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-rw-r--r--vm_backtrace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/vm_backtrace.c b/vm_backtrace.c
index 63b5fc371a..70db469074 100644
--- a/vm_backtrace.c
+++ b/vm_backtrace.c
@@ -27,7 +27,7 @@ static VALUE
id2str(ID id)
{
VALUE str = rb_id2str(id);
- if (!id) return Qnil;
+ if (!str) return Qnil;
return str;
}
#define rb_id2str(id) id2str(id)