* vm.c (vm_define_method): improve guard of iseq from GC. Fix

  failure or segmentation fault in test_singleton_method(TestGc)
  on sparc Solaris10 compiled with Oracle Solaris Studio 12.2.
  [Bug #5762] [ruby-dev:45000] [Bug #4178]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34071 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 2 deletions

diff --git a/vm.c b/vm.c
index e04a44b696..67ca4393a5 100644
--- a/vm.c
+++ b/vm.c
@@ -1912,8 +1912,7 @@ vm_define_method(rb_thread_t *th, VALUE obj, ID id, VALUE iseqval,
     GetISeqPtr(iseqval, miseq);
 
     if (miseq->klass) {
-	iseqval = rb_iseq_clone(iseqval, 0);
-	RB_GC_GUARD(iseqval);
+	RB_GC_GUARD(iseqval) = rb_iseq_clone(iseqval, 0);
 	GetISeqPtr(iseqval, miseq);
     }