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Support allocation failures when interperting MIR

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Note that this breaks Miri.

Closes #79601
This commit is contained in:
Smitty 2021-06-12 19:49:48 -04:00
parent b186f8605a
commit 6048adc8b1
1 changed files with 4 additions and 1 deletions
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5
src/vtable.rs
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@ -72,7 +72,10 @@ pub(crate) fn get_vtable<'tcx>(
let vtable_ptr = if let Some(vtable_ptr) = fx.vtables.get(&(ty, trait_ref)) {
*vtable_ptr
} else {
let vtable_alloc_id = fx.tcx.vtable_allocation(ty, trait_ref);
let vtable_alloc_id = match fx.tcx.vtable_allocation(ty, trait_ref) {
Ok(alloc) => alloc,
Err(_) => fx.tcx.sess().fatal("allocation of constant vtable failed"),
};
let vtable_allocation = fx.tcx.global_alloc(vtable_alloc_id).unwrap_memory();
let vtable_ptr = pointer_for_allocation(fx, vtable_allocation);