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check an existence of block.

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* gc.c (rb_raw_obj_info): check block before using it.

* vm_core.h (vm_block_iseq): r61565 introduced NULL check but this
  check is only needed by `rb_raw_obj_info()` and it is called at GC
  debug mode. Above fix for `rb_raw_obj_info()` solves this problem and
  NULL check should not be needed any more.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61571 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ko1 2018-01-02 15:29:58 +00:00
parent 6faadd7838
commit cff48e4456
2 changed files with 5 additions and 2 deletions
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6
gc.c
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@ -9346,8 +9346,12 @@ rb_raw_obj_info(char *buff, const int buff_size, VALUE obj)
break;
}
case T_DATA: {
const struct rb_block *block;
const rb_iseq_t *iseq;
if (rb_obj_is_proc(obj) && (iseq = vm_proc_iseq(obj)) != NULL) {
if (rb_obj_is_proc(obj) &&
(block = vm_proc_block(obj)) != NULL &&
(vm_block_type(block) == block_type_iseq) &&
(iseq = vm_block_iseq(block)) != NULL) {
rb_raw_iseq_info(buff, buff_size, iseq);
}
else {

1
vm_core.h
View file

@ -1406,7 +1406,6 @@ vm_proc_ep(VALUE procval)
static inline const rb_iseq_t *
vm_block_iseq(const struct rb_block *block)
{
if (!block) return NULL;
switch (vm_block_type(block)) {
case block_type_iseq: return rb_iseq_check(block->as.captured.code.iseq);
case block_type_proc: return vm_proc_iseq(block->as.proc);