From e7eebf6b026707e98e2d8bc1e64c69fd873def17 Mon Sep 17 00:00:00 2001
From: Fabian Greffrath <fabian@greffrath.com>
Date: Thu, 2 May 2024 21:31:51 +0200
Subject: [PATCH] fix -Wdeprecated-non-prototype in hsort()

---
 rott/rt_draw.c | 7 +++++--
 rott/rt_ted.c  | 6 ++++--
 rott/rt_util.c | 8 ++++----
 rott/rt_util.h | 2 +-
 4 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/rott/rt_draw.c b/rott/rt_draw.c
index 0da7a99..f8038c0 100644
--- a/rott/rt_draw.c
+++ b/rott/rt_draw.c
@@ -751,14 +751,17 @@ int   CalcRotate (objtype *ob)
 #define SGN(x)          ((x>0) ? (1) : ((x==0) ? (0) : (-1)))
 
 /*--------------------------------------------------------------------------*/
-int CompareHeights(visobj_t **s1p, visobj_t **s2p)
+int CompareHeights(void *v1p, void *v2p)
 {
+   visobj_t **s1p = (visobj_t **) v1p, **s2p = (visobj_t **) v2p;
+
    whereami=3;
    return SGN((*s1p)->viewheight-(*s2p)->viewheight);
 }
 
-void SwitchPointers(visobj_t **s1p, visobj_t **s2p)
+void SwitchPointers(void *v1p, void *v2p)
 {
+   visobj_t **s1p = (visobj_t **) v1p, **s2p = (visobj_t **) v2p;
    visobj_t * temp;
 
    whereami=4;
diff --git a/rott/rt_ted.c b/rott/rt_ted.c
index 5bef04c..d12cbba 100644
--- a/rott/rt_ted.c
+++ b/rott/rt_ted.c
@@ -179,13 +179,15 @@ int GetLumpForTile(int tile);
 #define SGN(x)          ((x>0) ? (1) : ((x==0) ? (0) : (-1)))
 
 /*--------------------------------------------------------------------------*/
-int CompareTags(cachetype *s1p, cachetype *s2p)
+int CompareTags(void *v1p, void *v2p)
 {
+      cachetype *s1p = (cachetype *) v1p, *s2p = (cachetype *) v2p;
       return SGN(s1p->lump-s2p->lump);
 }
 
-void SwitchCacheEntries(cachetype *s1p, cachetype *s2p)
+void SwitchCacheEntries(void *v1p, void *v2p)
 {
+   cachetype *s1p = (cachetype *) v1p, *s2p = (cachetype *) v2p;
    cachetype temp;
 
 	temp=*s1p;
diff --git a/rott/rt_util.c b/rott/rt_util.c
index 04ba739..831c7d4 100644
--- a/rott/rt_util.c
+++ b/rott/rt_util.c
@@ -1201,15 +1201,15 @@ int SideOfLine(int x1, int y1, int x2, int y2, int x3, int y3)
 //
 //******************************************************************************
 
-typedef int (*PFI)();           /* pointer to a function returning int  */
-typedef void (*PFV)();           /* pointer to a function returning int  */
+typedef int (*PFI)(void *, void*); /* pointer to a function returning int  */
+typedef void (*PFV)(void *, void*); /* pointer to a function returning int  */
 static PFI Comp;                        /* pointer to comparison routine                */
 static PFV Switch;                        /* pointer to comparison routine                */
 static int Width;                       /* width of an object in bytes                  */
 static char *Base;                      /* pointer to element [-1] of array             */
 
 
-static void newsift_down(L,U) int L,U;
+static void newsift_down(int L, int U)
 {  int c;
 
    while(1)
@@ -1222,7 +1222,7 @@ static void newsift_down(L,U) int L,U;
       }
 }
 
-void hsort(char * base, int nel, int width, int (*compare)(), void (*switcher)())
+void hsort(char * base, int nel, int width, int (*compare)(void *, void*), void (*switcher)(void *, void*))
 {
 static int i,n,stop;
         /*      Perform a heap sort on an array starting at base.  The array is
diff --git a/rott/rt_util.h b/rott/rt_util.h
index d3b4988..3bf8163 100644
--- a/rott/rt_util.h
+++ b/rott/rt_util.h
@@ -94,7 +94,7 @@ void UL_DisplayMemoryError ( int memneeded );
 
 int   SideOfLine(int x1, int y1, int x2, int y2, int x3, int y3);
 
-void hsort(char * base, int nel, int width, int (*compare)(), void (*switcher)());
+void hsort(char * base, int nel, int width, int (*compare)(void *, void*), void (*switcher)(void *, void*));
 
 char * UL_GetPath (char * path, char *dir);
 boolean UL_ChangeDirectory (char *path);