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authorBjörn Gustavsson <[email protected]>2013-08-14 13:16:00 +0200
committerBjörn Gustavsson <[email protected]>2013-08-15 12:21:06 +0200
commit8e10c8aac09de9165deb1c04cd908c8057c7f173 (patch)
tree9c9d5af889e78221bd422859461ab4e95c59b21f /lib/compiler
parentfd3e32e7a13b522a04e17c815bba11d307fa1049 (diff)
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Fix compiler crash for 'B and B' guard
Diffstat (limited to 'lib/compiler')
-rw-r--r--lib/compiler/src/beam_bool.erl3
-rw-r--r--lib/compiler/test/guard_SUITE.erl8
2 files changed, 11 insertions, 0 deletions
diff --git a/lib/compiler/src/beam_bool.erl b/lib/compiler/src/beam_bool.erl
index cf5455dfde..124abd13c1 100644
--- a/lib/compiler/src/beam_bool.erl
+++ b/lib/compiler/src/beam_bool.erl
@@ -425,6 +425,9 @@ bopt_tree([], Forest, Pre) ->
safe_bool_op(N, Ar) ->
erl_internal:new_type_test(N, Ar) orelse erl_internal:comp_op(N, Ar).
+bopt_bool_args([V0,V0], Forest0) ->
+ {V,Forest} = bopt_bool_arg(V0, Forest0),
+ {[V,V],Forest};
bopt_bool_args(As, Forest) ->
mapfoldl(fun bopt_bool_arg/2, Forest, As).
diff --git a/lib/compiler/test/guard_SUITE.erl b/lib/compiler/test/guard_SUITE.erl
index 5656d23090..a0a9bb7ddd 100644
--- a/lib/compiler/test/guard_SUITE.erl
+++ b/lib/compiler/test/guard_SUITE.erl
@@ -813,8 +813,16 @@ and_guard(Config) when is_list(Config) ->
?line ok = relprod({'Set',a,b}, {'Set',a,b}),
+ ok = and_same_var(42),
+ {'EXIT',{if_clause,_}} = (catch and_same_var(x)),
ok.
+and_same_var(V) ->
+ B = is_integer(V),
+ if
+ B or B -> ok
+ end.
+
relprod(R1, R2) when (erlang:size(R1) =:= 3) and (erlang:element(1,R1) =:= 'Set'), (erlang:size(R2) =:= 3) and (erlang:element(1,R2) =:= 'Set') ->
ok.