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.

1 files changed, 6 insertions, 6 deletions

diff --git a/lib/stdlib/src/unicode.erl b/lib/stdlib/src/unicode.erl
index a5d9965ca2..e9b90befe6 100644
--- a/lib/stdlib/src/unicode.erl
+++ b/lib/stdlib/src/unicode.erl
@@ -73,7 +73,7 @@ characters_to_list_int(ML, Encoding) ->
 			   _ ->
 			       badarg
 		       end,
-	    {'EXIT',{new_stacktrace,[{Mod,_,L}|Rest]}} = 
+	    {'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
 		(catch erlang:error(new_stacktrace,
 				    [ML,Encoding])),
 	    erlang:raise(error,TheError,[{Mod,characters_to_list,L}|Rest])
@@ -109,7 +109,7 @@ characters_to_binary(ML) ->
 			   _ ->
 			       badarg
 		       end,
-	    {'EXIT',{new_stacktrace,[{Mod,_,L}|Rest]}} = 
+	    {'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
 		(catch erlang:error(new_stacktrace,
 				    [ML])),
 	    erlang:raise(error,TheError,[{Mod,characters_to_binary,L}|Rest])
@@ -127,7 +127,7 @@ characters_to_binary_int(ML,InEncoding) ->
 			   _ ->
 			       badarg
 		       end,
-	    {'EXIT',{new_stacktrace,[{Mod,_,L}|Rest]}} = 
+	    {'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
 		(catch erlang:error(new_stacktrace,
 				    [ML,InEncoding])),
 	    erlang:raise(error,TheError,[{Mod,characters_to_binary,L}|Rest])
@@ -159,7 +159,7 @@ characters_to_binary(ML, latin1, Uni) when is_binary(ML) and ((Uni =:= utf8) or
 				       _ ->
 					   badarg
 				   end,
-			{'EXIT',{new_stacktrace,[{Mod,_,L}|Rest]}} = 
+			{'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
 			    (catch erlang:error(new_stacktrace,
 						[ML,latin1,Uni])),
 			erlang:raise(error,TheError,
@@ -181,7 +181,7 @@ characters_to_binary(ML,Uni,latin1) when is_binary(ML) and ((Uni =:= utf8) or
 				       _ ->
 					   badarg
 				   end,
-			{'EXIT',{new_stacktrace,[{Mod,_,L}|Rest]}} = 
+			{'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
 			    (catch erlang:error(new_stacktrace,
 						[ML,Uni,latin1])),
 			erlang:raise(error,TheError,
@@ -200,7 +200,7 @@ characters_to_binary(ML, InEncoding, OutEncoding) ->
 			   _ ->
 			       badarg
 		       end,
-	    {'EXIT',{new_stacktrace,[{Mod,_,L}|Rest]}} = 
+	    {'EXIT',{new_stacktrace,[{Mod,_,L,_}|Rest]}} =
 		(catch erlang:error(new_stacktrace,
 				    [ML,InEncoding,OutEncoding])),
 	    erlang:raise(error,TheError,[{Mod,characters_to_binary,L}|Rest])