diff --git a/include/extern.h b/include/extern.h
index 1733f17f8..24ca8369b 100644
--- a/include/extern.h
+++ b/include/extern.h
@@ -2123,7 +2123,7 @@ E boolean FDECL(validrole, (int));
 E boolean FDECL(validrace, (int, int));
 E boolean FDECL(validgend, (int, int, int));
 E boolean FDECL(validalign, (int, int, int));
-E int NDECL(randrole);
+E int FDECL(randrole, (BOOLEAN_P));
 E int FDECL(randrace, (int));
 E int FDECL(randgend, (int, int));
 E int FDECL(randalign, (int, int));
diff --git a/include/integer.h b/include/integer.h
index c6983e544..b420a708f 100644
--- a/include/integer.h
+++ b/include/integer.h
@@ -7,7 +7,7 @@
 #ifndef INTEGER_H
 #define INTEGER_H
 
-#if defined(__STDC__) && __STDC_VERSION__ >= 199101L
+#if (defined(__STDC__) && __STDC_VERSION__ >= 199901L)
 /* The compiler claims to conform to C99. Use stdint.h */
 #include <stdint.h>
 #define SKIP_STDINT_WORKAROUND
diff --git a/src/pray.c b/src/pray.c
index b03a509a3..3a1de4ae7 100644
--- a/src/pray.c
+++ b/src/pray.c
@@ -2090,15 +2090,13 @@ aligntyp alignment;
     if (!Hallucination)
         return align_gname(alignment);
 
-    /* Count the roles, so that we can pick one at random. */
-    int rolecount = 0;
-    while (roles[rolecount].filecode)
-        rolecount++;
-
-    /* The priest may not have initialized god names. If this is the
-       case, and we roll priest, we need to try again. */
+    /* Some roles (Priest) don't have a pantheon unless we're playing as
+       that role, so keep trying until we get a role which does have one.
+       [If playing a Priest, the current pantheon will be twice as likely
+       to get picked as any of the others.  That's not significant enough
+       to bother dealing with.] */
     do
-        which = rn2_on_display_rng(rolecount);
+        which = randrole(TRUE);
     while (!roles[which].lgod);
 
     switch (rn2_on_display_rng(9)) {
diff --git a/src/rnd.c b/src/rnd.c
index fa8ce0e20..8f92e42ab 100644
--- a/src/rnd.c
+++ b/src/rnd.c
@@ -17,16 +17,16 @@ struct rnglist_t {
     isaac64_ctx rng_state;
 };
 
-enum {CORE = 0, DISP};
+enum { CORE = 0, DISP = 1 };
 
 static struct rnglist_t rnglist[] = {
-    {rn2, FALSE, {0}},                      /* CORE */
-    {rn2_on_display_rng, FALSE, {0}},       /* DISP */
+    { rn2, FALSE, { 0 } },                      /* CORE */
+    { rn2_on_display_rng, FALSE, { 0 } },       /* DISP */
 };
 
 int
 whichrng(fn)
-int (*fn)(int);
+int FDECL((*fn), (int));
 {
     int i;
 
@@ -39,19 +39,21 @@ int (*fn)(int);
 void
 init_isaac64(seed, fn)
 unsigned long seed;
-int FDECL((*fn),(int));
+int FDECL((*fn), (int));
 {
-    unsigned char new_rng_state[sizeof(seed)];
-    int i, rngindx = whichrng(fn);
+    unsigned char new_rng_state[sizeof seed];
+    unsigned i;
+    int rngindx = whichrng(fn);
 
     if (rngindx < 0)
         panic("Bad rng function passed to init_isaac64().");
 
-    for (i=0; i<sizeof(seed); i++) {
-        new_rng_state[i]= (unsigned char)(seed & 0xFF);
+    for (i = 0; i < sizeof seed; i++) {
+        new_rng_state[i] = (unsigned char) (seed & 0xFF);
         seed >>= 8;
     }
-    isaac64_init(&rnglist[rngindx].rng_state, new_rng_state, sizeof(seed));
+    isaac64_init(&rnglist[rngindx].rng_state, new_rng_state,
+                 (int) sizeof seed);
 }
 
 static int
diff --git a/src/role.c b/src/role.c
index 8f2fa255f..08a181b6f 100644
--- a/src/role.c
+++ b/src/role.c
@@ -728,9 +728,16 @@ int rolenum;
 }
 
 int
-randrole()
+randrole(for_display)
+boolean for_display;
 {
-    return rn2(SIZE(roles) - 1);
+    int res = SIZE(roles) - 1;
+
+    if (for_display)
+        res = rn2_on_display_rng(res);
+    else
+        res = rn2(res);
+    return res;
 }
 
 STATIC_OVL int
@@ -746,7 +753,7 @@ randrole_filtered()
             && ok_gend(i, ROLE_NONE, ROLE_RANDOM, ROLE_NONE)
             && ok_align(i, ROLE_NONE, ROLE_NONE, ROLE_RANDOM))
             set[n++] = i;
-    return n ? set[rn2(n)] : randrole();
+    return n ? set[rn2(n)] : randrole(FALSE);
 }
 
 int
@@ -2021,7 +2028,7 @@ role_init()
     if (flags.pantheon == -1) {             /* new game */
         flags.pantheon = flags.initrole;    /* use own gods */
         while (!roles[flags.pantheon].lgod) /* unless they're missing */
-            flags.pantheon = randrole();
+            flags.pantheon = randrole(FALSE);
     }
     if (!g.urole.lgod) {
         g.urole.lgod = roles[flags.pantheon].lgod;
diff --git a/sys/amiga/winami.c b/sys/amiga/winami.c
index b4e116789..e1f5c7eb3 100644
--- a/sys/amiga/winami.c
+++ b/sys/amiga/winami.c
@@ -451,7 +451,7 @@ amii_player_selection()
     if (validrole(flags.initrole))
 	return;
     else {
-	flags.initrole=randrole();
+	flags.initrole = randrole(FALSE);
 	return;
     }
 #if 0 /* Don't query the user ... instead give random character -jhsa */
@@ -518,7 +518,7 @@ amii_player_selection()
 		}
 		else if( code == ' ' || code == '\n' || code == '\r' )
 		{
-		    flags.initrole = randrole();
+		    flags.initrole = randrole(FALSE);
 #if 0 /* OBSOLETE */
 		    strcpy( g.pl_character, roles[ rnd( 11 ) ] );
 #endif
@@ -543,7 +543,7 @@ amii_player_selection()
 		switch( gd->GadgetID )
 		{
 		case 1: /* Random Character */
-		    flags.initrole = randrole();
+		    flags.initrole = randrole(FALSE);
 #if 0 /* OBSOLETE */
 		    strcpy( g.pl_character, roles[ rnd( 11 ) ] );
 #endif
@@ -1380,7 +1380,7 @@ amii_player_selection()
                                        flags.initalign, PICK_RANDOM);
             if (flags.initrole < 0) {
                 amii_putstr(WIN_MESSAGE, 0, "Incompatible role!");
-                flags.initrole = randrole();
+                flags.initrole = randrole(FALSE);
             }
         } else {
             /* Prompt for a role */
@@ -1416,7 +1416,7 @@ amii_player_selection()
             any.a_int = pick_role(flags.initrace, flags.initgend,
                                   flags.initalign, PICK_RANDOM) + 1;
             if (any.a_int == 0) /* must be non-zero */
-                any.a_int = randrole() + 1;
+                any.a_int = randrole(FALSE) + 1;
             add_menu(win, NO_GLYPH, &any, '*', 0, ATR_NONE, "Random",
                      MENU_UNSELECTED);
             any.a_int = i + 1; /* must be non-zero */
diff --git a/sys/mac/macmenu.c b/sys/mac/macmenu.c
index a1c4fe946..331bb2d9a 100644
--- a/sys/mac/macmenu.c
+++ b/sys/mac/macmenu.c
@@ -549,7 +549,7 @@ mac_askname()
         currrole = flags.initrole;
     /* Check for backward compatibility */
     else if ((currrole = str2role(g.pl_character)) < 0)
-        currrole = randrole();
+        currrole = randrole(FALSE);
 
     /* Initialize the race popup menu */
     if (!(askmenu[RSRC_ASK_RACE] = NewMenu(RSRC_ASK_RACE, "\p")))
diff --git a/sys/unix/unixmain.c b/sys/unix/unixmain.c
index cc593b954..18d1b3aac 100644
--- a/sys/unix/unixmain.c
+++ b/sys/unix/unixmain.c
@@ -768,18 +768,18 @@ error:
 unsigned long
 sys_random_seed()
 {
-    unsigned long seed;
+    unsigned long seed = 0L;
     unsigned long pid = (unsigned long) getpid();
     boolean no_seed = TRUE;
 #ifdef DEV_RANDOM
-    FILE *fptr = NULL;
+    FILE *fptr;
 
     fptr = fopen(DEV_RANDOM, "r");
     if (fptr) {
-        fread(&seed, sizeof(long), 1, fptr);
+        fread(&seed, sizeof (long), 1, fptr);
         has_strong_rngseed = TRUE;  /* decl.c */
         no_seed = FALSE;
-        fclose(fptr);
+        (void) fclose(fptr);
     } else {
         /* leaves clue, doesn't exit */
         paniclog("sys_random_seed", "falling back to weak seed");
diff --git a/sys/wince/mswproc.c b/sys/wince/mswproc.c
index 3cd734f1a..9236ccd7d 100644
--- a/sys/wince/mswproc.c
+++ b/sys/wince/mswproc.c
@@ -225,7 +225,7 @@ mswin_player_selection(void)
                                            flags.initalign, PICK_RANDOM);
                 if (flags.initrole < 0) {
                     raw_print("Incompatible role!");
-                    flags.initrole = randrole();
+                    flags.initrole = randrole(FALSE);
                 }
             }
 
@@ -358,7 +358,7 @@ prompt_for_player_selection(void)
                                        flags.initalign, PICK_RANDOM);
             if (flags.initrole < 0) {
                 /* tty_putstr(BASE_WINDOW, 0, "Incompatible role!"); */
-                flags.initrole = randrole();
+                flags.initrole = randrole(FALSE);
             }
         } else {
             /* tty_clear_nhwindow(BASE_WINDOW); */
@@ -396,7 +396,7 @@ prompt_for_player_selection(void)
             any.a_int = pick_role(flags.initrace, flags.initgend,
                                   flags.initalign, PICK_RANDOM) + 1;
             if (any.a_int == 0) /* must be non-zero */
-                any.a_int = randrole() + 1;
+                any.a_int = randrole(FALSE) + 1;
             add_menu(win, NO_GLYPH, &any, '*', 0, ATR_NONE, "Random",
                      MENU_UNSELECTED);
             any.a_int = i + 1; /* must be non-zero */
diff --git a/util/makedefs.c b/util/makedefs.c
index 8ea91a9f2..53015a2a0 100644
--- a/util/makedefs.c
+++ b/util/makedefs.c
@@ -1615,6 +1615,27 @@ static const char *build_opts[] = {
 #endif
     /* pattern matching method will be substituted by nethack at run time */
     "pattern matching via :PATMATCH:",
+#ifdef USE_ISAAC64
+    "pseudo random numbers generated by ISAAC64",
+#ifdef DEV_RANDOM
+#ifdef __STDC__
+    /* include which specific one */
+    "strong PRNG seed available from " DEV_RANDOM,
+#else
+    "strong PRNG seed available from DEV_RANDOM",
+#endif
+#else
+#ifdef WIN32
+    "strong PRNG seed available from CNG BCryptGenRandom()",
+#endif
+#endif  /* DEV_RANDOM */    
+#else   /* ISAAC64 */
+#ifdef RANDOM
+    "pseudo random numbers generated by random()",
+#else
+    "pseudo random numbers generated by C rand()",
+#endif
+#endif
 #ifdef SELECTSAVED
     "restore saved games via menu",
 #endif
diff --git a/win/curses/cursinit.c b/win/curses/cursinit.c
index 39f38980b..09326635c 100644
--- a/win/curses/cursinit.c
+++ b/win/curses/cursinit.c
@@ -543,7 +543,7 @@ curses_choose_character()
         sel = pick_role(flags.initrace, flags.initgend,
                         flags.initalign, PICK_RANDOM);
         if (sel < 0)
-            sel = randrole();
+            sel = randrole(FALSE);
     }
 
     flags.initrole = sel;
diff --git a/win/gem/wingem.c b/win/gem/wingem.c
index a337eed2e..4d3143837 100644
--- a/win/gem/wingem.c
+++ b/win/gem/wingem.c
@@ -234,7 +234,7 @@ Gem_player_selection()
             if (flags.initrole < 0) {
                 mar_add_message("Incompatible role!");
                 mar_display_nhwindow(WIN_MESSAGE);
-                flags.initrole = randrole();
+                flags.initrole = randrole(FALSE);
             }
         } else {
             /* Prompt for a role */
@@ -256,7 +256,7 @@ Gem_player_selection()
             any.a_int = pick_role(flags.initrace, flags.initgend,
                                   flags.initalign, PICK_RANDOM) + 1;
             if (any.a_int == 0) /* must be non-zero */
-                any.a_int = randrole() + 1;
+                any.a_int = randrole(FALSE) + 1;
             add_menu(win, NO_GLYPH, &any, '*', 0, ATR_NONE, "Random",
                      MENU_UNSELECTED);
             any.a_int = i + 1; /* must be non-zero */
diff --git a/win/gnome/gnbind.c b/win/gnome/gnbind.c
index 44e09ee6a..0b85b30d1 100644
--- a/win/gnome/gnbind.c
+++ b/win/gnome/gnbind.c
@@ -159,7 +159,7 @@ gnome_player_selection()
         sel = pick_role(flags.initrace, flags.initgend, flags.initalign,
                         PICK_RANDOM);
         if (sel < 0)
-            sel = randrole();
+            sel = randrole(FALSE);
     }
 
     flags.initrole = sel;
diff --git a/win/tty/wintty.c b/win/tty/wintty.c
index eb5579f5d..52e57a6b4 100644
--- a/win/tty/wintty.c
+++ b/win/tty/wintty.c
@@ -510,7 +510,7 @@ tty_player_selection()
                     k = pick_role(RACE, GEND, ALGN, PICK_RANDOM);
                     if (k < 0) {
                         tty_putstr(BASE_WINDOW, 0, "Incompatible role!");
-                        k = randrole();
+                        k = randrole(FALSE);
                     }
                 } else {
                     /* Prompt for a role */
@@ -572,7 +572,7 @@ tty_player_selection()
                     } else if (choice == ROLE_RANDOM) {
                         k = pick_role(RACE, GEND, ALGN, PICK_RANDOM);
                         if (k < 0)
-                            k = randrole();
+                            k = randrole(FALSE);
                     } else {
                         k = choice - 1;
                     }
diff --git a/win/win32/mswproc.c b/win/win32/mswproc.c
index d7731366b..1d9907b42 100644
--- a/win/win32/mswproc.c
+++ b/win/win32/mswproc.c
@@ -271,7 +271,7 @@ mswin_player_selection(void)
                                            flags.initalign, PICK_RANDOM);
                 if (flags.initrole < 0) {
                     raw_print("Incompatible role!");
-                    flags.initrole = randrole();
+                    flags.initrole = randrole(FALSE);
                 }
             }
 
@@ -395,7 +395,7 @@ prompt_for_player_selection(void)
                                        flags.initalign, PICK_RANDOM);
             if (flags.initrole < 0) {
                 /* tty_putstr(BASE_WINDOW, 0, "Incompatible role!"); */
-                flags.initrole = randrole();
+                flags.initrole = randrole(FALSE);
             }
         } else {
             /* tty_clear_nhwindow(BASE_WINDOW); */
@@ -433,7 +433,7 @@ prompt_for_player_selection(void)
             any.a_int = pick_role(flags.initrace, flags.initgend,
                                   flags.initalign, PICK_RANDOM) + 1;
             if (any.a_int == 0) /* must be non-zero */
-                any.a_int = randrole() + 1;
+                any.a_int = randrole(FALSE) + 1;
             add_menu(win, NO_GLYPH, &any, '*', 0, ATR_NONE, "Random",
                      MENU_UNSELECTED);
             any.a_int = i + 1; /* must be non-zero */