gc.c: RB_GC_GUARD should be robust enough for any compiler
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45064 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
gc.c: RB_GC_GUARD should be robust enough for any compiler
use rb_gc_guarded_ptr_val on non-GCC/MSC
RB_GC_GUARD should be robust enough for any compiler.
[ruby-core:60816] [Bug #7805]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45064 b2dd03c8-39d4-4d8f-98ff-823fe69b080e