) - #150708 (Enable merge queue in new bors) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup of 11 pull requests Successful merges: - #144113 (Impls and impl items inherit `dead_code` lint level of the corresponding traits and trait items) - #148339 (naked functions: emit `.private_extern` on macos) - #149880 (rustc_codegen_llvm: update alignment for double on AIX) - #150122 (Refactor function names of `rustc_ast_lowering`) - #150412 (use PIDFD_GET_INFO ioctl when available) - #150670 (THIR pattern building: Move all `thir::Pat` creation into `rustc_mir_build::thir::pattern`) - #150695 (MGCA: pretty printing for struct expressions and tuple calls ) - #150698 (Improve comment clarity in candidate_may_shadow) - #150706 (Update wasm-component-ld) - #150707 (Fix ICE when transmute Assume field is invalid) - #150708 (Enable merge queue in new bors) r? `@ghost` `@rustbot` modify labels: rollup
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…uwer Rollup of 10 pull requests Successful merges: - #144113 (Impls and impl items inherit `dead_code` lint level of the corresponding traits and trait items) - #149880 (rustc_codegen_llvm: update alignment for double on AIX) - #150122 (Refactor function names of `rustc_ast_lowering`) - #150412 (use PIDFD_GET_INFO ioctl when available) - #150670 (THIR pattern building: Move all `thir::Pat` creation into `rustc_mir_build::thir::pattern`) - #150695 (MGCA: pretty printing for struct expressions and tuple calls ) - #150698 (Improve comment clarity in candidate_may_shadow) - #150706 (Update wasm-component-ld) - #150707 (Fix ICE when transmute Assume field is invalid) - #150708 (Enable merge queue in new bors) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of #150707 - Delta17920:fix-transmute-valtree-ice, r=BoxyUwU Fix ICE when transmute Assume field is invalid This PR fixes an internal compiler error in `rustc_transmute` where initializing an `Assume` field (like `alignment`) with a non-scalar constant (like a struct) caused a panic. The fix updates `from_const` to use `try_to_scalar()` instead of assuming the value is always a leaf. It now gracefully returns `None` for invalid types, allowing the compiler to report standard "missing field initialiser" errors instead of crashing. Fixes #150506
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This PR fixes an internal compiler error in
rustc_transmutewhere initializing anAssumefield (likealignment) with a non-scalar constant (like a struct) caused a panic.The fix updates
from_constto usetry_to_scalar()instead of assuming the value is always a leaf. It now gracefully returnsNonefor invalid types, allowing the compiler to report standard "missing field initialiser" errors instead of crashing.Fixes #150506