From afab8122c339586ccb120861cc700aa8eee7402c Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 23 Oct 2019 02:04:36 +0900
Subject: [PATCH] Fix the exception when CPDEBUG

---
 compile.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/compile.c b/compile.c
index c25ffbe27f..0ca8757c05 100644
--- a/compile.c
+++ b/compile.c
@@ -391,7 +391,10 @@ append_compile_error(const rb_iseq_t *iseq, int line, const char *fmt, ...)
     else if (!err_info) {
 	RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, Qtrue);
     }
-    if (compile_debug) rb_exc_fatal(err);
+    if (compile_debug) {
+        if (SPECIAL_CONST_P(err)) err = rb_eSyntaxError;
+        rb_exc_fatal(err);
+    }
 }
 
 #if 0