fix: don't warn double-negations when it jumps macro boundary

anatawa12 · anatawa12 · commit 05c48a3fb0e1 · 2025-07-16T15:58:00.000+09:00
diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs
@@ -1584,6 +1584,8 @@ impl EarlyLintPass for DoubleNegations {
         if let ExprKind::Unary(UnOp::Neg, ref inner) = expr.kind
             && let ExprKind::Unary(UnOp::Neg, ref inner2) = inner.kind
             && !matches!(inner2.kind, ExprKind::Unary(UnOp::Neg, _))
+            // Don't lint if this jumps macro expansion boundary (Issue #143980)
+            && expr.span.eq_ctxt(inner.span)
         {
             cx.emit_span_lint(
                 DOUBLE_NEGATIONS,

Original file line number	Diff line number	Diff line change
`@@ -1584,6 +1584,8 @@ impl EarlyLintPass for DoubleNegations {`
`1584`	`1584`	`if let ExprKind::Unary(UnOp::Neg, ref inner) = expr.kind`
`1585`	`1585`	`&& let ExprKind::Unary(UnOp::Neg, ref inner2) = inner.kind`
`1586`	`1586`	`&& !matches!(inner2.kind, ExprKind::Unary(UnOp::Neg, _))`
	`1587`	`+ // Don't lint if this jumps macro expansion boundary (Issue #143980)`
	`1588`	`+ && expr.span.eq_ctxt(inner.span)`
`1587`	`1589`	`{`
`1588`	`1590`	`cx.emit_span_lint(`
`1589`	`1591`	`DOUBLE_NEGATIONS,`