The format is not a literal but well defined.

1 files changed, 2 insertions, 0 deletions

diff --git a/regcomp.c b/regcomp.c
index cb905eb6da..a1784c7f53 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -17289,7 +17289,9 @@ S_put_range(pTHX_ SV *sv, UV start, const UV end, const bool allow_literals)
         format = (this_end < 256)
                  ? "\\x{%02"UVXf"}-\\x{%02"UVXf"}"
                  : "\\x{%04"UVXf"}-\\x{%04"UVXf"}";
+        GCC_DIAG_IGNORE(-Wformat-nonliteral);
         Perl_sv_catpvf(aTHX_ sv, format, start, this_end);
+        GCC_DIAG_RESTORE;
         break;
     }
 }