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Clearer error message for dead assign

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This commit is contained in:
John Ginger 2018-12-02 15:40:24 +00:00
parent 9abc231212
commit eaeebb55e1
1 changed files with 2 additions and 2 deletions
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4
src/librustc/middle/liveness.rs
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@ -1658,10 +1658,10 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> {
if let Some(name) = self.should_warn(var) {
if is_argument {
self.ir.tcx.lint_hir(lint::builtin::UNUSED_ASSIGNMENTS, hir_id, sp,
&format!("value passed to `{}` is never read", name));
&format!("value passed to `{}` is never read (maybe it is overwritten before being read)", name));
} else {
self.ir.tcx.lint_hir(lint::builtin::UNUSED_ASSIGNMENTS, hir_id, sp,
&format!("value assigned to `{}` is never read", name));
&format!("value assigned to `{}` is never read (maybe it is overwritten before being read)", name));
}
}
}