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authorbors <bors@rust-lang.org>2025-07-11 05:27:32 +0000
committerbors <bors@rust-lang.org>2025-07-11 05:27:32 +0000
commit855e0fe46e68d94e9f6147531b75ac2d488c548e (patch)
treee7d73ebfdb909118cf6e79acac8a64a6f414f54b /compiler/rustc_middle/src
parentcdac44e608c3df9a241e0a1b53b3f62af250dbf1 (diff)
parent25eb3829e5661ab85067188ca9e6586c29aed6e9 (diff)
downloadrust-855e0fe46e68d94e9f6147531b75ac2d488c548e.tar.gz
rust-855e0fe46e68d94e9f6147531b75ac2d488c548e.zip
Auto merge of #142911 - mejrs:unsized, r=compiler-errors
Remove support for dynamic allocas

Followup to rust-lang/rust#141811
Diffstat (limited to 'compiler/rustc_middle/src')
-rw-r--r--compiler/rustc_middle/src/traits/mod.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/traits/mod.rs b/compiler/rustc_middle/src/traits/mod.rs
index 1a5a9765ce7..5bdde3a514e 100644
--- a/compiler/rustc_middle/src/traits/mod.rs
+++ b/compiler/rustc_middle/src/traits/mod.rs
@@ -412,6 +412,10 @@ pub enum ObligationCauseCode<'tcx> {
 
     /// Obligations emitted during the normalization of a free type alias.
     TypeAlias(ObligationCauseCodeHandle<'tcx>, Span, DefId),
+
+    /// Only reachable if the `unsized_fn_params` feature is used. Unsized function arguments must
+    /// be place expressions because we can't store them in MIR locals as temporaries.
+    UnsizedNonPlaceExpr(Span),
 }
 
 /// Whether a value can be extracted into a const.