1 files changed, 8 insertions, 0 deletions

diff --git a/src/lj_lex.h b/src/lj_lex.h
index ee183b40..9bcd3cdb 100644
--- a/src/lj_lex.h
+++ b/src/lj_lex.h
@@ -32,6 +32,12 @@ TKDEF(TKENUM1, TKENUM2)
 
 typedef int LexToken;
 
+/* Combined bytecode ins/line. Only used during bytecode generation. */
+typedef struct BCInsLine {
+  BCIns ins;            /* Bytecode instruction. */
+  BCLine line;          /* Line number for this bytecode. */
+} BCInsLine;
+
 /* Lua lexer state. */
 typedef struct LexState {
   struct FuncState *fs; /* Current FuncState. Defined in lj_parse.c. */
@@ -53,6 +59,8 @@ typedef struct LexState {
   VarInfo *vstack;      /* Stack for names and extents of local variables. */
   MSize sizevstack;     /* Size of variable stack. */
   MSize vtop;           /* Top of variable stack. */
+  BCInsLine *bcstack;   /* Stack for bytecode instructions/line numbers. */
+  MSize sizebcstack;    /* Size of bytecode stack. */
   uint32_t level;       /* Syntactical nesting level. */
 } LexState;