beam_lib: Retain the "Line" chunk when stripping BEAM files

1 files changed, 20 insertions, 1 deletions

diff --git a/lib/stdlib/test/beam_lib_SUITE.erl b/lib/stdlib/test/beam_lib_SUITE.erl
index 4ccc863795..e42dd341c0 100644
--- a/lib/stdlib/test/beam_lib_SUITE.erl
+++ b/lib/stdlib/test/beam_lib_SUITE.erl
@@ -330,6 +330,7 @@ strip(Conf) when is_list(Conf) ->
     ?line {Source2D1, BeamFile2D1} = make_beam(PrivDir, simple2, concat),
     ?line {Source3D1, BeamFile3D1} = make_beam(PrivDir, make_fun, make_fun),
     ?line {Source4D1, BeamFile4D1} = make_beam(PrivDir, constant, constant),
+    ?line {Source5D1, BeamFile5D1} = make_beam(PrivDir, lines, lines),
 
     ?line NoOfTables = length(ets:all()),
     ?line P0 = pps(),
@@ -360,13 +361,25 @@ strip(Conf) when is_list(Conf) ->
     ?line {module, make_fun} = code:load_abs(filename:rootname(BeamFile3D1)),
     ?line {module, constant} = code:load_abs(filename:rootname(BeamFile4D1)),
 
+    %% check that line number information is still present after stripping
+    ?line {module, lines} = code:load_abs(filename:rootname(BeamFile5D1)),
+    ?line {'EXIT',{badarith,[{lines,t,1,Info}|_]}} =
+	(catch lines:t(atom)),
+    ?line true = code:delete(lines),
+    ?line false = code:purge(lines),
+    ?line {ok, {lines,BeamFile5D1}} = beam_lib:strip(BeamFile5D1),
+    ?line {module, lines} = code:load_abs(filename:rootname(BeamFile5D1)),
+    ?line {'EXIT',{badarith,[{lines,t,1,Info}|_]}} =
+	(catch lines:t(atom)),
+
     ?line true = (P0 == pps()),
     ?line NoOfTables = length(ets:all()),
 
     ?line delete_files([SourceD1, BeamFileD1, 
 			Source2D1, BeamFile2D1, 
 			Source3D1, BeamFile3D1,
-			Source4D1, BeamFile4D1]),
+			Source4D1, BeamFile4D1,
+			Source5D1, BeamFile5D1]),
     ok.
 
 
@@ -773,6 +786,12 @@ simple_file(File, Module, constant2) ->
 			"t(A) -> "
 			"    {a,b,[2,3],x,y}. "]),
     ok = file:write_file(File, B);
+simple_file(File, Module, lines) ->
+    B = list_to_binary(["-module(", atom_to_list(Module), ").\n"
+			"-export([t/1]).\n"
+			"t(A) ->\n"
+			"    A+1.\n"]),
+    ok = file:write_file(File, B);
 simple_file(File, Module, F) ->
     B = list_to_binary(["-module(", atom_to_list(Module), "). "
 			"-export([t/0]). "