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`-Ztreat-err-as-bug` treats normal errors and delayed bugs equally,
which can lead to some really surprising results.
This commit changes `-Ztreat-err-as-bug` so it ignores delayed bugs,
unless they get promoted to proper bugs and are printed.
This feels to me much simpler and more logical. And it simplifies the
implementation:
- The `-Ztreat-err-as-bug` check is removed from in
`DiagCtxt::{delayed_bug,span_delayed_bug}`.
- `treat_err_as_bug` doesn't need to count delayed bugs.
- The `-Ztreat-err-as-bug` panic message is simpler, because it doesn't
have to mention delayed bugs.
Output of delayed bugs is now more consistent. They're always printed
the same way. Previously when they triggered `-Ztreat-err-as-bug` they
would be printed slightly differently, via `span_bug` in
`span_delayed_bug` or `delayed_bug`.
A minor behaviour change: the "no errors encountered even though
`span_delayed_bug` issued" printed before delayed bugs is now a note
rather than a bug. This is done so it doesn't get counted as an error
that might trigger `-Ztreat-err-as-bug`, which would be silly.
This means that if you use `-Ztreat-err-as-bug=1` and there are no
normal errors but there are delayed bugs, the first delayed bug will be
shown (and the panic will happen after it's printed).
Also, I have added a second note saying "those delayed bugs will now be
shown as internal compiler errors". I think this makes it clearer what
is happening, because the whole concept of delayed bugs is non-obvious.
There are some test changes.
- equality-in-canonical-query.rs: Minor output changes, and the error
count reduces by one because the "no errors encountered even though
`span_delayed_bug` issued" message is no longer counted as an error.
- rpit_tait_equality_in_canonical_query.rs: Ditto.
- storage-live.rs: The query stack disappears because these delayed bugs
are now printed at the end, rather than when they are created.
- storage-return.rs, span_delayed_bug.rs: now need
`-Zeagerly-emit-delayed-bugs` because they need the delayed bugs
emitted immediately to preserve behaviour.
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| .. | ||
| alignment | ||
| auxiliary | ||
| lint | ||
| mir-inlining | ||
| validate | ||
| build-async-error-body-correctly.rs | ||
| build-async-error-body-correctly.stderr | ||
| checks_without_panic_impl.rs | ||
| debug-ref-undef.rs | ||
| drop-elaboration-after-borrowck-error.rs | ||
| drop-elaboration-after-borrowck-error.stderr | ||
| field-projection-invariant.rs | ||
| field-projection-mutating-context2.rs | ||
| field-projection-mutating-context2.stderr | ||
| field-projection-mutating-context.rs | ||
| field-projection-mutating-context.stderr | ||
| field-ty-ascription-enums.rs | ||
| field-ty-ascription.rs | ||
| important-higher-ranked-regions.rs | ||
| issue66339.rs | ||
| issue-29227.rs | ||
| issue-46845.rs | ||
| issue-60390.rs | ||
| issue-66851.rs | ||
| issue-66930.rs | ||
| issue-67639-normalization-ice.rs | ||
| issue-67710-inline-projection.rs | ||
| issue-67947.rs | ||
| issue-67947.stderr | ||
| issue-68841.rs | ||
| issue-71793-inline-args-storage.rs | ||
| issue-73914.rs | ||
| issue-74739.rs | ||
| issue-75053.rs | ||
| issue-75053.stderr | ||
| issue-75419-validation-impl-trait.rs | ||
| issue-76248.rs | ||
| issue-76375.rs | ||
| issue-76740-copy-propagation.rs | ||
| issue-76803-branches-not-same.rs | ||
| issue-77002.rs | ||
| issue-77359-simplify-arm-identity.rs | ||
| issue-77911.rs | ||
| issue-78496.rs | ||
| issue-80949.rs | ||
| issue-83499-input-output-iteration-ice.rs | ||
| issue-83499-input-output-iteration-ice.stderr | ||
| issue-89485.rs | ||
| issue-91745.rs | ||
| issue-92893.rs | ||
| issue-92893.stderr | ||
| issue-99852.rs | ||
| issue-99866.rs | ||
| issue-101844.rs | ||
| issue-102389.rs | ||
| issue-102389.stderr | ||
| issue-105809.rs | ||
| issue-106062.rs | ||
| issue-106062.stderr | ||
| issue-107678-projection-with-lifetime.rs | ||
| issue-107691.rs | ||
| issue-109004-drop-large-array.rs | ||
| issue-109743.rs | ||
| issue-112269.rs | ||
| issue-112269.stderr | ||
| mir_adt_construction.rs | ||
| mir_ascription_coercion.rs | ||
| mir_assign_eval_order.rs | ||
| mir_augmented_assignments.rs | ||
| mir_autoderef.rs | ||
| mir_build_match_comparisons.rs | ||
| mir_call_with_associated_type.rs | ||
| mir_calls_to_shims.rs | ||
| mir_cast_fn_ret.rs | ||
| mir_codegen_array_2.rs | ||
| mir_codegen_array.rs | ||
| mir_codegen_call_converging.rs | ||
| mir_codegen_calls_converging_drops_2.rs | ||
| mir_codegen_calls_converging_drops.rs | ||
| mir_codegen_calls_diverging_drops.rs | ||
| mir_codegen_calls_diverging.rs | ||
| mir_codegen_calls.rs | ||
| mir_codegen_critical_edge.rs | ||
| mir_codegen_spike1.rs | ||
| mir_codegen_ssa.rs | ||
| mir_codegen_switch.rs | ||
| mir_codegen_switchint.rs | ||
| mir_coercion_casts.rs | ||
| mir_coercions.rs | ||
| mir_const_prop_identity.rs | ||
| mir_const_prop_tuple_field_reorder.rs | ||
| mir_constval_adts.rs | ||
| mir_detects_invalid_ops.rs | ||
| mir_detects_invalid_ops.stderr | ||
| mir_drop_order.rs | ||
| mir_drop_panics.rs | ||
| mir_dynamic_drops_1.rs | ||
| mir_dynamic_drops_2.rs | ||
| mir_dynamic_drops_3.rs | ||
| mir_early_return_scope.rs | ||
| mir_fat_ptr_drop.rs | ||
| mir_fat_ptr.rs | ||
| mir_heavy_promoted.rs | ||
| mir_indexing_oob_1.rs | ||
| mir_indexing_oob_2.rs | ||
| mir_indexing_oob_3.rs | ||
| mir_let_chains_drop_order.rs | ||
| mir_match_arm_guard.rs | ||
| mir_match_test.rs | ||
| mir_misc_casts.rs | ||
| mir_overflow_off.rs | ||
| mir_raw_fat_ptr.rs | ||
| mir_refs_correct.rs | ||
| mir_small_agg_arg.rs | ||
| mir_static_subtype.rs | ||
| mir_struct_with_assoc_ty.rs | ||
| mir_temp_promotions.rs | ||
| mir_void_return_2.rs | ||
| mir_void_return.rs | ||
| mir-typeck-normalize-fn-sig.rs | ||
| remove-zsts-query-cycle.rs | ||
| simplify-branch-same.rs | ||
| ssa_call_ret.rs | ||
| ssa-analysis-regression-50041.rs | ||
| thir-constparam-temp.rs | ||
| thir-constparam-temp.stderr | ||
| unsize-trait.rs | ||