diff --git a/ncurses/report_offsets.c b/ncurses/report_offsets.c
new file mode 100644
index 0000000..0f82dcf
--- /dev/null
+++ b/ncurses/report_offsets.c
@@ -0,0 +1,272 @@
+/****************************************************************************
+ * Copyright 2018-2023,2024 Thomas E. Dickey                                *
+ * Copyright 2017 Free Software Foundation, Inc.                            *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Thomas E. Dickey                                                *
+ ****************************************************************************/
+
+#define NEW_PAIR_INTERNAL 1
+#include <curses.priv.h>
+
+MODULE_ID("$Id: report_offsets.c,v 1.28 2024/02/24 15:59:09 tom Exp $")
+
+#define show_size(type) \
+	flag = 0; \
+	last = 0; \
+	printf("%5lu   " #type "\n", (unsigned long)sizeof(type))
+#define show_name(name) \
+	printf("%5lu   " #name "\n", (unsigned long)(name))
+#define show_offset(type,member) \
+	next = (unsigned long)offsetof(type,member); \
+	if (last > next) \
+		printf("?? incorrect order for " #type "." #member "\n"); \
+	printf("%5lu %c " #type "." #member "\n", next, flag ? *flag : ' '); \
+	last = next; \
+	flag = 0
+
+#if NCURSES_WIDECHAR && NCURSES_EXT_COLORS
+#define show_COLORS(type,member) { flag = "c"; show_offset(type,member); }
+#else
+#define show_COLORS(type,member)	/* nothing */
+#endif
+
+#ifdef USE_TERM_DRIVER
+#define show_DRIVER(type,member) { flag = "d"; show_offset(type,member); }
+#else
+#define show_DRIVER(type,member)	/* nothing */
+#endif
+
+#if NO_LEAKS
+#define show_MLEAKS(type,member) { flag = "L"; show_offset(type,member); }
+#else
+#define show_MLEAKS(type,member)	/* nothing */
+#endif
+
+#define show_NORMAL(type,member) { flag = "n"; show_offset(type,member); }
+#define show_OPTION(type,member) { flag = "+"; show_offset(type,member); }
+
+#if USE_REENTRANT
+#define show_REENTR(type,member) { flag = "r"; show_offset(type,member); }
+#else
+#define show_REENTR(type,member)	/* nothing */
+#endif
+
+#if NCURSES_SP_FUNCS
+#define show_SPFUNC(type,member) { flag = "s"; show_offset(type,member); }
+#else
+#define show_SPFUNC(type,member)	/* nothing */
+#endif
+
+#ifdef USE_PTHREADS
+#define show_THREAD(type,member) { flag = "t"; show_offset(type,member); }
+#else
+#define show_THREAD(type,member)	/* nothing */
+#endif
+
+#ifdef TRACE
+#define show_TRACES(type,member) { flag = "T"; show_offset(type,member); }
+#else
+#define show_TRACES(type,member)	/* nothing */
+#endif
+
+#if USE_WIDEC_SUPPORT
+#define show_WIDECH(type,member) { flag = "w"; show_offset(type,member); }
+#else
+#define show_WIDECH(type,member)	/* nothing */
+#endif
+
+int
+main(void)
+{
+    const char *flag = 0;
+    unsigned long last, next;
+
+    printf("Size/offsets of data structures:\n");
+
+    show_size(attr_t);
+    show_size(chtype);
+#if USE_WIDEC_SUPPORT
+    show_size(cchar_t);
+#endif
+    show_size(color_t);
+    show_size(colorpair_t);
+    show_size(mmask_t);
+    show_size(rgb_bits_t);
+    show_size(MEVENT);
+    show_size(NCURSES_BOOL);
+    show_size(TRIES);
+
+    printf("\n");
+    printf("Sizes of buffers/arrays:\n");
+#if USE_WIDEC_SUPPORT
+    show_name(CCHARW_MAX);
+#endif
+    show_name(EV_MAX);
+    show_name(FIFO_SIZE);
+    show_name(NAMESIZE);
+    show_name(MB_LEN_MAX);
+    show_name(PATH_MAX);
+#ifdef TRACE
+    show_name(TRACECHR_BUF);
+    show_name(TRACEMSE_MAX);
+#endif
+
+    printf("\n");
+    show_size(SCREEN);
+    show_offset(SCREEN, _ifd);
+    show_offset(SCREEN, _fifo);
+    show_offset(SCREEN, _fifohead);
+    show_offset(SCREEN, _direct_color);
+    show_offset(SCREEN, _panelHook);
+    show_offset(SCREEN, jump);
+    show_offset(SCREEN, rsp);
+#if NCURSES_NO_PADDING
+    show_OPTION(SCREEN, _no_padding);
+#endif
+#if USE_HARD_TABS
+    show_OPTION(SCREEN, _ht_cost);
+#endif
+#if USE_ITALIC
+    show_OPTION(SCREEN, _use_ritm);
+#endif
+#if USE_KLIBC_KBD
+    show_OPTION(SCREEN, _extended_key);
+#endif
+#if NCURSES_EXT_FUNCS
+    show_OPTION(SCREEN, _assumed_color);
+#endif
+#if USE_GPM_SUPPORT
+    show_OPTION(SCREEN, _mouse_gpm_loaded);
+#ifdef HAVE_LIBDL
+    show_OPTION(SCREEN, _dlopen_gpm);
+#endif
+#endif
+#if USE_EMX_MOUSE
+    show_OPTION(SCREEN, _emxmouse_wfd);
+#endif
+#if USE_SYSMOUSE
+    show_OPTION(SCREEN, _sysmouse_fifo);
+#endif
+    show_DRIVER(SCREEN, _drv_mouse_fifo);
+#if USE_SIZECHANGE
+    show_OPTION(SCREEN, _resize);
+#endif
+#ifdef USE_SP_WINDOWLIST
+    show_NORMAL(SCREEN, _windowlist);
+#endif
+    show_REENTR(SCREEN, _ttytype);
+    show_SPFUNC(SCREEN, use_tioctl);
+    show_WIDECH(SCREEN, _screen_acs_fix);
+    show_COLORS(SCREEN, _ordered_pairs);
+    show_TRACES(SCREEN, tracechr_buf);
+
+    printf("\n");
+    show_size(TERMINAL);
+    show_offset(TERMINAL, type);
+    show_offset(TERMINAL, Filedes);
+    show_offset(TERMINAL, Ottyb);
+    show_offset(TERMINAL, Nttyb);
+    show_offset(TERMINAL, _baudrate);
+    show_offset(TERMINAL, _termname);
+    show_offset(TERMINAL, tparm_state);
+#if HAVE_INIT_EXTENDED_COLOR
+    show_COLORS(TERMINAL, type2);
+#endif
+
+    printf("\n");
+    show_size(TERMTYPE);
+#if NCURSES_XNAMES
+    show_OPTION(TERMTYPE, ext_str_table);
+    show_OPTION(TERMTYPE, ext_Strings);
+#endif
+
+    printf("\n");
+    show_size(TPARM_STATE);
+    show_offset(TPARM_STATE, stack);
+    show_offset(TPARM_STATE, stack_ptr);
+    show_offset(TPARM_STATE, out_buff);
+    show_offset(TPARM_STATE, fmt_buff);
+    show_offset(TPARM_STATE, static_vars);
+    show_TRACES(TPARM_STATE, tname);
+
+    printf("\n");
+    show_size(WINDOW);
+    show_WIDECH(WINDOW, _bkgrnd);
+    show_COLORS(WINDOW, _color);
+
+    printf("\n");
+    show_size(NCURSES_GLOBALS);
+    show_offset(NCURSES_GLOBALS, init_signals);
+    show_offset(NCURSES_GLOBALS, tgetent_cache);
+    show_offset(NCURSES_GLOBALS, dbd_vars);
+#if HAVE_TSEARCH
+    show_offset(NCURSES_GLOBALS, cached_tparm);
+#endif
+    show_DRIVER(NCURSES_GLOBALS, term_driver);
+#ifndef USE_SP_WINDOWLIST
+    show_NORMAL(NCURSES_GLOBALS, _nc_windowlist);
+#endif
+#if USE_HOME_TERMINFO
+    show_OPTION(NCURSES_GLOBALS, home_terminfo);
+#endif
+#if !USE_SAFE_SPRINTF
+    show_OPTION(NCURSES_GLOBALS, safeprint_rows);
+#endif
+    show_THREAD(NCURSES_GLOBALS, mutex_curses);
+#if USE_PTHREADS_EINTR
+    show_THREAD(NCURSES_GLOBALS, read_thread);
+#endif
+    show_WIDECH(NCURSES_GLOBALS, key_name);
+    show_TRACES(NCURSES_GLOBALS, trace_opened);
+    show_TRACES(NCURSES_GLOBALS, trace_level);
+    show_MLEAKS(NCURSES_GLOBALS, leak_checking);
+
+    printf("\n");
+    show_size(NCURSES_PRESCREEN);
+    show_offset(NCURSES_PRESCREEN, tparm_state);
+    show_offset(NCURSES_PRESCREEN, saved_tty);
+    show_offset(NCURSES_PRESCREEN, use_tioctl);
+    show_offset(NCURSES_PRESCREEN, _outch);
+#ifndef USE_SP_RIPOFF
+    show_NORMAL(NCURSES_PRESCREEN, rippedoff);
+#endif
+#if NCURSES_NO_PADDING
+    show_OPTION(NCURSES_PRESCREEN, _no_padding);
+#endif
+#if BROKEN_LINKER
+    show_offset(NCURSES_PRESCREEN, real_acs_map);
+#else
+    show_REENTR(NCURSES_PRESCREEN, real_acs_map);
+#endif
+#if BROKEN_LINKER || USE_REENTRANT
+    show_TRACES(NCURSES_PRESCREEN, _outchars);
+#endif
+
+    return EXIT_SUCCESS;
+}