[Bug #19836]
The parser does not free the chain of `struct vtable`, which causes
memory leaks.
The following script reproduces this issue:
```
10.times do
100_000.times do
Ripper.parse("-> {")
end
puts `ps -o rss= -p #{$$}`
end
```
[Bug #19835]
The parser does not free the `tbl` of the `struct vtable` when there are
leftover `lvtbl` in the parser. This causes a memory leak.
The following script reproduces this issue:
```
10.times do
100_000.times do
Ripper.parse("class Foo")
end
puts `ps -o rss= -p #{$$}`
end
```
```ruby
def helper_cant_rescue
begin
raise SyntaxError
rescue
cant_rescue # here
end
end
```
on this case, a line event is reported on `cant_rescue` line
because of node structure. it should not be reported.
This fixes an infinite loop possible after ec3542229b.
For \u{} escapes in regexps, skip validation in the parser, and rely on the regexp
code to handle validation. This is necessary so that invalid unicode escapes in
comments in extended regexps are allowed.
Fixes [Bug #19750]
Co-authored-by: Nobuyoshi Nakada <nobu@ruby-lang.org>
According to the C99 specification section 7.20.3.2 paragraph 2:
> If ptr is a null pointer, no action occurs.
So we do not need to check that the pointer is a null pointer.
`yyparse` never changes the value of `coverage_enabled`.
`coverage_enabled` depends on only return value of `e_option_supplied`.
Therefore `parser_params` doesn't need to have `coverage_enabled.
Introduce Universal Parser mode for the parser.
This commit includes these changes:
* Introduce `UNIVERSAL_PARSER` macro. All of CRuby related functions
are passed via `struct rb_parser_config_struct` when this macro is enabled.
* Add CI task with 'cppflags=-DUNIVERSAL_PARSER' for ubuntu.
98637d421d changes the name of
the function. However this function is exported as global,
then change the name to origin one for keeping compatibility.
After 6c0925ba70, it was impossible
to distinguish between the presence or absence of `*`.
# Before the commit
Ripper.sexp('0 in []')[1][0][2][1] #=> [:aryptn, nil, nil, nil, nil]
Ripper.sexp('0 in [*]')[1][0][2][1] #=> [:aryptn, nil, nil, [:var_field, nil], nil]
# After the commit
Ripper.sexp('0 in []')[1][0][2][1] #=> [:aryptn, nil, nil, nil, nil]
Ripper.sexp('0 in [*]')[1][0][2][1] #=> [:aryptn, nil, nil, nil, nil]
This commit reverts it.
