Merge branch 'hb/scanner_bug/OTP-9412' into dev

* hb/scanner_bug/OTP-9412:
  Fix a bug in erl_scan:set_attribute/3

2 files changed, 10 insertions, 1 deletions

diff --git a/lib/stdlib/src/erl_scan.erl b/lib/stdlib/src/erl_scan.erl
index 718ca2e91a..10b2ed2e49 100644
--- a/lib/stdlib/src/erl_scan.erl
+++ b/lib/stdlib/src/erl_scan.erl
@@ -408,7 +408,12 @@ set_attr(line, {Line,Column}, Fun) when ?ALINE(Line), ?COLUMN(Column) ->
     end;
 set_attr(line=Tag, Attrs, Fun) when is_list(Attrs) ->
     {line,Line} = lists:keyfind(Tag, 1, Attrs),
-    lists:keyreplace(Tag, 1, Attrs, {line,Fun(Line)});
+    case lists:keyreplace(Tag, 1, Attrs, {line,Fun(Line)}) of
+        [{line,Ln}] when ?ALINE(Ln) ->
+            Ln;
+        As ->
+            As
+    end;
 set_attr(T1, T2, T3) ->
     erlang:error(badarg, [T1,T2,T3]).
 
diff --git a/lib/stdlib/test/erl_scan_SUITE.erl b/lib/stdlib/test/erl_scan_SUITE.erl
index 31a4f94294..4298b2c701 100644
--- a/lib/stdlib/test/erl_scan_SUITE.erl
+++ b/lib/stdlib/test/erl_scan_SUITE.erl
@@ -737,6 +737,10 @@ set_attribute() ->
         (catch {foo, erl_scan:set_attribute(line, [], F2)}), % type error
     ?line {'EXIT',{badarg,_}} =
         (catch {foo, erl_scan:set_attribute(column, [], F2)}), % type error
+
+    %% OTP-9412
+    ?line 8 = erl_scan:set_attribute(line, [{line,{nos,'X',8}}],
+                                     fun({nos,_V,VL}) -> VL end),
     ok.
 
 column_errors() ->