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-rw-r--r--eval.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/eval.c b/eval.c
index ec1beb3acd..cca4c44c61 100644
--- a/eval.c
+++ b/eval.c
@@ -4740,7 +4740,10 @@ rb_yield_0(VALUE val, VALUE self, VALUE klass /* OK */, int flags)
}
else {
if (pcall) {
- val = RARRAY(val)->ptr[0];
+ if (RARRAY(val)->len == 0)
+ val = Qnil;
+ else
+ val = RARRAY(val)->ptr[0];
}
assign(self, var, val, pcall);
}