From 1994a2453e91beafcc78e12051b44ccc7a41bf7b Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Wed, 19 Feb 2014 22:05:34 +0100
Subject: [PATCH] FFI: Disallow nested VLS.

---
 src/lj_cparse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lj_cparse.c b/src/lj_cparse.c
index 767ac179..6ffe16a2 100644
--- a/src/lj_cparse.c
+++ b/src/lj_cparse.c
@@ -1258,7 +1258,7 @@ static void cp_struct_layout(CPState *cp, CTypeID sid, CTInfo sattr)
       sinfo |= (info & (CTF_QUAL|CTF_VLA));  /* Merge pseudo-qualifiers. */
 
       /* Check for size overflow and determine alignment. */
-      if (sz >= 0x20000000u || bofs + csz < bofs) {
+      if (sz >= 0x20000000u || bofs + csz < bofs || (info & CTF_VLA)) {
 	if (!(sz == CTSIZE_INVALID && ctype_isarray(info) &&
 	      !(sinfo & CTF_UNION)))
 	  cp_err(cp, LJ_ERR_FFI_INVSIZE);
-- 
2.11.4.GIT