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&. is not allowed inside LHS of massign

Browse source 
https://hackerone.com/reports/605262
This commit is contained in:
Nobuyoshi Nakada 2019-06-11 02:09:00 +09:00
parent 42ac8890ef
commit 140b8117bd
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GPG key ID: 4BC7D6DF58D8DF60
2 changed files with 11 additions and 0 deletions
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6
parse.y
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@ -1787,6 +1787,9 @@ mlhs_node : user_variable
} }
| primary_value call_op tIDENTIFIER | primary_value call_op tIDENTIFIER
{ {
if ($2 == tANDDOT) {
yyerror1(&@2, "&. inside LHS of multiple assignment");
}
/*%%%*/ /*%%%*/
$$ = attrset(p, $1, $2, $3, &@$); $$ = attrset(p, $1, $2, $3, &@$);
/*% %*/ /*% %*/
@ -1801,6 +1804,9 @@ mlhs_node : user_variable
} }
| primary_value call_op tCONSTANT | primary_value call_op tCONSTANT
{ {
if ($2 == tANDDOT) {
yyerror1(&@2, "&. inside LHS of multiple assignment");
}
/*%%%*/ /*%%%*/
$$ = attrset(p, $1, $2, $3, &@$); $$ = attrset(p, $1, $2, $3, &@$);
/*% %*/ /*% %*/

5
test/ruby/test_syntax.rb
View file

@ -976,6 +976,11 @@ eom
assert_valid_syntax("a\n.:foo") assert_valid_syntax("a\n.:foo")
end end
def test_safe_call_in_massign_lhs
assert_syntax_error("*a&.x=0", /LHS/)
assert_syntax_error("a&.x,=0", /LHS/)
end
def test_no_warning_logop_literal def test_no_warning_logop_literal
assert_warning("") do assert_warning("") do
eval("true||raise;nil") eval("true||raise;nil")