Fix false-positive debug_assert

clippy_lints/src/panic_in_result_fn.rs

@@ -1,6 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::ty::is_type_diagnostic_item;
-use clippy_utils::{find_macro_calls, return_ty};
+use clippy_utils::{find_macro_calls, is_expn_of, return_ty};
 use rustc_hir as hir;
 use rustc_hir::intravisit::FnKind;
 use rustc_lint::{LateContext, LateLintPass};
@@ -52,7 +52,7 @@ impl<'tcx> LateLintPass<'tcx> for PanicInResultFn {
 }
 
 fn lint_impl_body<'tcx>(cx: &LateContext<'tcx>, impl_span: Span, body: &'tcx hir::Body<'tcx>) {
- let panics = find_macro_calls(
+ let mut panics = find_macro_calls(
  &[
  "unimplemented",
  "unreachable",
@@ -64,6 +64,7 @@ fn lint_impl_body<'tcx>(cx: &LateContext<'tcx>, impl_span: Span, body: &'tcx hir
  ],
  body,
  );
+ panics.retain(|span| is_expn_of(*span, "debug_assert").is_none());
  if !panics.is_empty() {
  span_lint_and_then(
  cx,