File _service:obs_scm:backport-CVE-2019-16161.patch of Package ruby

From 00cc7e28a3ed54b3b512ef3b58ea737a57acf1f9 Mon Sep 17 00:00:00 2001
From: "K.Takata" <kentkt@csc.jp>
Date: Mon, 29 Jul 2019 20:15:26 +0900
Subject: [PATCH] Fix SEGV in onig_error_code_to_str() (Fix #132)
 
When onig_new(ONIG_SYNTAX_PERL) fails with ONIGERR_INVALID_GROUP_NAME,
onig_error_code_to_str() crashes.
onig_scan_env_set_error_string() should have been used when returning
ONIGERR_INVALID_GROUP_NAME.
---
 regparse.c | 6 +++++-
 testpy.py  | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)
 
diff -Naur a/regparse.c b/regparse.c
--- a/regparse.c	2020-08-06 14:39:34.822618517 -0400
+++ b/regparse.c	2020-08-06 14:42:49.332618517 -0400
@@ -3891,7 +3891,11 @@
 
 	  if (c == 'R' || c == '0') {
 	    PINC;   /* skip 'R' / '0' */
-	    if (!PPEEK_IS(')')) return ONIGERR_INVALID_GROUP_NAME;
+	    if (!PPEEK_IS(')')) {
+	      r = ONIGERR_INVALID_GROUP_NAME;
+	      onig_scan_env_set_error_string(env, r, p - 1, p + 1);
+	      return r;
+	    }
 	    PINC;   /* skip ')' */
 	    name_end = name = p;
 	    gnum = 0;