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compile.c: fix stack consitency error

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* compile.c (iseq_compile_each0): fix stack consitency error on
  attr-assign with safe navigation operator when the receiver is
  nil, should pop it too.  [ruby-core:83078] [Bug #13964]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60099 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-10-02 08:33:30 +00:00
parent f5740d18bf
commit 896e7f2d8d
2 changed files with 5 additions and 1 deletions
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5
compile.c
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@ -5415,8 +5415,11 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, NODE *node, int popp
ADD_INSN1(ret, line, topn, INT2FIX(1));
}
ADD_SEND_WITH_FLAG(ret, line, aid, INT2FIX(1), INT2FIX(asgnflag));
if (lskip && popped) {
ADD_LABEL(ret, lskip);
}
ADD_INSN(ret, line, pop);
if (lskip) {
if (lskip && !popped) {
ADD_LABEL(ret, lskip);
}
}

1
test/ruby/test_call.rb
View file

@ -52,6 +52,7 @@ class TestCall < Test::Unit::TestCase
assert_nil(o&.x)
assert_nothing_raised(NoMethodError) {o&.x = 6}
assert_nothing_raised(NoMethodError) {o&.x *= 7}
assert_nothing_raised(NoMethodError) {o&.x *= 8; [].each {}}
end
def test_safe_call_evaluate_arguments_only_method_call_is_made