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Avoid improper optimization of case statements mixed integer/rational/complex

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Fixes [Bug #17857]
This commit is contained in:
Jeremy Evans 2021-05-12 15:06:12 -07:00
parent 11ae581a4a
commit 9ce29c94d8
Notes: git 2021-05-13 11:30:25 +09:00 
Merged: https://github.com/ruby/ruby/pull/4496
2 changed files with 15 additions and 0 deletions
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3
compile.c
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@ -4537,6 +4537,9 @@ rb_node_case_when_optimizable_literal(const NODE *const node)
modf(RFLOAT_VALUE(v), &ival) == 0.0) {
return FIXABLE(ival) ? LONG2FIX((long)ival) : rb_dbl2big(ival);
}
if (RB_TYPE_P(v, T_RATIONAL) || RB_TYPE_P(v, T_COMPLEX)) {
return Qundef;
}
if (SYMBOL_P(v) || rb_obj_is_kind_of(v, rb_cNumeric)) {
return v;
}

12
test/ruby/test_case.rb
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@ -102,6 +102,18 @@ class TestCase < Test::Unit::TestCase
else
assert(false)
end
case 0
when 0r
assert(true)
else
assert(false)
end
case 0
when 0i
assert(true)
else
assert(false)
end
end
def test_method_missing