diff options
Diffstat (limited to 'lib/stdlib/src/beam_lib.erl')
| -rw-r--r-- | lib/stdlib/src/beam_lib.erl | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/lib/stdlib/src/beam_lib.erl b/lib/stdlib/src/beam_lib.erl index 820afd3739..91ff2438c6 100644 --- a/lib/stdlib/src/beam_lib.erl +++ b/lib/stdlib/src/beam_lib.erl @@ -1,19 +1,19 @@ %% %% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2000-2009. All Rights Reserved. -%% +%% +%% Copyright Ericsson AB 2000-2010. All Rights Reserved. +%% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in %% compliance with the License. You should have received a copy of the %% Erlang Public License along with this software. If not, it can be %% retrieved online at http://www.erlang.org/. -%% +%% %% Software distributed under the License is distributed on an "AS IS" %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See %% the License for the specific language governing rights and limitations %% under the License. -%% +%% %% %CopyrightEnd% %% -module(beam_lib). @@ -41,12 +41,11 @@ terminate/2,code_change/3]). -export([make_crypto_key/2, get_crypto_key/1]). %Utilities used by compiler +-export_type([attrib_entry/0, compinfo_entry/0, labeled_entry/0]). + -import(lists, [append/1, delete/2, foreach/2, keysort/2, member/2, reverse/1, sort/1, splitwith/2]). --include_lib("kernel/include/file.hrl"). --include("erl_compile.hrl"). - %%------------------------------------------------------------------------- -type beam() :: module() | file:filename() | binary(). @@ -331,13 +330,11 @@ beam_files(Dir) -> %% -> ok | throw(Error) cmp_files(File1, File2) -> - {ok, {M1, L1}} = read_significant_chunks(File1), - {ok, {M2, L2}} = read_significant_chunks(File2), + {ok, {M1, L1}} = read_all_but_useless_chunks(File1), + {ok, {M2, L2}} = read_all_but_useless_chunks(File2), if M1 =:= M2 -> - List1 = filter_funtab(L1), - List2 = filter_funtab(L2), - cmp_lists(List1, List2); + cmp_lists(L1, L2); true -> error({modules_different, M1, M2}) end. @@ -408,6 +405,20 @@ pad(Size) -> end. %% -> {ok, {Module, Chunks}} | throw(Error) +read_all_but_useless_chunks(File0) when is_atom(File0); + is_list(File0); + is_binary(File0) -> + File = beam_filename(File0), + {ok, Module, ChunkIds0} = scan_beam(File, info), + ChunkIds = [Name || {Name,_,_} <- ChunkIds0, + not is_useless_chunk(Name)], + {ok, Module, Chunks} = scan_beam(File, ChunkIds), + {ok, {Module, lists:reverse(Chunks)}}. + +is_useless_chunk("CInf") -> true; +is_useless_chunk(_) -> false. + +%% -> {ok, {Module, Chunks}} | throw(Error) read_significant_chunks(File) -> case read_chunk_data(File, significant_chunks(), [allow_missing_chunks]) of {ok, {Module, Chunks0}} -> |