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authorBjörn Gustavsson <[email protected]>2010-09-23 09:35:34 +0200
committerBjörn Gustavsson <[email protected]>2010-09-23 09:35:34 +0200
commitd0c538e3dd5072ad0227553f5dd7dcdc2e6c3288 (patch)
tree9953e399c5e437247350fcfcc4d8b743169f49ea
parentdc7d2319691fa599717c066460cce53ce97b6b18 (diff)
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Fix compiler crash when constructing zero-size binary segments
Code such as foo(A) -> <<A:0>>. would cause a compiler crash.
-rw-r--r--lib/compiler/src/v3_codegen.erl4
-rw-r--r--lib/compiler/test/bs_construct_SUITE.erl4
2 files changed, 6 insertions, 2 deletions
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index 948937c438..77da6c8d00 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -1523,7 +1523,9 @@ cg_binary_size_1([], Bits, Acc) ->
[{1,_}|_] ->
{bs_init_bits,cg_binary_bytes_to_bits(Sizes, [])};
[{8,_}|_] ->
- {bs_init2,[E || {8,E} <- Sizes]}
+ {bs_init2,[E || {8,E} <- Sizes]};
+ [] ->
+ {bs_init_bits,[]}
end.
cg_binary_size_2({integer,N}, U, _, Next, Bits, Acc) ->
diff --git a/lib/compiler/test/bs_construct_SUITE.erl b/lib/compiler/test/bs_construct_SUITE.erl
index 1862a28bbe..dfe4301791 100644
--- a/lib/compiler/test/bs_construct_SUITE.erl
+++ b/lib/compiler/test/bs_construct_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2010. 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
@@ -66,6 +66,8 @@ id(I) -> I.
l(I_13, I_big1, I_16, Bin) ->
[
+ ?T(<<I_13:0>>,
+ []),
?T(<<-43>>,
[256-43]),
?T(<<4:4,7:4>>,