1 files changed, 11 insertions, 1 deletions

diff --git a/src/lj_buf.h b/src/lj_buf.h
index b97d55ef..4ace2685 100644
--- a/src/lj_buf.h
+++ b/src/lj_buf.h
@@ -55,6 +55,7 @@ typedef struct SBufExt {
 #define sbufisext(sb)           (sbufflag((sb)) & SBUF_FLAG_EXT)
 #define sbufiscow(sb)           (sbufflag((sb)) & SBUF_FLAG_COW)
 #define sbufisborrow(sb)        (sbufflag((sb)) & SBUF_FLAG_BORROW)
+#define sbufiscoworborrow(sb)   (sbufflag((sb)) & (SBUF_FLAG_COW|SBUF_FLAG_BORROW))
 #define sbufX(sb) \
   (lj_assertG_(G(sbufL(sb)), sbufisext(sb), "not an SBufExt"), (SBufExt *)(sb))
 #define setsbufflag(sb, flag)   (setmrefu((sb)->L, (flag)))
@@ -143,15 +144,24 @@ static LJ_AINLINE void lj_bufx_reset(SBufExt *sbx)
 
 static LJ_AINLINE void lj_bufx_free(lua_State *L, SBufExt *sbx)
 {
-  if (!sbufiscow(sbx)) lj_mem_free(G(L), sbx->b, sbufsz(sbx));
+  if (!sbufiscoworborrow(sbx)) lj_mem_free(G(L), sbx->b, sbufsz(sbx));
   setsbufXL(sbx, L, SBUF_FLAG_EXT);
   setgcrefnull(sbx->cowref);
   sbx->r = sbx->w = sbx->b = sbx->e = NULL;
 }
 
+#if LJ_HASBUFFER && LJ_HASJIT
+LJ_FUNC void lj_bufx_set(SBufExt *sbx, const char *p, MSize len, GCobj *o);
+#if LJ_HASFFI
+LJ_FUNC MSize LJ_FASTCALL lj_bufx_more(SBufExt *sbx, MSize sz);
+#endif
+#endif
+
 /* Low-level buffer put operations */
 LJ_FUNC SBuf *lj_buf_putmem(SBuf *sb, const void *q, MSize len);
+#if LJ_HASJIT || LJ_HASFFI
 LJ_FUNC SBuf * LJ_FASTCALL lj_buf_putchar(SBuf *sb, int c);
+#endif
 LJ_FUNC SBuf * LJ_FASTCALL lj_buf_putstr(SBuf *sb, GCstr *s);
 
 static LJ_AINLINE char *lj_buf_wmem(char *p, const void *q, MSize len)