Author: Andreas Beckmann <anbe@debian.org>
Description: fix building with GCC 15

--- a/cut-paste.c
+++ b/cut-paste.c
@@ -218,7 +218,6 @@ void vt_initsel()
 static char selbuf[BUFSIZ];
 char *vt_getselbuf()
 {
-	FILE *safe_popen();		/* From misc.c */
 	FILE *xcb;
 	char buffer[BUFSIZ];
 	int len;
@@ -239,7 +238,6 @@ char *vt_getselbuf()
 char *vt_setselbuf(buffer)
 char *buffer;
 {
-	FILE *safe_popen();		/* From misc.c */
 	FILE *xcb;
 	
 	strncpy(selbuf, buffer, BUFSIZ-1);
--- a/lock.c
+++ b/lock.c
@@ -24,7 +24,7 @@ static char *nextbuf=entered1;
 static struct passwd *pw=NULL;
 
 /* Used to release our input when the screen is unlocked */
-extern void (*do_input)(), normal_input();
+extern void (*do_input)(char), normal_input(char);
 
 /* Since this function is called as an input function, we need to handle
    all state here. 
--- a/misc.c
+++ b/misc.c
@@ -43,6 +43,8 @@
 # define OLCUC 0	/* Missing in FreeBSD, GNU/kFreeBSD */
 #endif /* !OLCUC */
 
+#include "splitvt.h"
+
 int tty_reset(int fd);
 
 /*
@@ -61,9 +63,9 @@ int *childpid;
 int win;		/* 0 for upper, 1 for lower */
 {
 
-	void dropctty(), pty_setwin();
+	void dropctty();
 	int get_master_pty(), get_slave_pty();
-	char *get_ttyname(), *myputenv();
+	char *get_ttyname();
 
 #ifndef TIOCGWINSZ
 	char LINES[12], COLUMNS[12];
@@ -223,8 +225,6 @@ int get_slave_pty()
 
 #endif
 
-extern char *ptsname();
-
 int get_master_pty()
 {
 
--- a/parserc.c
+++ b/parserc.c
@@ -16,8 +16,6 @@
 
 #define SPLITVTRC "/.splitvtrc"
 
-extern char *myputenv();  /* Portable setenv() function in misc.c */
-
 /* These are used only here in this file. */
 char *startupfile=NULL;
 char *rcfile_buf;
--- a/splitvt.c
+++ b/splitvt.c
@@ -58,15 +58,15 @@ static char upper_tty[64]={'\0'};	/* tty
 static char lower_tty[64]={'\0'};	/* tty_name of the lower window */	
 static struct passwd *pw=NULL;		/* Our passwd entry pointer */
 
-static void finish(), move_bar(), winch();
-extern void lock_screen();		/* From lock.c */
-void normal_input();
-static int  insert_dash();
+static void finish(int);
+static void move_bar(int);
+static void winch(int);
+static int  insert_dash(char **);
 static int  isalive();
 char extract();
 void splitvtrc();
 
-void (*do_input)() = normal_input;
+void (*do_input)(char) = normal_input;
 
 static char selection[BUFSIZ];		/* Screen selection buffer */
 
--- a/splitvt.h
+++ b/splitvt.h
@@ -36,7 +36,7 @@ extern int UU_lines;
 extern int stbottom;
 
 /* Functions exported from splitvt.c */
-extern void reset_bar();
+extern void reset_bar(int);
 
 /* If set, allow resizing to less than 3 lines */
 extern int force_height;
@@ -58,3 +58,7 @@ void d_zero(register char *dst, register
 void vt_initsel(void);
 int vttest(void);
 int safe_pclose(FILE *pipefp);
+char *myputenv(char *);
+FILE *safe_popen(char *, char *);
+void normal_input(char);
+void lock_screen(char);
--- a/terminal.c
+++ b/terminal.c
@@ -8,6 +8,7 @@
 #include	<term.h>
 #include	<stdio.h>
 #include	<string.h>
+#include	<stdlib.h>
 #include	"splitvt.h"
 #include	"video.h"
 #include	"terminal.h"
@@ -91,9 +92,6 @@ static capability capabilities[] = {
 
 /* areas and variables used to get termcap information */
 
-extern int tgetent();
-extern char *tgetstr();
-
 static char termcap_entry[2048];        /* termcap entry for the terminal */
 static char termcap_area[2048];		/* Static buffer for capabilities */
 static char *tp=termcap_area;		/* Used in tgetent() calls */
@@ -270,7 +268,6 @@ char *terminal_type;
 int *rows;
 int *cols;
 {
-	extern char *getenv();
 	static char *termtype=NULL, *error=NULL;
 
 	if ( (termtype=getenv("TERM")) == NULL )
--- a/terminal.h
+++ b/terminal.h
@@ -3,37 +3,37 @@
    exported for use in vt100.c
 */
 
-extern char *vt_initterm();	/* Initialize the termcap, return NULL if successful */
+extern char *vt_initterm(char *, int *, int *);	/* Initialize the termcap, return NULL if successful */
 extern void vt_bell();		/* Sound the terminal bell */
-extern void vt_goto();		/* Goto a specific x y coordinate */
-extern void vt_up();		/* Move cursor up */
-extern void vt_down();		/* Move cursor down */
-extern void vt_right();		/* Move cursor right */
-extern void vt_left();		/* Move cursor left */
+extern void vt_goto(int, int);		/* Goto a specific x y coordinate */
+extern void vt_up(int);		/* Move cursor up */
+extern void vt_down(int);		/* Move cursor down */
+extern void vt_right(int);		/* Move cursor right */
+extern void vt_left(int);		/* Move cursor left */
 extern void vt_clrscr();	/* Clear whole screen */
 extern void vt_clreos();	/* Clear to end of screen, include currline */
 extern void vt_clrbgs();	/* Clear to beginning of screen, include currline */
 extern void vt_clrline();	/* Clear line under cursor */
 extern void vt_clreol();	/* Clear to the end of line */
 extern void vt_clrbgl();	/* Clear to the beginning of line, including cursor */
-extern void vt_delline();	/* Delete line under cursor */
-extern void vt_delunder();	/* Delete character under cursor */
-extern void vt_insline();	/* Insert open line under cursor */
-extern void vt_bold();		/* Toggle bold display */
-extern void vt_underline();	/* Toggle underlined display */
-extern void vt_blink();		/* Toggle blinking display */
-extern void vt_reverse();	/* Toggle reversed display */
-extern void vt_setattr();	/* Set display attributes */
-extern void vt_setfg();		/* Set foreground color */
-extern void vt_setbg();		/* Set background color */
+extern void vt_delline(int);	/* Delete line under cursor */
+extern void vt_delunder(int);	/* Delete character under cursor */
+extern void vt_insline(int);	/* Insert open line under cursor */
+extern void vt_bold(int);		/* Toggle bold display */
+extern void vt_underline(int);	/* Toggle underlined display */
+extern void vt_blink(int);		/* Toggle blinking display */
+extern void vt_reverse(int);	/* Toggle reversed display */
+extern void vt_setattr(int);	/* Set display attributes */
+extern void vt_setfg(int);		/* Set foreground color */
+extern void vt_setbg(int);		/* Set background color */
 extern void vt_resetattr();	/* Reset display attributes */
-extern void vt_setscroll();	/* Set scrolling region */
+extern void vt_setscroll(int, int);	/* Set scrolling region */
 extern void vt_revscroll();	/* Reverse scroll */
-extern void vt_altcharset();	/* Toggle alternate character set (graphics) */
+extern void vt_altcharset(int, int);	/* Toggle alternate character set (graphics) */
 extern void vt_savecursor();	/* Save current hardware cursor position */
 extern void vt_restcursor();	/* Restore saved hardware cursor position */
-extern void vt_keystate();	/* Set and reset application mode keys */
-extern void vt_widemode();	/* Set and reset 132 column mode */
-extern void vt_rows_cols();	/* Return the rows and cols from termcap */
-extern void vt_insertchar();	/* Insert character in line */
+extern void vt_keystate(int);	/* Set and reset application mode keys */
+extern void vt_widemode(int);	/* Set and reset 132 column mode */
+extern void vt_rows_cols(char *, int *, int *);	/* Return the rows and cols from termcap */
+extern void vt_insertchar(int);	/* Insert character in line */
 extern void vt_update();	/* Flush any pending output */
--- a/video.h
+++ b/video.h
@@ -24,7 +24,7 @@ typedef struct {
 	int row_offset;			/* The physical offset of upper edge */
 	int scr_upper;			/* Upper limit of scroll region */
 	int scr_lower;			/* Lower limit of scroll region */
-	void (*process_char)();		/* Next output processing function */
+	void (*process_char)(int, int *);	/* Next output processing function */
 	enum keystate key_state;		/* For vt100 keypad */
 	unsigned char charset[NCHARSETS];	/* Current character set */
 	unsigned char textattr;			/* Current text attributes */
@@ -52,17 +52,17 @@ extern int TABSTOP;			/* Default value f
 #define REVERSE		0x08
 #define SELECTED	0xF0
 
-int **alloc_video();		/* Allocate a video memory buffer */
-void copy_video();		/* Copy a video buffer to an empty one */
-void add_video();		/* Add a character to a video buffer */
-void erase_video();		/* Erase a two-dimensional section */
-void scroll_video();		/* Scroll a section of the buffer */
-void revscroll_video();		/* Reverse-scroll a section of the buffer */
-void rshift_video();		/* Shift part of a line right */
-void paint_video();		/* Repaint the video buffer onto the screen */
-void getsel_video();		/* Get a selection from the video buffer */
-void clrsel_video();		/* Clear a selection from the video buffer */
-void put_video();		/* Set a character in the video buffer */
-int  get_video();		/* Get a character from the video buffer */
+int **alloc_video(int, int);			/* Allocate a video memory buffer */
+void copy_video(window *, int **, int, int, position *);		/* Copy a video buffer to an empty one */
+void add_video(window *, char);			/* Add a character to a video buffer */
+void erase_video(window *, int, int, int, int);	/* Erase a two-dimensional section */
+void scroll_video(window *, int);		/* Scroll a section of the buffer */
+void revscroll_video(window *, int);		/* Reverse-scroll a section of the buffer */
+void rshift_video(window *, int);		/* Shift part of a line right */
+void paint_video(window *);			/* Repaint the video buffer onto the screen */
+void getsel_video(window *, char *, int, int, int, int, int);		/* Get a selection from the video buffer */
+void clrsel_video(window *);			/* Clear a selection from the video buffer */
+void put_video(int, window *, int, int);	/* Set a character in the video buffer */
+int  get_video(window *, int, int);		/* Get a character from the video buffer */
 
 int check_attr(int pixel, int lastattr, unsigned char *currattr);
--- a/vt100.c
+++ b/vt100.c
@@ -44,8 +44,8 @@ static char terminal_type[BUFSIZ];	/* Ou
 static char *sep;	        	/* The window separator string */
 
 /* The various output processing functions, based on state */
-void scan_for_esc();
-void E_(), E_brac(), E_brac_Q(), E_lparen(), E_rparen(), E_pound();
+void scan_for_esc(int, int *);
+void E_(int, int *), E_brac(int, int *), E_brac_Q(int, int *), E_lparen(int, int *), E_rparen(int, int *), E_pound(int, int *);
 
 /* Make these four variables accessable to the calling program */
 int UU_lines=0;         /* The user requested lines for the upper window */
--- a/vt100.h
+++ b/vt100.h
@@ -1,16 +1,16 @@
 
 /* Global functions exported by vt100.c */
 
-extern char *init_vt100();		/* Initialize the window */
-extern void  set_win();			/* Move the cursor to current window */
-extern int   vt_write();		/* Write a buffer to a window */
-extern char  vt_prompt();		/* Prompt the user and return a char */
-extern void  vt_info();			/* Print out an info message */
-extern char *vt_getsel();		/* Get a selection on the window */
-extern char *vt_setselbuf();		/* Set the selection buffer */
+extern char *init_vt100(int);			/* Initialize the window */
+extern void  set_win(int);			/* Move the cursor to current window */
+extern int   vt_write(int, char *, int, int *);	/* Write a buffer to a window */
+extern char  vt_prompt(char *);			/* Prompt the user and return a char */
+extern void  vt_info(char *);			/* Print out an info message */
+extern char *vt_getsel(int, char *, int);	/* Get a selection on the window */
+extern char *vt_setselbuf(char *);		/* Set the selection buffer */
 extern char *vt_getselbuf();		/* Get the selection buffer */
 extern void  vt_redraw();		/* Repaint a window from RAM */
-extern void  vt_showscreen();		/* Show a (help) screen */
+extern void  vt_showscreen(char *, char**);	/* Show a (help) screen */
 extern void  end_vt100();		/* End the vt100 scrolling and such */
 
 /* Handy definitions, sometimes passed to vt100.c functions */
--- a/vtmouse.c
+++ b/vtmouse.c
@@ -15,8 +15,6 @@
 #include "vtmouse.h"
 #include "splitvt.h"
 
-extern FILE *safe_popen();		/* From misc.c */
-
 #ifdef MAIN
 void event_loop()
 {
--- a/vtmouse.h
+++ b/vtmouse.h
@@ -35,6 +35,6 @@ struct event {
    
 extern int terminal_input;	/* Set true if event_getc() can read input */
 
-extern int  event_init();
-extern int  event_getc();
+extern int  event_init(FILE *, FILE *, char *);
+extern int  event_getc(struct event *);
 extern void event_quit();