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gc.c: NULL check at memsize

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* gc.c (rb_objspace_data_type_memsize): consider NULL data uses no
  memory without calling dsize function as well as other functions.
  fix SEGV in test/objspace with RUBY_ISEQ_DUMP_DEBUG=to_binary.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-12-08 17:28:32 +00:00
parent e78bf7976c
commit a8fb40db8c
1 changed files with 7 additions and 5 deletions
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10
gc.c
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@ -1953,12 +1953,14 @@ rb_data_typed_object_zalloc(VALUE klass, size_t size, const rb_data_type_t *type
size_t size_t
rb_objspace_data_type_memsize(VALUE obj) rb_objspace_data_type_memsize(VALUE obj)
{ {
if (RTYPEDDATA_P(obj) && RTYPEDDATA_TYPE(obj)->function.dsize) { if (RTYPEDDATA_P(obj)) {
return RTYPEDDATA_TYPE(obj)->function.dsize(RTYPEDDATA_DATA(obj)); const rb_data_type_t *type = RTYPEDDATA_TYPE(obj);
const void *ptr = RTYPEDDATA_DATA(obj);
if (ptr && type->function.dsize) {
return type->function.dsize(ptr);
}
} }
else {
return 0; return 0;
}
} }
const char * const char *