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| author | mejrs <59372212+mejrs@users.noreply.github.com> | 2025-07-08 22:37:12 +0200 |
|---|---|---|
| committer | mejrs <59372212+mejrs@users.noreply.github.com> | 2025-07-08 22:37:12 +0200 |
| commit | 25eb3829e5661ab85067188ca9e6586c29aed6e9 (patch) | |
| tree | 3ccb9a062c06d5e90c134b08b76b32082518b0e6 /compiler/rustc_codegen_ssa/src/mir/mod.rs | |
| parent | 49421d1fa382fba84792e5d5dd7721c1c3e0e46e (diff) | |
| download | rust-25eb3829e5661ab85067188ca9e6586c29aed6e9.tar.gz rust-25eb3829e5661ab85067188ca9e6586c29aed6e9.zip | |
Error on moving unsized values rather than ICE'ing
Diffstat (limited to 'compiler/rustc_codegen_ssa/src/mir/mod.rs')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/mir/mod.rs | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/mod.rs b/compiler/rustc_codegen_ssa/src/mir/mod.rs index 4e35b143173..fa69820d5d2 100644 --- a/compiler/rustc_codegen_ssa/src/mir/mod.rs +++ b/compiler/rustc_codegen_ssa/src/mir/mod.rs @@ -141,7 +141,12 @@ enum LocalRef<'tcx, V> { /// `UnsizedPlace(p)`: `p` itself is a thin pointer (indirect place). /// `*p` is the wide pointer that references the actual unsized place. /// - /// Rust has no alloca and thus no ability to move the unsized place. + /// MIR only supports unsized args, not dynamically-sized locals, so + /// new unsized temps don't exist and we must reuse the referred-to place. + /// + /// FIXME: Since the removal of unsized locals in <https://github.com/rust-lang/rust/pull/142911>, + /// can we maybe use `Place` here? Or refactor it in another way? There are quite a few + /// `UnsizedPlace => bug` branches now. UnsizedPlace(PlaceRef<'tcx, V>), /// The backend [`OperandValue`] has already been generated. Operand(OperandRef<'tcx, V>), |