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vm_core.h: fix symbols leak

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* vm_core.h (rb_call_info_kw_arg_struct): make keywords a symbols
  list to get rid of inadvertent creation by variable keyword
  arguments.  [ruby-core:68031] [Bug #10831]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49517 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-02-06 01:31:53 +00:00
parent e27a538eab
commit b4f61ad610
5 changed files with 48 additions and 18 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
Fri Feb 6 10:31:50 2015 Nobuyoshi Nakada <nobu@ruby-lang.org>
* vm_core.h (rb_call_info_kw_arg_struct): make keywords a symbols
list to get rid of inadvertent creation by variable keyword
arguments. [ruby-core:68031] [Bug #10831]
Thu Feb 5 22:42:34 2015 SHIBATA Hiroshi <shibata.hiroshi@gmail.com>
* lib/rubygems: Update to RubyGems HEAD(5c3b6f3).

10
compile.c
View file

@ -2409,7 +2409,7 @@ compile_array_keyword_arg(rb_iseq_t *iseq, LINK_ANCHOR *ret, const NODE * const
{
int len = (int)node->nd_alen / 2;
rb_call_info_kw_arg_t *kw_arg = (rb_call_info_kw_arg_t *)ruby_xmalloc(sizeof(rb_call_info_kw_arg_t) + sizeof(VALUE) * (len - 1));
ID *keywords = kw_arg->keywords;
VALUE *keywords = kw_arg->keywords;
int i = 0;
kw_arg->keyword_len = len;
@ -2418,7 +2418,7 @@ compile_array_keyword_arg(rb_iseq_t *iseq, LINK_ANCHOR *ret, const NODE * const
for (i=0; node != NULL; i++, node = node->nd_next->nd_next) {
NODE *key_node = node->nd_head;
NODE *val_node = node->nd_next->nd_head;
keywords[i] = SYM2ID(key_node->nd_lit);
keywords[i] = key_node->nd_lit;
COMPILE(ret, "keyword values", val_node);
}
assert(i == len);
@ -5844,12 +5844,14 @@ iseq_build_callinfo_from_hash(rb_iseq_t *iseq, VALUE op)
if (!NIL_P(vkw_arg)) {
int i;
int len = RARRAY_LENINT(vkw_arg);
size_t n = sizeof(rb_call_info_kw_arg_t) + sizeof(ID) * (len - 1);
size_t n = sizeof(rb_call_info_kw_arg_t) + sizeof(VALUE) * (len - 1);
kw_arg = xmalloc(n);
kw_arg->keyword_len = len;
for (i = 0; i < len; i++) {
kw_arg->keywords[i] = SYM2ID(RARRAY_AREF(vkw_arg, i));
VALUE kw = RARRAY_AREF(vkw_arg, i);
SYM2ID(kw); /* make immortal */
kw_arg->keywords[i] = kw;
}
}
}

21
test/-ext-/symbol/test_inadvertent_creation.rb
View file

@ -426,5 +426,26 @@ module Test_Symbol
x.method(:send).call(name.to_sym)
end
end
def test_kwarg_symbol_leak_no_rest
foo = -> (arg: 42) {}
assert_no_immortal_symbol_created("kwarg no rest") do |name|
assert_raise(ArgumentError) { foo.call(name.to_sym => 42) }
end
end
def test_kwarg_symbol_leak_with_rest
foo = -> (arg: 2, **options) {}
assert_no_immortal_symbol_created("kwarg with rest") do |name|
foo.call(name.to_sym => 42)
end
end
def test_kwarg_symbol_leak_just_rest
foo = -> (**options) {}
assert_no_immortal_symbol_created("kwarg just rest") do |name|
foo.call(name.to_sym => 42)
end
end
end
end

27
vm_args.c
View file

@ -238,7 +238,7 @@ args_pop_keyword_hash(struct args_info *args, VALUE *kw_hash_ptr, rb_thread_t *t
static int
args_kw_argv_to_hash(struct args_info *args)
{
const ID * const passed_keywords = args->ci->kw_arg->keywords;
const VALUE *const passed_keywords = args->ci->kw_arg->keywords;
const int kw_len = args->ci->kw_arg->keyword_len;
VALUE h = rb_hash_new();
const int kw_start = args->argc - kw_len;
@ -247,7 +247,7 @@ args_kw_argv_to_hash(struct args_info *args)
args->argc = kw_start + 1;
for (i=0; i<kw_len; i++) {
rb_hash_aset(h, ID2SYM(passed_keywords[i]), kw_argv[i]);
rb_hash_aset(h, passed_keywords[i], kw_argv[i]);
}
args->argv[args->argc - 1] = h;
@ -260,11 +260,11 @@ args_stored_kw_argv_to_hash(struct args_info *args)
{
VALUE h = rb_hash_new();
int i;
const ID * const passed_keywords = args->ci->kw_arg->keywords;
const VALUE *const passed_keywords = args->ci->kw_arg->keywords;
const int passed_keyword_len = args->ci->kw_arg->keyword_len;
for (i=0; i<passed_keyword_len; i++) {
rb_hash_aset(h, ID2SYM(passed_keywords[i]), args->kw_argv[i]);
rb_hash_aset(h, passed_keywords[i], args->kw_argv[i]);
}
args->kw_argv = NULL;
@ -348,7 +348,7 @@ args_setup_rest_parameter(struct args_info *args, VALUE *locals)
}
static VALUE
make_unused_kw_hash(const ID *passed_keywords, int passed_keyword_len, const VALUE *kw_argv, const int key_only)
make_unused_kw_hash(const VALUE *passed_keywords, int passed_keyword_len, const VALUE *kw_argv, const int key_only)
{
int i;
VALUE obj = key_only ? rb_ary_tmp_new(1) : rb_hash_new();
@ -356,10 +356,10 @@ make_unused_kw_hash(const ID *passed_keywords, int passed_keyword_len, const VAL
for (i=0; i<passed_keyword_len; i++) {
if (kw_argv[i] != Qundef) {
if (key_only) {
rb_ary_push(obj, ID2SYM(passed_keywords[i]));
rb_ary_push(obj, passed_keywords[i]);
}
else {
rb_hash_aset(obj, ID2SYM(passed_keywords[i]), kw_argv[i]);
rb_hash_aset(obj, passed_keywords[i], kw_argv[i]);
}
}
}
@ -367,12 +367,13 @@ make_unused_kw_hash(const ID *passed_keywords, int passed_keyword_len, const VAL
}
static inline int
args_setup_kw_parameters_lookup(const ID key, VALUE *ptr, const ID * const passed_keywords, VALUE *passed_values, const int passed_keyword_len)
args_setup_kw_parameters_lookup(const ID key, VALUE *ptr, const VALUE *const passed_keywords, VALUE *passed_values, const int passed_keyword_len)
{
int i;
const VALUE keyname = ID2SYM(key);
for (i=0; i<passed_keyword_len; i++) {
if (key == passed_keywords[i]) {
if (keyname == passed_keywords[i]) {
*ptr = passed_values[i];
passed_values[i] = Qundef;
return TRUE;
@ -383,7 +384,7 @@ args_setup_kw_parameters_lookup(const ID key, VALUE *ptr, const ID * const passe
}
static void
args_setup_kw_parameters(VALUE* const passed_values, const int passed_keyword_len, const ID * const passed_keywords,
args_setup_kw_parameters(VALUE* const passed_values, const int passed_keyword_len, const VALUE *const passed_keywords,
const rb_iseq_t * const iseq, VALUE * const locals)
{
const ID *acceptable_keywords = iseq->param.keyword->table;
@ -495,7 +496,7 @@ fill_keys_values(st_data_t key, st_data_t val, st_data_t ptr)
{
struct fill_values_arg *arg = (struct fill_values_arg *)ptr;
int i = arg->argc++;
arg->keys[i] = SYM2ID((VALUE)key);
arg->keys[i] = (VALUE)key;
arg->vals[i] = (VALUE)val;
return ST_CONTINUE;
}
@ -722,14 +723,14 @@ vm_caller_setup_arg_splat(rb_control_frame_t *cfp, rb_call_info_t *ci)
static inline void
vm_caller_setup_arg_kw(rb_control_frame_t *cfp, rb_call_info_t *ci)
{
const ID * const passed_keywords = ci->kw_arg->keywords;
const VALUE *const passed_keywords = ci->kw_arg->keywords;
const int kw_len = ci->kw_arg->keyword_len;
const VALUE h = rb_hash_new();
VALUE *sp = cfp->sp;
int i;
for (i=0; i<kw_len; i++) {
rb_hash_aset(h, ID2SYM(passed_keywords[i]), (sp - kw_len)[i]);
rb_hash_aset(h, passed_keywords[i], (sp - kw_len)[i]);
}
(sp-kw_len)[0] = h;

2
vm_core.h
View file

@ -137,7 +137,7 @@ struct rb_control_frame_struct;
typedef struct rb_call_info_kw_arg_struct {
int keyword_len;
ID keywords[1];
VALUE keywords[1];
} rb_call_info_kw_arg_t;
/* rb_call_info_t contains calling information including inline cache */