https://git.ruby-lang.org/ruby.git/commit/?id=b5174beae6

From b5174beae6e02b109ed2c5d5ad9c4653596236e4 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Sun, 26 Apr 2020 12:28:56 +0900
Subject: lldb_cruby.py: fixed empty string dump [ci skip]


diff --git a/misc/lldb_cruby.py b/misc/lldb_cruby.py
index a582b7d..8876581 100755
--- a/misc/lldb_cruby.py
+++ b/misc/lldb_cruby.py
@@ -132,7 +132,10 @@ def lldb_inspect(debugger, target, result, val): https://github.com/ruby/ruby/blob/trunk/misc/lldb_cruby.py#L132
             result.write('T_STRING: %s' % flaginfo)
             tRString = target.FindFirstType("struct RString").GetPointerType()
             ptr, len = string2cstr(val.Cast(tRString))
-            append_command_output(debugger, "print *(const char (*)[%d])%0#x" % (len, ptr), result)
+            if len == 0:
+                result.write("(empty)\n")
+            else:
+                append_command_output(debugger, "print *(const char (*)[%d])%0#x" % (len, ptr), result)
         elif flType == RUBY_T_SYMBOL:
             result.write('T_SYMBOL: %s' % flaginfo)
             tRSymbol = target.FindFirstType("struct RSymbol").GetPointerType()
-- 
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