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Improve error for when query is unsupported by crate #101958

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merged 2 commits into from
Sep 20, 2022
Merged

Improve error for when query is unsupported by crate #101958

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dddfb7d
Improve error message for unsupported crate
hanar3 Sep 14, 2022
0405a5d
improve error message for when a query isn't supported
hanar3 Sep 17, 2022
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5 changes: 3 additions & 2 deletions compiler/rustc_middle/src/ty/query.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -275,8 +275,9 @@ macro_rules! define_callbacks {
fn default() -> Self {
Providers {
$($name: |_, key| bug!(
"`tcx.{}({:?})` unsupported by its crate; \
perhaps the `{}` query was never assigned a provider function",
"`tcx.{}({:?})` is not supported for external or local crate;\n
hint: Queries can be either made to the local crate, or the external crate. This error means you tried to use it for one that's not supported (likely the local crate).\n
If that's not the case, {} was likely never assigned to a provider function.\n",
stringify!($name),
key,
stringify!($name),
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