From 21fcb3d16707a1577bfaae3de183502e69fa383b Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno@eressea.de>
Date: Mon, 25 Apr 2005 17:44:19 +0000
Subject: [PATCH] log10(0) ist nicht erlaubt.

---
 src/common/gamecode/creport.c |  3 ++-
 src/common/kernel/eressea.c   | 15 +++++++++------
 src/common/kernel/unit.c      |  8 ++++++--
 src/common/modules/autoseed.c |  1 +
 4 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/src/common/gamecode/creport.c b/src/common/gamecode/creport.c
index a9f299141..00b8f8053 100644
--- a/src/common/gamecode/creport.c
+++ b/src/common/gamecode/creport.c
@@ -67,9 +67,10 @@
 #include <language.h>
 
 /* libc includes */
+#include <assert.h>
+#include <errno.h>
 #include <math.h>
 #include <stdio.h>
-#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/src/common/kernel/eressea.c b/src/common/kernel/eressea.c
index 29b72d592..2f648ab0a 100644
--- a/src/common/kernel/eressea.c
+++ b/src/common/kernel/eressea.c
@@ -1246,12 +1246,15 @@ count_migrants (const faction * f)
 int
 count_maxmigrants(const faction * f)
 {
-	int x = 0;
-	if (old_race(f->race) == RC_HUMAN) {
-		x = (int)(log10(count_all(f) / 50.0) * 20);
-		if (x < 0) x = 0;
-	}
-	return x;
+  int x = 0;
+  if (old_race(f->race) == RC_HUMAN) {
+    int nsize = count_all(f);
+    if (nsize>0) {
+      x = (int)(log10(nsize / 50.0) * 20);
+      if (x < 0) x = 0;
+    }
+  }
+  return x;
 }
 
 /*------------------------------------------------------------------*/
diff --git a/src/common/kernel/unit.c b/src/common/kernel/unit.c
index 68fc27be5..d6ef0e171 100644
--- a/src/common/kernel/unit.c
+++ b/src/common/kernel/unit.c
@@ -1136,8 +1136,12 @@ unitlist_insert(struct unit_list **ul, struct unit *u)
 int 
 maxheroes(const struct faction * f)
 {
-  int nmax = (int)(log10(count_all(f) / 50.0) * 20);
-  return (nmax<0)?0:nmax;
+  int nsize = count_all(f);
+  if (nsize==0) return 0;
+  else {
+    int nmax = (int)(log10(nsize / 50.0) * 20);
+    return (nmax<0)?0:nmax;
+  }
 }
 
 int 
diff --git a/src/common/modules/autoseed.c b/src/common/modules/autoseed.c
index a2430e0ee..8ab04c7c9 100644
--- a/src/common/modules/autoseed.c
+++ b/src/common/modules/autoseed.c
@@ -25,6 +25,7 @@
 
 /* util includes */
 #include <util/base36.h>
+#include <util/sql.h>
 #include <util/goodies.h>
 #include <util/sql.h>