From 4777f33ece33aaaa5066730b950f185cbd5ae816 Mon Sep 17 00:00:00 2001 From: Anthony Ramine Date: Sat, 8 Mar 2014 02:31:53 +0100 Subject: Properly handle redundant boolean clauses in sys_core_fold Boolean case expressions with redundant clauses could make the compiler crash: case X == 0 of false -> no; false -> no; true -> yes end. Reported-by: Ulf Norell --- lib/compiler/test/core_fold_SUITE.erl | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'lib/compiler/test/core_fold_SUITE.erl') diff --git a/lib/compiler/test/core_fold_SUITE.erl b/lib/compiler/test/core_fold_SUITE.erl index 8151dc1b16..9c986576d5 100644 --- a/lib/compiler/test/core_fold_SUITE.erl +++ b/lib/compiler/test/core_fold_SUITE.erl @@ -23,7 +23,7 @@ t_element/1,setelement/1,t_length/1,append/1,t_apply/1,bifs/1, eq/1,nested_call_in_case/1,guard_try_catch/1,coverage/1, unused_multiple_values_error/1,unused_multiple_values/1, - multiple_aliases/1]). + multiple_aliases/1,redundant_boolean_clauses/1]). -export([foo/0,foo/1,foo/2,foo/3]). @@ -40,7 +40,7 @@ groups() -> [t_element,setelement,t_length,append,t_apply,bifs, eq,nested_call_in_case,guard_try_catch,coverage, unused_multiple_values_error,unused_multiple_values, - multiple_aliases]}]. + multiple_aliases,redundant_boolean_clauses]}]. init_per_suite(Config) -> @@ -365,4 +365,13 @@ run_once() -> ok. +redundant_boolean_clauses(Config) when is_list(Config) -> + X = id(0), + yes = case X == 0 of + false -> no; + false -> no; + true -> yes + end. + + id(I) -> I. -- cgit v1.2.3