From f4cee8850dd06852ac87ab2c1cf85588ee52ad3d Mon Sep 17 00:00:00 2001
From: difcsi <zoltan.m@tuta.io>
Date: Fri, 14 Nov 2025 06:27:01 +0000
Subject: [PATCH] fix: vector OOB access causing assertion violation crashes

---
 include/srk31/closure.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/srk31/closure.hpp b/include/srk31/closure.hpp
index 287dbbf..274ed88 100644
--- a/include/srk31/closure.hpp
+++ b/include/srk31/closure.hpp
@@ -194,7 +194,7 @@ struct ffi_closure_s
 			/* ffi_abi abi */ FFI_DEFAULT_ABI,
 			/*unsigned int nargs */ p_atypes->size(),
 			/* ffi_type *rtype */ ffi_type_s<RetType>::t(),
-			/* ffi_type **atypes */ &(*p_atypes)[0]
+			/* ffi_type **atypes */ p_atypes->empty() ? nullptr : &(*p_atypes)[0]
 		);
 		if (status != FFI_OK) throw 1; // FIXME: better thing to throw (or return null?)
 		status = ffi_prep_closure(closure, &*p_cif, &the_fun<member_fun>, obj);
@@ -235,7 +235,7 @@ class myclass
 } o;
 
 int main(void)
-{
+{ffi_prep_cif
 	/* An ffi_closure is basically
 	 * char tramp[FFI_TRAMPOLINE_SIZE];
 	 * ffi_cif   *cif;