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parse.y: rescue modifier in rhs

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* parse.y (command_asgn): rescue modifier in command assignment
  should be limited to rhs only.  [ruby-core:75621] [Bug #12402]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55851 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2016-08-10 08:26:46 +00:00
parent 89ab385b17
commit 064ed74be4
3 changed files with 27 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Wed Aug 10 17:26:43 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* parse.y (command_asgn): rescue modifier in command assignment
should be limited to rhs only. [ruby-core:75621] [Bug #12402]
Wed Aug 10 15:35:03 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* ext/win32/resolv/resolv.c: needs windows.h for iphlpapi.h on

12
parse.y
View file

@ -1357,6 +1357,18 @@ command_asgn : lhs '=' command_call
$$ = dispatch2(assign, $1, $3);
%*/
}
| lhs '=' command_call modifier_rescue stmt
{
/*%%%*/
NODE *resq = NEW_RESBODY(0, remove_begin($5), 0);
value_expr($3);
resq = NEW_RESCUE($3, resq, 0);
$$ = node_assign($1, resq);
/*%
$3 = dispatch2(rescue_mod, $3, $5);
$$ = dispatch2(assign, $1, $3);
%*/
}
| lhs '=' command_asgn
{
/*%%%*/

10
test/ruby/test_parse.rb
View file

@ -874,6 +874,16 @@ x = __ENCODING__
assert_warning('') {eval("#{a} = 1; /(?<#{a}>)/ =~ ''")}
end
def test_rescue_in_command_assignment
bug = '[ruby-core:75621] [Bug #12402]'
v = bug
v = raise(v) rescue "ok"
assert_equal("ok", v)
v = bug
v = raise v rescue "ok"
assert_equal("ok", v)
end
=begin
def test_past_scope_variable
assert_warning(/past scope/) {catch {|tag| eval("BEGIN{throw tag}; tap {a = 1}; a")}}