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Diffstat (limited to 'compiler/rustc_codegen_ssa/src/mir/block.rs')
-rw-r--r--compiler/rustc_codegen_ssa/src/mir/block.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/block.rs b/compiler/rustc_codegen_ssa/src/mir/block.rs
index c3137f0628e..14fae453bcc 100644
--- a/compiler/rustc_codegen_ssa/src/mir/block.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/block.rs
@@ -1512,7 +1512,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 //   when passed by value, making it larger.
                 let copy_bytes = cmp::min(scratch_size.bytes(), arg.layout.size.bytes());
                 // Allocate some scratch space...
-                let llscratch = bx.alloca(bx.cast_backend_type(cast), scratch_align);
+                let llscratch = bx.alloca(scratch_size, scratch_align);
                 bx.lifetime_start(llscratch, scratch_size);
                 // ...memcpy the value...
                 bx.memcpy(