1 files changed, 20 insertions, 0 deletions

diff --git a/src/lj_debug.h b/src/lj_debug.h
index e00769ae..48e6a229 100644
--- a/src/lj_debug.h
+++ b/src/lj_debug.h
@@ -8,6 +8,24 @@
 
 #include "lj_obj.h"
 
+typedef struct lj_Debug {
+  /* Common fields. Must be in the same order as in lua.h. */
+  int event;
+  const char *name;
+  const char *namewhat;
+  const char *what;
+  const char *source;
+  int currentline;
+  int nups;
+  int linedefined;
+  int lastlinedefined;
+  char short_src[LUA_IDSIZE];
+  int i_ci;
+  /* Extended fields. Only valid if lj_debug_getinfo() is called with ext = 1.*/
+  int nparams;
+  int isvararg;
+} lj_Debug;
+
 LJ_FUNC cTValue *lj_debug_frame(lua_State *L, int level, int *size);
 LJ_FUNC BCLine LJ_FASTCALL lj_debug_line(GCproto *pt, BCPos pc);
 LJ_FUNC const char *lj_debug_uvname(GCproto *pt, uint32_t idx);
@@ -20,6 +38,8 @@ LJ_FUNC void lj_debug_shortname(char *out, GCstr *str);
 LJ_FUNC void lj_debug_addloc(lua_State *L, const char *msg,
                              cTValue *frame, cTValue *nextframe);
 LJ_FUNC void lj_debug_pushloc(lua_State *L, GCproto *pt, BCPos pc);
+LJ_FUNC int lj_debug_getinfo(lua_State *L, const char *what, lj_Debug *ar,
+                             int ext);
 
 /* Fixed internal variable names. */
 #define VARNAMEDEF(_) \