diff options
| -rw-r--r-- | compiler/rustc_middle/src/ty/query/mod.rs | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/compiler/rustc_middle/src/ty/query/mod.rs b/compiler/rustc_middle/src/ty/query/mod.rs index 48e777f7158..c170858ba85 100644 --- a/compiler/rustc_middle/src/ty/query/mod.rs +++ b/compiler/rustc_middle/src/ty/query/mod.rs @@ -217,8 +217,11 @@ macro_rules! define_callbacks { fn default() -> Self { Providers { $($name: |_, key| bug!( - "`tcx.{}({:?})` unsupported by its crate", - stringify!($name), key + "`tcx.{}({:?})` unsupported by its crate; \ + perhaps the `{}` query was never assigned a provider function", + stringify!($name), + key, + stringify!($name), ),)* } } |