https://gcc.gnu.org/gcc-10/changes.html#c
> * GCC now defaults to `-fno-common`. As a result, global
> variable accesses are more efficient on various targets. In
> C, global variables with multiple tentative definitions now
> result in linker errors. With `-fcommon` such definitions are
> silently merged during linking.
use 0 for rb_data_type_t::reserved instead of NULL, since its type
may be changed in the future and possibly not a pointer type.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48662 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
folerecord_inspect): use PRIsVALUE in rb_sprintf.
* ext/win32ole/win32ole_param.c(foleparam_inspect): ditto.
* ext/win32ole/win32ole_variable.c(folevariable_inspect): use
PRIsVALUE in rb_sprintf, use rb_inspect.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47167 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
