check an existence of block.

* 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

1 files changed, 0 insertions, 1 deletions

diff --git a/vm_core.h b/vm_core.h
index f2ea983d36..3691d13fa5 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -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);