From 86de3e411aa65b273d1123f7260c016f31fc08ec Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 16 Feb 2018 01:15:35 +0000
Subject: compile.c: keep debug info

* compile.c (iseq_peephole_optimize): keep freezestring insn
  with debug info.  [Bug #14475]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62418 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 compile.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'compile.c')

diff --git a/compile.c b/compile.c
index 7d065b25d3..ba380ab408 100644
--- a/compile.c
+++ b/compile.c
@@ -2846,11 +2846,12 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
     }
 
     if (IS_INSN_ID(iobj, freezestring) &&
+	NIL_P(OPERAND_AT(iobj, 0)) &&
 	IS_NEXT_INSN_ID(&iobj->link, send)) {
 	INSN *niobj = (INSN *)iobj->link.next;
 	struct rb_call_info *ci = (struct rb_call_info *)OPERAND_AT(niobj, 0);
 	/*
-	 *  freezestring debug_info
+	 *  freezestring nil # no debug_info
 	 *  send <:+@, 0, ARG_SIMPLE>  # :-@, too
 	 * =>
 	 *  send <:+@, 0, ARG_SIMPLE>  # :-@, too
-- 
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