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authorHans Bolinder <[email protected]>2014-06-30 13:42:06 +0200
committerHans Bolinder <[email protected]>2014-06-30 13:42:06 +0200
commita884f78ee7609b3140f5a9fb524599be4ea816d7 (patch)
tree7bc0690dae4881831308cd14b40365e9e717584b /lib
parente54518231ac28096dec8f0a63afe527916ff1343 (diff)
parentd78df206f9356629d82891e5853f7ff53c9f9749 (diff)
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Merge branch 'hb/hipe/pretty_bitstring/OTP-12015' into maint
* hb/hipe/pretty_bitstring/OTP-12015: hipe: Correct pretty-printing of bitstrings
Diffstat (limited to 'lib')
-rw-r--r--lib/dialyzer/test/small_SUITE_data/results/pretty_bitstring3
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/pretty_bitstring.erl8
-rw-r--r--lib/hipe/cerl/cerl_prettypr.erl17
3 files changed, 23 insertions, 5 deletions
diff --git a/lib/dialyzer/test/small_SUITE_data/results/pretty_bitstring b/lib/dialyzer/test/small_SUITE_data/results/pretty_bitstring
new file mode 100644
index 0000000000..0ad6eee766
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/results/pretty_bitstring
@@ -0,0 +1,3 @@
+
+pretty_bitstring.erl:7: Function t/0 has no local return
+pretty_bitstring.erl:8: The call binary:copy(#{#<1>(8, 1, 'integer', ['unsigned', 'big']), #<2>(8, 1, 'integer', ['unsigned', 'big']), #<3>(3, 1, 'integer', ['unsigned', 'big'])}#,2) breaks the contract (Subject,N) -> binary() when is_subtype(Subject,binary()), is_subtype(N,non_neg_integer())
diff --git a/lib/dialyzer/test/small_SUITE_data/src/pretty_bitstring.erl b/lib/dialyzer/test/small_SUITE_data/src/pretty_bitstring.erl
new file mode 100644
index 0000000000..3dbf5ab7a7
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/pretty_bitstring.erl
@@ -0,0 +1,8 @@
+%% Prettyprint bitstrings.
+
+-module(pretty_bitstring).
+
+-export([t/0]).
+
+t() ->
+ binary:copy(<<1,2,3:3>>,2).
diff --git a/lib/hipe/cerl/cerl_prettypr.erl b/lib/hipe/cerl/cerl_prettypr.erl
index 9a3873f46d..f4a67439d6 100644
--- a/lib/hipe/cerl/cerl_prettypr.erl
+++ b/lib/hipe/cerl/cerl_prettypr.erl
@@ -1,7 +1,7 @@
%% =====================================================================
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -476,13 +476,20 @@ lay_literal(Node, Ctxt) ->
%% that could represent printable characters - we
%% always print an integer.
text(int_lit(Node));
- V when is_binary(V) ->
- lay_binary(c_binary([c_bitstr(abstract(B),
- abstract(8),
+ V when is_bitstring(V) ->
+ Val = fun(I) when is_integer(I) -> I;
+ (B) when is_bitstring(B) ->
+ BZ = bit_size(B), <<BV:BZ>> = B, BV
+ end,
+ Sz = fun(I) when is_integer(I) -> 8;
+ (B) when is_bitstring(B) -> bit_size(B)
+ end,
+ lay_binary(c_binary([c_bitstr(abstract(Val(B)),
+ abstract(Sz(B)),
abstract(1),
abstract(integer),
abstract([unsigned, big]))
- || B <- binary_to_list(V)]),
+ || B <- bitstring_to_list(V)]),
Ctxt);
[] ->
text("[]");