Rollup merge of #69960 - RalfJung:abort, r=oli-obk
miri engine: fix treatment of abort intrinsic I screwed up in https://github.com/rust-lang/rust/pull/69830 and added `abort` to the wrong block of intrinsics, namely the one that actually has a return place. So that branch was never actually reached. r? @oli-obk
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f2af2cff0f
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@ -84,14 +84,15 @@ impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
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let substs = instance.substs;
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let intrinsic_name = self.tcx.item_name(instance.def_id());
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// We currently do not handle any intrinsics that are *allowed* to diverge,
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// but `transmute` could lack a return place in case of UB.
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// First handle intrinsics without return place.
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let (dest, ret) = match ret {
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Some(p) => p,
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None => match intrinsic_name {
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sym::transmute => throw_ub!(Unreachable),
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sym::transmute => throw_ub_format!("transmuting to uninhabited type"),
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sym::abort => M::abort(self)?,
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// Unsupported diverging intrinsic.
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_ => return Ok(false),
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},
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Some(p) => p,
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};
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// Keep the patterns in this match ordered the same as the list in
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@ -103,10 +104,6 @@ impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
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self.write_scalar(location.ptr, dest)?;
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}
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sym::abort => {
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M::abort(self)?;
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}
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sym::min_align_of
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| sym::pref_align_of
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| sym::needs_drop
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@ -4,7 +4,7 @@ warning: any use of this value will cause an error
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LL | unsafe { std::mem::transmute(()) }
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| ^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| entering unreachable code
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| transmuting to uninhabited type
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| inside call to `foo` at $DIR/validate_uninhabited_zsts.rs:14:26
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...
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LL | const FOO: [Empty; 3] = [foo(); 3];
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