[gtksourceview] testsuite: use G_REGEX_RAW with invalid UTF-8

[Christian Hergert <chergert src gnome org>]

commit 87e62bad1092ba795d8995ac27222e320fb1a14d
Author: Moody <mooodyhunter outlook com>
Date:   Thu Sep 29 15:01:04 2022 +0000

    testsuite: use G_REGEX_RAW with invalid UTF-8

 testsuite/test-regex.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/testsuite/test-regex.c b/testsuite/test-regex.c
index c1add0e9..1306f1c5 100644
--- a/testsuite/test-regex.c
+++ b/testsuite/test-regex.c
@@ -195,7 +195,8 @@ test_compare (void)
   compare_impl_regex_to_g_regex ("hello\nworld\n", "(.*\\n)*", compile, match);
 
   compare_impl_regex_to_g_regex ("&aa", "\\baa\\b", compile, match);
-  compare_impl_regex_to_g_regex ("\342\200\223aa", "\\baa\\b", compile, match);
+  /* this can be a invalid UTF-8 string if substring-ed, make glib think it's a raw string */
+  compare_impl_regex_to_g_regex ("\342\200\223aa", "\\baa\\b", compile | G_REGEX_RAW, match);
 
   compare_impl_regex_to_g_regex ("12\n", "(?<=1)23", compile, match);
   compare_impl_regex_to_g_regex ("\n23\n", "(?<=1)23", compile, match);