emulator: Add a fourth element in exception stacktraces

This commit is a preparation for introducing location information
(filename/line number) in stacktraces in exceptions. Currently
a stack trace looks like:

  [{Mod1,Function1,Arity1},
   .
   .
   .
   {ModN,FunctionN,ArityN}]

Add a forth element to each tuple that can be used indication
the filename and line number of the source file:

  [{Mod1,Function1,Arity1,Location1},
   .
   .
   .
   {ModN,FunctionN,ArityN,LocationN}]

In this commit, the fourth element will just be an empty list,
and we will change all code that look at or manipulate stacktraces.

2 files changed, 3 insertions, 3 deletions

diff --git a/lib/debugger/test/int_eval_SUITE_data/my_int_eval_module.erl b/lib/debugger/test/int_eval_SUITE_data/my_int_eval_module.erl
index 997ee6e17d..90f83e80e8 100644
--- a/lib/debugger/test/int_eval_SUITE_data/my_int_eval_module.erl
+++ b/lib/debugger/test/int_eval_SUITE_data/my_int_eval_module.erl
@@ -117,7 +117,7 @@ more_nocatch(Fun) ->
 %% External calls.
 
 external_call_test(Data) ->
-    {'EXIT',{undef,[{?MODULE,not_exported,[42,Data]}|_]}} =
+    {'EXIT',{undef,[{?MODULE,not_exported,[42,Data],_}|_]}} =
 	(catch ?MODULE:not_exported(42, Data)),
     {yes,Data} = i_am_exported(Data),
     {yes,Data} = ?MODULE:i_am_exported(Data),
@@ -127,7 +127,7 @@ external_call_test(Data) ->
     {ok,Data,[a,b]} = not_exported(Data, [a,b]),
     {yes,Data} = i_am_exported(Data),
     {ok,Data,[a,b]} = not_exported(Data, [a,b]),
-    {'EXIT',{undef,[{?MODULE,not_exported,[7,Data]}|_]}} =
+    {'EXIT',{undef,[{?MODULE,not_exported,[7,Data],_}|_]}} =
 	(catch ?MODULE:not_exported(7, Data)),
     {yes,Data} = ?MODULE:i_am_exported(Data),
     ok.
diff --git a/lib/debugger/test/int_eval_SUITE_data/stacktrace.erl b/lib/debugger/test/int_eval_SUITE_data/stacktrace.erl
index a42dfca433..3380178fdc 100644
--- a/lib/debugger/test/int_eval_SUITE_data/stacktrace.erl
+++ b/lib/debugger/test/int_eval_SUITE_data/stacktrace.erl
@@ -8,7 +8,7 @@
     erlang:system_flag(backtrace_depth, OldDepth),
     {done,Stk}.
 
-trim([{int_eval_SUITE,_,_}|_]) ->
+trim([{int_eval_SUITE,_,_,_}|_]) ->
     [];
 trim([H|T]) ->
     [H|trim(T)];