merge revision(s) ea42423908ed055f9039b1dce6e9a232a3b2dd90: [Backport #15887]

	Keep vm->orig_progname alive
	
	`vm->orig_progname` can be different from `vm->progname` when user
	code assigns to `$0`. While `vm->progname` is kept alive by the
	global table, nothing marked `vm->orig_progname`.
	
	[Bug #15887]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@67761 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/vm.c b/vm.c
index 5d15734055..bf7bbbf43c 100644
--- a/vm.c
+++ b/vm.c
@@ -2100,6 +2100,7 @@ rb_vm_mark(void *ptr)
 	rb_gc_mark(vm->loaded_features);
 	rb_gc_mark(vm->loaded_features_snapshot);
 	rb_gc_mark(vm->top_self);
+        rb_gc_mark(vm->orig_progname);
 	RUBY_MARK_UNLESS_NULL(vm->coverages);
 	rb_gc_mark(vm->defined_module_hash);