diff options
| -rw-r--r-- | src/libstd/macros.rs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs index 935102f8355..75f038407c1 100644 --- a/src/libstd/macros.rs +++ b/src/libstd/macros.rs @@ -315,7 +315,9 @@ pub mod builtin { /// /// Two such examples are macros and `#[cfg]` environments. /// - /// Emit better compiler error if a macro is passed invalid values. + /// Emit better compiler error if a macro is passed invalid values. Without the final branch, + /// the compiler would still emit an error, but the error's message would not mention the two + /// valid values. /// /// ```compile_fail /// macro_rules! give_me_foo_or_bar { |