From 02e5761ed637c414c4415247df447c6a6a5a0999 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@des.dev>
Date: Fri, 4 Oct 2024 09:31:01 +0200
Subject: [PATCH] Mark onig_snprintf_with_pattern() as printf()-like.

This allows Oniguruma to build cleanly using gcc and clang with the
format-nonliteral warning enabled.
---
 src/regint.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/regint.h b/src/regint.h
index 9244879b..def361a3 100644
--- a/src/regint.h
+++ b/src/regint.h
@@ -61,6 +61,14 @@
 #endif
 #endif
 
+#ifndef ONIG_PRINTFLIKE
+#if defined(__clang__) || defined(__GNUC__)
+#define ONIG_PRINTFLIKE(x, y) __attribute__((format(printf, x, y)))
+#else
+#define ONIG_PRINTFLIKE(x, y)
+#endif
+#endif
+
 /* config */
 /* spec. config */
 #define USE_REGSET
@@ -945,7 +953,7 @@ struct re_pattern_buffer {
 extern void onig_add_end_call(void (*func)(void));
 extern void onig_warning(const char* s);
 extern UChar* onig_error_code_to_format P_((int code));
-extern void ONIG_VARIADIC_FUNC_ATTR onig_snprintf_with_pattern PV_((UChar buf[], int bufsize, OnigEncoding enc, UChar* pat, UChar* pat_end, const UChar *fmt, ...));
+extern void ONIG_VARIADIC_FUNC_ATTR ONIG_PRINTFLIKE(6, 7) onig_snprintf_with_pattern PV_((UChar buf[], int bufsize, OnigEncoding enc, UChar* pat, UChar* pat_end, const UChar *fmt, ...));
 extern int onig_compile P_((regex_t* reg, const UChar* pattern, const UChar* pattern_end, OnigErrorInfo* einfo));
 extern int onig_is_code_in_cc_len P_((int enclen, OnigCodePoint code, void* /* CClassNode* */ cc));
 extern RegexExt* onig_get_regex_ext(regex_t* reg);