Merging upstream version 4.2.4.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

17 files changed, 160 insertions, 95 deletions

diff --git a/epan/wslua/init_wslua.c b/epan/wslua/init_wslua.c
index 4009326..9217a4a 100644
--- a/epan/wslua/init_wslua.c
+++ b/epan/wslua/init_wslua.c
@@ -969,7 +969,7 @@ add_table_symbol(const char *table, const char *name, int value)
     lua_getglobal(L, table);
     /* Set symbol in table. */
     lua_pushstring(L, name);
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
     lua_settable(L, -3);
     /* Pop table from stack. */
     lua_pop(L, 1);
@@ -979,7 +979,7 @@ static void
 add_global_symbol(const char *name, int value)
 {
     /* Set symbol in global environment. */
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
     lua_setglobal(L, name);
 }
 
@@ -988,7 +988,7 @@ add_pi_severity_symbol(const char *name, int value)
 {
     lua_getglobal(L, WSLUA_EXPERT_TABLE);
     lua_getfield(L, -1, WSLUA_EXPERT_SEVERITY_TABLE);
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
     lua_setfield(L, -2, name);
     lua_pop(L, 2);
 }
@@ -998,7 +998,7 @@ add_pi_group_symbol(const char *name, int value)
 {
     lua_getglobal(L, WSLUA_EXPERT_TABLE);
     lua_getfield(L, -1, WSLUA_EXPERT_GROUP_TABLE);
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
     lua_setfield(L, -2, name);
     lua_pop(L, 2);
 }
@@ -1007,7 +1007,7 @@ static void
 add_menu_group_symbol(const char *name, int value)
 {
     /* Set symbol in global environment. */
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
     char *str = g_strdup(name);
     char *s = strstr(str, "_GROUP_");
     if (s == NULL)
diff --git a/epan/wslua/lrexlib/pcre2/lpcre2.c b/epan/wslua/lrexlib/pcre2/lpcre2.c
index f24cbec..ee1926f 100644
--- a/epan/wslua/lrexlib/pcre2/lpcre2.c
+++ b/epan/wslua/lrexlib/pcre2/lpcre2.c
@@ -432,7 +432,7 @@ static int Lpcre2_jit_compile (lua_State *L) {
 #define SET_INFO_FIELD(L,ud,what,name,valtype) { \
   valtype val; \
   if (0 == pcre2_pattern_info (ud->pr, what, &val)) { \
-    lua_pushnumber (L, val); \
+    lua_pushinteger (L, val); \
     lua_setfield (L, -2, name); \
   } \
 }
diff --git a/epan/wslua/lua_bitop.c b/epan/wslua/lua_bitop.c
index 2f3c3ee..52be189 100644
--- a/epan/wslua/lua_bitop.c
+++ b/epan/wslua/lua_bitop.c
@@ -24,7 +24,7 @@ typedef uint32_t UBits;
 
 typedef union {
   lua_Number n;
-#ifdef LUA_NUMBER_DOUBLE
+#if defined(LUA_NUMBER_DOUBLE) || defined(LUA_FLOAT_DOUBLE)
   uint64_t b;
 #else
   UBits b;
@@ -41,24 +41,25 @@ static UBits barg(lua_State *L, int idx)
 #else
   bn.n = luaL_checknumber(L, idx);
 #endif
-#if defined(LUA_NUMBER_DOUBLE)
+#if defined(LUA_NUMBER_DOUBLE) || defined(LUA_FLOAT_DOUBLE)
   bn.n += 6755399441055744.0;  /* 2^52+2^51 */
 #ifdef SWAPPED_DOUBLE
   b = (UBits)(bn.b >> 32);
 #else
   b = (UBits)bn.b;
 #endif
-#elif defined(LUA_NUMBER_INT) || defined(LUA_NUMBER_LONG) || \
-      defined(LUA_NUMBER_LONGLONG) || defined(LUA_NUMBER_LONG_LONG) || \
-      defined(LUA_NUMBER_LLONG)
+#elif defined(LUA_NUMBER_INT)       || defined(LUA_INT_INT) || \
+      defined(LUA_NUMBER_LONG)      || defined(LUA_INT_LONG) || \
+      defined(LUA_NUMBER_LONGLONG)  || defined(LUA_INT_LONGLONG) || \
+      defined(LUA_NUMBER_LONG_LONG) || defined(LUA_NUMBER_LLONG)
   if (sizeof(UBits) == sizeof(lua_Number))
     b = bn.b;
   else
     b = (UBits)(SBits)bn.n;
-#elif defined(LUA_NUMBER_FLOAT)
+#elif defined(LUA_NUMBER_FLOAT) || defined(LUA_FLOAT_FLOAT)
 #error "A 'float' lua_Number type is incompatible with this library"
 #else
-#error "Unknown number type, check LUA_NUMBER_* in luaconf.h"
+#error "Unknown number type, check LUA_NUMBER_*, LUA_FLOAT_*, LUA_INT_* in luaconf.h"
 #endif
 #if LUA_VERSION_NUM < 502
   if (b == 0 && !lua_isnumber(L, idx)) {
@@ -69,7 +70,11 @@ static UBits barg(lua_State *L, int idx)
 }
 
 /* Return bit type. */
+#if LUA_VERSION_NUM < 503
 #define BRET(b)  lua_pushnumber(L, (lua_Number)(SBits)(b)); return 1;
+#else
+#define BRET(b)  lua_pushinteger(L, (lua_Integer)(SBits)(b)); return 1;
+#endif
 
 static int bit_tobit(lua_State *L) { BRET(barg(L, 1)) }
 static int bit_bnot(lua_State *L) { BRET(~barg(L, 1)) }
@@ -141,11 +146,15 @@ static const struct luaL_Reg bit_funcs[] = {
 LUALIB_API int luaopen_bit(lua_State *L)
 {
   UBits b;
+#if LUA_VERSION_NUM < 503
   lua_pushnumber(L, (lua_Number)1437217655L);
+#else
+  lua_pushinteger(L, (lua_Integer)1437217655L);
+#endif
   b = barg(L, -1);
   if (b != (UBits)1437217655L || BAD_SAR) {  /* Perform a simple self-test. */
     const char *msg = "compiled with incompatible luaconf.h";
-#ifdef LUA_NUMBER_DOUBLE
+#if defined(LUA_NUMBER_DOUBLE) || defined(LUA_FLOAT_DOUBLE)
 #ifdef _WIN32
     if (b == (UBits)1610612736L)
       msg = "use D3DCREATE_FPU_PRESERVE with DirectX";
diff --git a/epan/wslua/make-taps.py b/epan/wslua/make-taps.py
index 14c5a39..ed677ff 100755
--- a/epan/wslua/make-taps.py
+++ b/epan/wslua/make-taps.py
@@ -34,18 +34,18 @@ def get_tap_info(tap_name, header_file, struct_name, enum_types):
     types = {
         'gchar[]': 'lua_pushstring(L,(const char*)v->STR);',
         'gchar*': 'lua_pushstring(L,(const char*)v->STR);',
-        'guint': 'lua_pushnumber(L,(lua_Number)v->STR);',
-        'guint8': 'lua_pushnumber(L,(lua_Number)v->STR);',
-        'guint16': 'lua_pushnumber(L,(lua_Number)v->STR);',
-        'guint32': 'lua_pushnumber(L,(lua_Number)v->STR);',
-        'gint': 'lua_pushnumber(L,(lua_Number)v->STR);',
-        'gint8': 'lua_pushnumber(L,(lua_Number)v->STR);',
-        'gint16': 'lua_pushnumber(L,(lua_Number)v->STR);',
-        'gint32': 'lua_pushnumber(L,(lua_Number)v->STR);',
+        'guint': 'lua_pushinteger(L,(lua_Integer)v->STR);',
+        'guint8': 'lua_pushinteger(L,(lua_Integer)v->STR);',
+        'guint16': 'lua_pushinteger(L,(lua_Integer)v->STR);',
+        'guint32': 'lua_pushinteger(L,(lua_Integer)v->STR);',
+        'gint': 'lua_pushinteger(L,(lua_Integer)v->STR);',
+        'gint8': 'lua_pushinteger(L,(lua_Integer)v->STR);',
+        'gint16': 'lua_pushinteger(L,(lua_Integer)v->STR);',
+        'gint32': 'lua_pushinteger(L,(lua_Integer)v->STR);',
         'gboolean': 'lua_pushboolean(L,(int)v->STR);',
         'address': '{ Address a = (Address)g_malloc(sizeof(address)); copy_address(a, &(v->STR)); pushAddress(L,a); }',
         'address*': '{ Address a = (Address)g_malloc(sizeof(address)); copy_address(a, v->STR); pushAddress(L,a); }',
-        'int': 'lua_pushnumber(L,(lua_Number)v->STR);',
+        'int': 'lua_pushinteger(L,(lua_Integer)v->STR);',
         'nstime_t': 'lua_pushnumber(L,(lua_Number)nstime_to_sec(&(v->STR)));',
         'nstime_t*': 'lua_pushnumber(L,(lua_Number)nstime_to_sec(v->STR));',
     }
@@ -79,7 +79,7 @@ def get_tap_info(tap_name, header_file, struct_name, enum_types):
     for enum in enum_types:
         m = re.search(fr'typedef\s+enum[^{{]*{{([^}}]*)}}[\s\n]*{enum}[\s\n]*;', buf, flags=re.DOTALL)
         if m:
-            types[enum] = f'lua_pushnumber(L,(lua_Number)v->STR); /* {enum} */'
+            types[enum] = f'lua_pushinteger(L,(lua_Integer)v->STR); /* {enum} */'
             econsts = m.group(1).splitlines()
             econsts = [re.sub(r'\s+', '', item) for item in econsts]
             econsts = [re.sub(',', '', item) for item in econsts]
@@ -183,9 +183,9 @@ def main():
         c_body += f'\n\t/*\n\t * {enum}\n\t */\n\tlua_newtable(L);\n'
         for econst in enums[enum]:
             c_body += f'''\
-	lua_pushnumber(L,(lua_Number){econst});
+	lua_pushinteger(L,(lua_Integer){econst});
 	lua_setglobal(L,"{econst}");
-	lua_pushnumber(L,(lua_Number){econst});
+	lua_pushinteger(L,(lua_Integer){econst});
 	lua_pushstring(L,"{econst}");
 	lua_settable(L,-3);
 '''
diff --git a/epan/wslua/wslua_byte_array.c b/epan/wslua/wslua_byte_array.c
index 6e6ae30..b044991 100644
--- a/epan/wslua/wslua_byte_array.c
+++ b/epan/wslua/wslua_byte_array.c
@@ -214,7 +214,7 @@ WSLUA_METHOD ByteArray_get_index(lua_State* L) {
         luaL_argerror(L,2,"index out of range");
         return 0;
     }
-    lua_pushnumber(L,ba->data[idx]);
+    lua_pushinteger(L,ba->data[idx]);
 
     WSLUA_RETURN(1); /* The value [0-255] of the byte. */
 }
@@ -255,7 +255,7 @@ WSLUA_METHOD ByteArray_le_int(lua_State* L) {
         value |= (guint8)ba->data[offset + i];
     }
 
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
 
     WSLUA_RETURN(1); /* The value of the little endian encoded signed integer beginning at given offset with given length. */
 }
@@ -337,7 +337,7 @@ WSLUA_METHOD ByteArray_le_uint(lua_State* L) {
         value |= (guint8)ba->data[offset + i];
     }
 
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
 
     WSLUA_RETURN(1); /* The value of the little endian encoded unsigned integer beginning at given offset with given length. */
 }
@@ -419,7 +419,7 @@ WSLUA_METHOD ByteArray_int(lua_State* L) {
         value |= (guint8)ba->data[offset + i];
     }
 
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
 
     WSLUA_RETURN(1); /* The value of the big endian encoded 32 bit signed integer beginning at given offset with given length. */
 }
@@ -501,7 +501,7 @@ WSLUA_METHOD ByteArray_uint(lua_State* L) {
         value |= (guint8)ba->data[offset + i];
     }
 
-    lua_pushnumber(L, value);
+    lua_pushinteger(L, value);
 
     WSLUA_RETURN(1); /* The value of the big endian encoded 32 bit unsigned integer beginning at given offset with given length. */
 }
@@ -551,7 +551,7 @@ WSLUA_METHOD ByteArray_len(lua_State* L) {
     /* Obtain the length of a <<lua_class_ByteArray,`ByteArray`>>. */
     ByteArray ba = checkByteArray(L,1);
 
-    lua_pushnumber(L,(lua_Number)ba->len);
+    lua_pushinteger(L,(lua_Integer)ba->len);
 
     WSLUA_RETURN(1); /* The length of the <<lua_class_ByteArray,`ByteArray`>>. */
 }
diff --git a/epan/wslua/wslua_dissector.c b/epan/wslua/wslua_dissector.c
index 5b18930..6181ffb 100644
--- a/epan/wslua/wslua_dissector.c
+++ b/epan/wslua/wslua_dissector.c
@@ -107,7 +107,7 @@ WSLUA_METHOD Dissector_call(lua_State* L) {
        are normal conditions and possibly don't need the Lua traceback. */
     if (error) { WSLUA_ERROR(Dissector_call,error); }
 
-    lua_pushnumber(L,(lua_Number)len);
+    lua_pushinteger(L,(lua_Integer)len);
     WSLUA_RETURN(1); /* Number of bytes dissected.  Note that some dissectors always return number of bytes in incoming buffer, so be aware. */
 }
 
@@ -618,7 +618,7 @@ WSLUA_METHOD DissectorTable_try (lua_State *L) {
 
     if (error) { WSLUA_ERROR(DissectorTable_try,error); }
 
-    lua_pushnumber(L,(lua_Number)len);
+    lua_pushinteger(L,(lua_Integer)len);
     WSLUA_RETURN(1); /* Number of bytes dissected.  Note that some dissectors always return number of bytes in incoming buffer, so be aware. */
 }
 
diff --git a/epan/wslua/wslua_field.c b/epan/wslua/wslua_field.c
index 17db197..d7d3e9d 100644
--- a/epan/wslua/wslua_field.c
+++ b/epan/wslua/wslua_field.c
@@ -50,7 +50,7 @@ WSLUA_METAMETHOD FieldInfo__len(lua_State* L) {
        */
     FieldInfo fi = checkFieldInfo(L,1);
 
-    lua_pushnumber(L,fi->ws_fi->length);
+    lua_pushinteger(L,fi->ws_fi->length);
     return 1;
 }
 
@@ -61,7 +61,7 @@ WSLUA_METAMETHOD FieldInfo__unm(lua_State* L) {
        */
     FieldInfo fi = checkFieldInfo(L,1);
 
-    lua_pushnumber(L,fi->ws_fi->start);
+    lua_pushinteger(L,fi->ws_fi->start);
     return 1;
 }
 
@@ -91,13 +91,13 @@ WSLUA_METAMETHOD FieldInfo__call(lua_State* L) {
         case FT_UINT24:
         case FT_UINT32:
         case FT_FRAMENUM:
-                lua_pushnumber(L,(lua_Number)(fvalue_get_uinteger(fi->ws_fi->value)));
+                lua_pushinteger(L,(lua_Integer)(fvalue_get_uinteger(fi->ws_fi->value)));
                 return 1;
         case FT_INT8:
         case FT_INT16:
         case FT_INT24:
         case FT_INT32:
-                lua_pushnumber(L,(lua_Number)(fvalue_get_sinteger(fi->ws_fi->value)));
+                lua_pushinteger(L,(lua_Integer)(fvalue_get_sinteger(fi->ws_fi->value)));
                 return 1;
         case FT_FLOAT:
         case FT_DOUBLE:
@@ -268,7 +268,7 @@ static int FieldInfo_get_type(lua_State* L) {
     FieldInfo fi = checkFieldInfo(L,1);
 
     if (fi->ws_fi->hfinfo) {
-        lua_pushnumber(L, fi->ws_fi->hfinfo->type);
+        lua_pushinteger(L, fi->ws_fi->hfinfo->type);
     }
     else {
         lua_pushnil(L);
@@ -710,7 +710,7 @@ static int Field_get_type(lua_State* L) {
     Field f = checkField(L,1);
     header_field_info* hfinfo = NULL;
 
-    GET_HFINFO_MEMBER(lua_pushnumber, type);
+    GET_HFINFO_MEMBER(lua_pushinteger, type);
 
     return 1;
 }
diff --git a/epan/wslua/wslua_file.c b/epan/wslua/wslua_file.c
index 2621a99..ff74760 100644
--- a/epan/wslua/wslua_file.c
+++ b/epan/wslua/wslua_file.c
@@ -152,7 +152,7 @@ static int File_read_number (lua_State *L, FILE_T ft) {
     buff[buff_end] = '\0';
 
     if (buff_end > 0 && num_digits > 0 && sscanf(buff, "%lf", &d) == 1) {
-        lua_pushnumber(L, d);
+        lua_pushinteger(L, d);
         return 1;
     }
     else {
@@ -338,7 +338,11 @@ WSLUA_METHOD File_seek(lua_State* L) {
     static const char *const modenames[] = {"set", "cur", "end", NULL};
     File f = checkFile(L,1);
     int op = luaL_checkoption(L, 2, "cur", modenames);
+#if LUA_VERSION_NUM >= 503
+    gint64 offset = (gint64)luaL_optinteger(L, 3, 0);
+#else
     gint64 offset = (gint64) luaL_optlong(L, 3, 0);
+#endif
     int err;
 
 
@@ -351,7 +355,7 @@ WSLUA_METHOD File_seek(lua_State* L) {
             return 2;
         }
 
-        lua_pushnumber(L, (lua_Number)(file_tell(f->file)));
+        lua_pushinteger(L, (lua_Integer)(file_tell(f->file)));
     }
     else {
         offset = wtap_dump_file_seek(f->wdh, offset, mode[op], &err);
@@ -370,7 +374,7 @@ WSLUA_METHOD File_seek(lua_State* L) {
             return 2;
         }
 
-        lua_pushnumber(L, (lua_Number)(offset));
+        lua_pushinteger(L, (lua_Integer)(offset));
     }
 
     WSLUA_RETURN(1); /* The current file cursor position as a number. */
diff --git a/epan/wslua/wslua_file_handler.c b/epan/wslua/wslua_file_handler.c
index f0c9ad8..47f72d4 100644
--- a/epan/wslua/wslua_file_handler.c
+++ b/epan/wslua/wslua_file_handler.c
@@ -326,7 +326,7 @@ wslua_filehandler_seek_read_packet(wtap *wth, gint64 seek_off, wtap_rec *rec, Bu
     fp = push_File(L, wth->random_fh);
     fc = push_CaptureInfo(L, wth, FALSE);
     fi = push_FrameInfo(L, rec, buf);
-    lua_pushnumber(L, (lua_Number)seek_off);
+    lua_pushinteger(L, (lua_Integer)seek_off);
 
     switch ( lua_pcall(L,4,1,1) ) {
         case 0:
@@ -474,7 +474,7 @@ wslua_filehandler_can_write_encap(int encap, void* data)
 
     INIT_FILEHANDLER_ROUTINE(can_write_encap,WTAP_ERR_UNWRITABLE_ENCAP,NULL,NULL);
 
-    lua_pushnumber(L, encap);
+    lua_pushinteger(L, encap);
 
     switch ( lua_pcall(L,1,1,1) ) {
         case 0:
@@ -842,7 +842,7 @@ WSLUA_FUNCTION wslua_register_filehandler(lua_State* L) {
     fh->registered = TRUE;
     registered_file_handlers = g_slist_prepend(registered_file_handlers, fh);
 
-    lua_pushnumber(L, fh->file_type);
+    lua_pushinteger(L, fh->file_type);
 
     WSLUA_RETURN(1); /* the new type number for this file reader/write */
 }
@@ -1207,7 +1207,7 @@ WSLUA_ATTRIBUTE_GET(FileHandler,supported_comment_types,{ \
             break;\
         } \
     } \
-    lua_pushnumber(L, (lua_Number)supported_comment_types); \
+    lua_pushinteger(L, (lua_Integer)supported_comment_types); \
 });
 WSLUA_ATTRIBUTE_SET(FileHandler,supported_comment_types, { \
     guint supported_comment_types; \
diff --git a/epan/wslua/wslua_frame_info.c b/epan/wslua/wslua_frame_info.c
index 401abd7..72701d6 100644
--- a/epan/wslua/wslua_frame_info.c
+++ b/epan/wslua/wslua_frame_info.c
@@ -89,7 +89,7 @@ WSLUA_METHOD FrameInfo_read_data(lua_State* L) {
             g_free(err_info); /* is this right? */
         }
         else lua_pushnil(L);
-        lua_pushnumber(L, err);
+        lua_pushinteger(L, err);
         return 3;
     }
 
@@ -120,7 +120,7 @@ static int FrameInfo_get_comment (lua_State* L) {
     lua_createtable(L, n_comments, 0);
     for (i = 0; i < n_comments; i++) {
         comment = NULL;
-        lua_pushnumber(L, i+1);
+        lua_pushinteger(L, i+1);
         if (WTAP_OPTTYPE_SUCCESS ==
                 wtap_block_get_nth_string_option_value(block, OPT_COMMENT, i, &comment)) {
             lua_pushstring(L, comment);
@@ -371,7 +371,7 @@ WSLUA_METHOD FrameInfoConst_write_data(lua_State* L) {
     if (!wtap_dump_file_write(fh->wdh, fi->pd, (size_t)(len), &err)) {
         lua_pushboolean(L, FALSE);
         lua_pushfstring(L, "FrameInfoConst write_data() error: %s", g_strerror(err));
-        lua_pushnumber(L, err);
+        lua_pushinteger(L, err);
         return 3;
     }
 
@@ -403,7 +403,7 @@ static int FrameInfoConst_get_comment (lua_State* L) {
     lua_createtable(L, n_comments, 0);
     for (i = 0; i < n_comments; i++) {
         comment = NULL;
-        lua_pushnumber(L, i+1);
+        lua_pushinteger(L, i+1);
         if (WTAP_OPTTYPE_SUCCESS ==
                 wtap_block_get_nth_string_option_value(block, OPT_COMMENT, i, &comment)) {
             lua_pushstring(L, comment);
diff --git a/epan/wslua/wslua_pinfo.c b/epan/wslua/wslua_pinfo.c
index a735d60..3e60715 100644
--- a/epan/wslua/wslua_pinfo.c
+++ b/epan/wslua/wslua_pinfo.c
@@ -308,7 +308,7 @@ static int Pinfo_get_match(lua_State *L) {
     if (pinfo->ws_pinfo->match_string) {
         lua_pushstring(L,pinfo->ws_pinfo->match_string);
     } else {
-        lua_pushnumber(L,(lua_Number)(pinfo->ws_pinfo->match_uint));
+        lua_pushinteger(L,(lua_Integer)(pinfo->ws_pinfo->match_uint));
     }
 
     return 1;
diff --git a/epan/wslua/wslua_pref.c b/epan/wslua/wslua_pref.c
index 234170d..3d6ed54 100644
--- a/epan/wslua/wslua_pref.c
+++ b/epan/wslua/wslua_pref.c
@@ -515,9 +515,9 @@ WSLUA_METAMETHOD Prefs__index(lua_State* L) {
         if ( g_str_equal(prefs_p->name,name) ) {
             switch (prefs_p->type) {
                 case PREF_BOOL: lua_pushboolean(L, prefs_p->value.b); break;
-                case PREF_UINT: lua_pushnumber(L,(lua_Number)prefs_p->value.u); break;
+                case PREF_UINT: lua_pushinteger(L,(lua_Integer)prefs_p->value.u); break;
                 case PREF_STRING: lua_pushstring(L,prefs_p->value.s); break;
-                case PREF_ENUM: lua_pushnumber(L,(lua_Number)prefs_p->value.e); break;
+                case PREF_ENUM: lua_pushinteger(L,(lua_Integer)prefs_p->value.e); break;
                 case PREF_RANGE:
                     {
                     char *push_str = range_convert_range(NULL, prefs_p->value.r);
diff --git a/epan/wslua/wslua_proto.c b/epan/wslua/wslua_proto.c
index 363975b..92a1d19 100644
--- a/epan/wslua/wslua_proto.c
+++ b/epan/wslua/wslua_proto.c
@@ -444,7 +444,33 @@ static int Proto_set_fields(lua_State* L) {
     if( lua_istable(L,NEW_TABLE)) {
         for (lua_pushnil(L); lua_next(L, NEW_TABLE); ) {
             if (isProtoField(L,5)) {
-                luaL_ref(L,FIELDS_TABLE);
+                /* luaL_ref returns a reference. lua_next will return not
+                 * just occupied entries in the table, but also references
+                 * used to store unused/deleted entries in the hash table
+                 * so that they can be reused without reallocation. Those
+                 * will have a lua_Number as their value. The values form
+                 * a linked list of available indicies, starting with the
+                 * head at index 3 (LUA_RIDX_LAST + 1) in Lua 5.4 and index
+                 * 0 in earlier versions. (Since arrays are 1-indexed, this
+                 * is mostly invisible in Lua 5.3 and earlier so long as
+                 * nothing has been deleted.)
+                 *
+                 * Perhaps the assumption is that no one wants to use a
+                 * hash table to store numbers anyway? This also means
+                 * that for any table with 2 or more real entries, the
+                 * length operator # *includes* the freelist and cannot
+                 * be trusted.
+                 *
+                 * If we wanted to only check entries we knew were valid,
+                 * we could save this reference.
+                 *
+                 * This also means that our checks below on registration
+                 * and deregistration that the table entries are ProtoFields
+                 * are less useful, because we do now expect some numbers
+                 * in the table. Hopefully the check on insert here obviates
+                 * needing to check there.
+                 */
+                /* int ref = */ luaL_ref(L,FIELDS_TABLE);
             } else if (! lua_isnil(L,5) ) {
                 return luaL_error(L,"only ProtoFields should be in the table");
             }
@@ -457,6 +483,7 @@ static int Proto_set_fields(lua_State* L) {
         return luaL_error(L,"either a ProtoField or an array of protofields");
     }
 
+    /* XXX - I don't think this is necessary. */
     lua_pushvalue(L, 3);
 
     return 1;
@@ -573,6 +600,11 @@ ProtoField wslua_is_field_available(lua_State* L, const char* field_abbr) {
 
         lua_pushnil(L);
         while (lua_next(L, -2)) {
+            if (lua_type(L, -1) == LUA_TNUMBER) {
+                /* part of free reference linked list, ignore */
+                lua_pop(L, 1); /* table value */
+                continue;
+            }
             ProtoField f = checkProtoField(L, -1);
             if (strcmp(field_abbr, f->abbrev) == 0) {
                 /* found! */
@@ -632,6 +664,10 @@ int wslua_deregister_protocols(lua_State* L) {
         /* for each registered ProtoField do... */
         lua_rawgeti(L, LUA_REGISTRYINDEX, proto->fields);
         for (lua_pushnil(L); lua_next(L, -2); lua_pop(L, 1)) {
+            if (lua_type(L, -1) == LUA_TNUMBER) {
+                /* part of free reference linked list, ignore */
+                continue;
+            }
             ProtoField f = checkProtoField(L, -1);
 
             /* Memory ownership was previously transferred to epan in Proto_commit */
@@ -647,6 +683,10 @@ int wslua_deregister_protocols(lua_State* L) {
         /* for each registered ProtoExpert do... */
         lua_rawgeti(L, LUA_REGISTRYINDEX, proto->expert_info_table_ref);
         for (lua_pushnil(L); lua_next(L, -2); lua_pop(L, 1)) {
+            if (lua_type(L, -1) == LUA_TNUMBER) {
+                /* part of free reference linked list, ignore */
+                continue;
+            }
             ProtoExpert pe = checkProtoExpert(L,-1);
 
             /* Memory ownership was previously transferred to epan in Proto_commit */
@@ -708,6 +748,10 @@ int Proto_commit(lua_State* L) {
 
         /* for each ProtoField in the Lua table do... */
         for (lua_pushnil(L); lua_next(L, 4); lua_pop(L, 1)) {
+            if (lua_type(L, -1) == LUA_TNUMBER) {
+                /* part of free reference linked list, ignore */
+                continue;
+            }
             ProtoField f = checkProtoField(L,6);
             hf_register_info hfri = { NULL, { NULL, NULL, FT_NONE, 0, NULL, 0, NULL, HFILL } };
             ettp = &(f->ett);
@@ -744,6 +788,10 @@ int Proto_commit(lua_State* L) {
 
         /* for each ProtoExpert in the Lua table do... */
         for (lua_pushnil(L); lua_next(L, 4); lua_pop(L, 1)) {
+            if (lua_type(L, -1) == LUA_TNUMBER) {
+                /* part of free reference linked list, ignore */
+                continue;
+            }
             ProtoExpert e = checkProtoExpert(L,6);
             ei_register_info eiri = { NULL, { NULL, 0, 0, NULL, EXPFILL } };
 
diff --git a/epan/wslua/wslua_struct.c b/epan/wslua/wslua_struct.c
index 7d62dc0..440a090 100644
--- a/epan/wslua/wslua_struct.c
+++ b/epan/wslua/wslua_struct.c
@@ -410,7 +410,7 @@ WSLUA_CONSTRUCTOR Struct_pack (lua_State *L) {
  * given endianness and size. If the integer type is signed, this makes
  * the Lua number be +/- correctly as well.
  */
-static lua_Number getinteger (const gchar *buff, int endian,
+static lua_Integer getinteger (const gchar *buff, int endian,
                         int issigned, int size) {
   Uinttype l = 0;
   int i;
@@ -427,12 +427,12 @@ static lua_Number getinteger (const gchar *buff, int endian,
     }
   }
   if (!issigned)
-    return (lua_Number)l;
+    return (lua_Integer)l;
   else {  /* signed format */
     Uinttype mask = (Uinttype)(~((Uinttype)0)) << (size*8 - 1);
     if (l & mask)  /* negative value? */
       l |= mask;  /* signal extension */
-    return (lua_Number)(Inttype)l;
+    return (lua_Integer)(Inttype)l;
   }
 }
 
@@ -470,8 +470,8 @@ WSLUA_CONSTRUCTOR Struct_unpack (lua_State *L) {
       case 'b': case 'B': case 'h': case 'H':
       case 'l': case 'L': case 'T': case 'i':  case 'I': {  /* integer types */
         int issigned = g_ascii_islower(opt);
-        lua_Number res = getinteger(data+pos, h.endian, issigned, (int)size);
-        lua_pushnumber(L, res);
+        lua_Integer res = getinteger(data+pos, h.endian, issigned, (int)size);
+        lua_pushinteger(L, res);
         break;
       }
       case 'e': {
diff --git a/epan/wslua/wslua_tree.c b/epan/wslua/wslua_tree.c
index 503b8b7..5d8dc7c 100644
--- a/epan/wslua/wslua_tree.c
+++ b/epan/wslua/wslua_tree.c
@@ -123,7 +123,7 @@ try_add_packet_field(lua_State *L, TreeItem tree_item, TvbRange tvbr, const int
                 item = proto_tree_add_item_ret_int(tree_item->tree, hfid, tvbr->tvb->ws_tvb,
                                                 tvbr->offset, tvbr->len, encoding,
                                                 &ret);
-                lua_pushnumber(L, (lua_Number)ret);
+                lua_pushinteger(L, (lua_Integer)ret);
                 lua_pushinteger(L, tvbr->offset + tvbr->len);
             }
             break;
@@ -152,7 +152,7 @@ try_add_packet_field(lua_State *L, TreeItem tree_item, TvbRange tvbr, const int
                 item = proto_tree_add_item_ret_uint(tree_item-> tree, hfid, tvbr->tvb->ws_tvb,
                                                     tvbr->offset, tvbr->len, encoding,
                                                     &ret);
-                lua_pushnumber(L, (lua_Number)ret);
+                lua_pushinteger(L, (lua_Integer)ret);
                 lua_pushinteger(L, tvbr->offset + tvbr->len);
             }
             break;
@@ -502,7 +502,7 @@ static int TreeItem_add_item_any(lua_State *L, gboolean little_endian) {
             switch(type) {
                 case FT_PROTOCOL:
                     item = proto_tree_add_item(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,ENC_NA);
-                    lua_pushnumber(L,0);
+                    lua_pushinteger(L,0);
                     lua_insert(L,1);
                     break;
                 case FT_BOOLEAN:
diff --git a/epan/wslua/wslua_tvb.c b/epan/wslua/wslua_tvb.c
index 7951c7d..f315e83 100644
--- a/epan/wslua/wslua_tvb.c
+++ b/epan/wslua/wslua_tvb.c
@@ -135,7 +135,7 @@ WSLUA_METHOD Tvb_reported_len(lua_State* L) {
     /* Obtain the reported length (length on the network) of a <<lua_class_Tvb,`Tvb`>>. */
     Tvb tvb = checkTvb(L,1);
 
-    lua_pushnumber(L,tvb_reported_length(tvb->ws_tvb));
+    lua_pushinteger(L,tvb_reported_length(tvb->ws_tvb));
     WSLUA_RETURN(1); /* The reported length of the <<lua_class_Tvb,`Tvb`>>. */
 }
 
@@ -143,7 +143,7 @@ WSLUA_METHOD Tvb_captured_len(lua_State* L) {
     /* Obtain the captured length (amount saved in the capture process) of a <<lua_class_Tvb,`Tvb`>>. */
     Tvb tvb = checkTvb(L,1);
 
-    lua_pushnumber(L,tvb_captured_length(tvb->ws_tvb));
+    lua_pushinteger(L,tvb_captured_length(tvb->ws_tvb));
     WSLUA_RETURN(1); /* The captured length of the <<lua_class_Tvb,`Tvb`>>. */
 }
 
@@ -152,7 +152,7 @@ WSLUA_METHOD Tvb_len(lua_State* L) {
        Same as captured_len; kept only for backwards compatibility */
     Tvb tvb = checkTvb(L,1);
 
-    lua_pushnumber(L,tvb_captured_length(tvb->ws_tvb));
+    lua_pushinteger(L,tvb_captured_length(tvb->ws_tvb));
     WSLUA_RETURN(1); /* The captured length of the <<lua_class_Tvb,`Tvb`>>. */
 }
 
@@ -163,7 +163,7 @@ WSLUA_METHOD Tvb_reported_length_remaining(lua_State* L) {
     Tvb tvb = checkTvb(L,1);
     int offset = (int) luaL_optinteger(L, Tvb_reported_length_remaining_OFFSET, 0);
 
-    lua_pushnumber(L,tvb_reported_length_remaining(tvb->ws_tvb, offset));
+    lua_pushinteger(L,tvb_reported_length_remaining(tvb->ws_tvb, offset));
     WSLUA_RETURN(1); /* The captured length of the <<lua_class_Tvb,`Tvb`>>. */
 }
 
@@ -176,9 +176,13 @@ WSLUA_METHOD Tvb_bytes(lua_State* L) {
 #define WSLUA_OPTARG_Tvb_bytes_LENGTH 3 /* The length (in octets) of the range. Defaults to until the end of the <<lua_class_Tvb,`Tvb`>>. */
     Tvb tvb = checkTvb(L,1);
     GByteArray* ba;
+#if LUA_VERSION_NUM >= 503
+    int offset = (int)luaL_optinteger(L, WSLUA_OPTARG_Tvb_bytes_OFFSET, 0);
+    int len = (int)luaL_optinteger(L, WSLUA_OPTARG_Tvb_bytes_LENGTH, -1);
+#else
     int offset = luaL_optint(L, WSLUA_OPTARG_Tvb_bytes_OFFSET, 0);
     int len = luaL_optint(L,WSLUA_OPTARG_Tvb_bytes_LENGTH,-1);
-
+#endif
     if (tvb->expired) {
         luaL_error(L,"expired tvb");
         return 0;
@@ -206,7 +210,7 @@ WSLUA_METHOD Tvb_offset(lua_State* L) {
     /* Returns the raw offset (from the beginning of the source <<lua_class_Tvb,`Tvb`>>) of a sub <<lua_class_Tvb,`Tvb`>>. */
     Tvb tvb = checkTvb(L,1);
 
-    lua_pushnumber(L,tvb_raw_offset(tvb->ws_tvb));
+    lua_pushinteger(L,tvb_raw_offset(tvb->ws_tvb));
     WSLUA_RETURN(1); /* The raw offset of the <<lua_class_Tvb,`Tvb`>>. */
 }
 
@@ -437,16 +441,16 @@ WSLUA_METHOD TvbRange_uint(lua_State* L) {
 
     switch (tvbr->len) {
         case 1:
-            lua_pushnumber(L,tvb_get_guint8(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_guint8(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 2:
-            lua_pushnumber(L,tvb_get_ntohs(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_ntohs(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 3:
-            lua_pushnumber(L,tvb_get_ntoh24(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_ntoh24(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 4:
-            lua_pushnumber(L,tvb_get_ntohl(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_ntohl(tvbr->tvb->ws_tvb,tvbr->offset));
             WSLUA_RETURN(1); /* The unsigned integer value. */
         default:
             luaL_error(L,"TvbRange:uint() does not handle %d byte integers",tvbr->len);
@@ -470,16 +474,16 @@ WSLUA_METHOD TvbRange_le_uint(lua_State* L) {
     switch (tvbr->len) {
         case 1:
             /* XXX unsigned anyway */
-            lua_pushnumber(L,(lua_Number)(guint)tvb_get_guint8(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,(lua_Integer)(guint)tvb_get_guint8(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 2:
-            lua_pushnumber(L,tvb_get_letohs(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_letohs(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 3:
-            lua_pushnumber(L,tvb_get_letoh24(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_letoh24(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 4:
-            lua_pushnumber(L,tvb_get_letohl(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_letohl(tvbr->tvb->ws_tvb,tvbr->offset));
             WSLUA_RETURN(1); /* The unsigned integer value */
         default:
             luaL_error(L,"TvbRange:le_uint() does not handle %d byte integers",tvbr->len);
@@ -590,16 +594,16 @@ WSLUA_METHOD TvbRange_int(lua_State* L) {
 
     switch (tvbr->len) {
         case 1:
-            lua_pushnumber(L,tvb_get_gint8(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_gint8(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 2:
-            lua_pushnumber(L,tvb_get_ntohis(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_ntohis(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 3:
-            lua_pushnumber(L,tvb_get_ntohi24(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_ntohi24(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 4:
-            lua_pushnumber(L,tvb_get_ntohil(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_ntohil(tvbr->tvb->ws_tvb,tvbr->offset));
             WSLUA_RETURN(1); /* The signed integer value. */
             /*
              * XXX:
@@ -629,16 +633,16 @@ WSLUA_METHOD TvbRange_le_int(lua_State* L) {
 
     switch (tvbr->len) {
         case 1:
-            lua_pushnumber(L,tvb_get_gint8(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_gint8(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 2:
-            lua_pushnumber(L,tvb_get_letohis(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_letohis(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 3:
-            lua_pushnumber(L,tvb_get_letohi24(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_letohi24(tvbr->tvb->ws_tvb,tvbr->offset));
             return 1;
         case 4:
-            lua_pushnumber(L,tvb_get_letohil(tvbr->tvb->ws_tvb,tvbr->offset));
+            lua_pushinteger(L,tvb_get_letohil(tvbr->tvb->ws_tvb,tvbr->offset));
             WSLUA_RETURN(1); /* The signed integer value. */
         default:
             luaL_error(L,"TvbRange:le_int() does not handle %d byte integers",tvbr->len);
@@ -1233,13 +1237,13 @@ WSLUA_METHOD TvbRange_bitfield(lua_State* L) {
     }
 
     if (len <= 8) {
-        lua_pushnumber(L,(lua_Number)(guint)tvb_get_bits8(tvbr->tvb->ws_tvb,tvbr->offset*8 + pos, len));
+        lua_pushinteger(L,(lua_Integer)(guint)tvb_get_bits8(tvbr->tvb->ws_tvb,tvbr->offset*8 + pos, len));
         return 1;
     } else if (len <= 16) {
-        lua_pushnumber(L,tvb_get_bits16(tvbr->tvb->ws_tvb,tvbr->offset*8 + pos, len, FALSE));
+        lua_pushinteger(L,tvb_get_bits16(tvbr->tvb->ws_tvb,tvbr->offset*8 + pos, len, FALSE));
         return 1;
     } else if (len <= 32) {
-        lua_pushnumber(L,tvb_get_bits32(tvbr->tvb->ws_tvb,tvbr->offset*8 + pos, len, FALSE));
+        lua_pushinteger(L,tvb_get_bits32(tvbr->tvb->ws_tvb,tvbr->offset*8 + pos, len, FALSE));
         return 1;
     } else if (len <= 64) {
         pushUInt64(L,tvb_get_bits64(tvbr->tvb->ws_tvb,tvbr->offset*8 + pos, len, FALSE));
@@ -1330,7 +1334,7 @@ WSLUA_METHOD TvbRange_len(lua_State* L) {
         luaL_error(L,"expired tvb");
         return 0;
     }
-    lua_pushnumber(L,(lua_Number)tvbr->len);
+    lua_pushinteger(L,(lua_Integer)tvbr->len);
     return 1;
 }
 
@@ -1343,7 +1347,7 @@ WSLUA_METHOD TvbRange_offset(lua_State* L) {
         luaL_error(L,"expired tvb");
         return 0;
     }
-    lua_pushnumber(L,(lua_Number)tvbr->offset);
+    lua_pushinteger(L,(lua_Integer)tvbr->offset);
     return 1;
 }
 
diff --git a/epan/wslua/wslua_wtap.c b/epan/wslua/wslua_wtap.c
index 524ed7c..9fa2787 100644
--- a/epan/wslua/wslua_wtap.c
+++ b/epan/wslua/wslua_wtap.c
@@ -85,7 +85,7 @@ WSLUA_FUNCTION wslua_wtap_name_to_file_type_subtype(lua_State* LS) {
     if (filetype == -1)
         lua_pushnil(LS);
     else
-        lua_pushnumber(LS,filetype);
+        lua_pushinteger(LS,filetype);
     WSLUA_RETURN(1); /* The filetype value for the file type with that name, or nil if there is no such file type. */
 }
 
@@ -96,7 +96,7 @@ WSLUA_FUNCTION wslua_wtap_pcap_file_type_subtype(lua_State* LS) {
     @since 3.2.12, 3.4.4
     */
     lua_Number filetype = wtap_pcap_file_type_subtype();
-    lua_pushnumber(LS,filetype);
+    lua_pushinteger(LS,filetype);
     WSLUA_RETURN(1); /* The filetype value for pcap files. */
 }
 
@@ -107,7 +107,7 @@ WSLUA_FUNCTION wslua_wtap_pcap_nsec_file_type_subtype(lua_State* LS) {
     @since 3.2.12, 3.4.4
     */
     lua_Number filetype = wtap_pcap_nsec_file_type_subtype();
-    lua_pushnumber(LS,filetype);
+    lua_pushinteger(LS,filetype);
     WSLUA_RETURN(1); /* The filetype value for nanosecond-resolution pcap files. */
 }
 
@@ -118,7 +118,7 @@ WSLUA_FUNCTION wslua_wtap_pcapng_file_type_subtype(lua_State* LS) {
     @since 3.2.12, 3.4.4
     */
     lua_Number filetype = wtap_pcapng_file_type_subtype();
-    lua_pushnumber(LS,filetype);
+    lua_pushinteger(LS,filetype);
     WSLUA_RETURN(1); /* The filetype value for pcapng files. */
 }
 
@@ -148,7 +148,7 @@ extern void wslua_init_wtap_filetypes(lua_State* LS) {
          * it.
          */
         lua_pushstring(LS, entry->name);
-        lua_pushnumber(LS, entry->ft);
+        lua_pushinteger(LS, entry->ft);
         /*
          * The -3 is the index, relative to the top of the stack, of
          * the table; the two elements on top of it are the ft and