diff options
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/mir/mod.rs | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/mod.rs b/compiler/rustc_codegen_ssa/src/mir/mod.rs index f6e937a740c..f706ecea975 100644 --- a/compiler/rustc_codegen_ssa/src/mir/mod.rs +++ b/compiler/rustc_codegen_ssa/src/mir/mod.rs @@ -304,7 +304,17 @@ fn arg_local_refs<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>( bug!("spread argument isn't a tuple?!"); }; - let place = PlaceRef::alloca(bx, bx.layout_of(arg_ty)); + let layout = bx.layout_of(arg_ty); + + // FIXME: support unsized params in "rust-call" ABI + if layout.is_unsized() { + span_bug!( + arg_decl.source_info.span, + "\"rust-call\" ABI does not support unsized params", + ); + } + + let place = PlaceRef::alloca(bx, layout); for i in 0..tupled_arg_tys.len() { let arg = &fx.fn_abi.args[idx]; idx += 1; |