Debugging added where needed.

sql/sql_acl.cc:
  Debugging added where needed
sql/sql_string.cc:
  Debugging added where needed

sql/sql_acl.cc

@@ -769,7 +769,7 @@ int wild_case_compare(const char *str,const char *wildstr)
 {
   reg3 int flag;
   DBUG_ENTER("wild_case_compare");
-
+  DBUG_PRINT("enter",("str='%s', wildstr='%s'",str,wildstr));
   while (*wildstr)
   {
     while (*wildstr && *wildstr != wild_many && *wildstr != wild_one)
@@ -892,16 +892,18 @@ bool acl_check_host(const char *host, const char *ip)
 bool change_password(THD *thd, const char *host, const char *user,
 		     char *new_password)
 {
+  DBUG_ENTER("change_password");
+  DBUG_PRINT("enter",("thd=%x, host='%s', user='%s', new_password='%s'",thd,host,user,new_password));
   uint length=0;
   if (!user[0])
   {
     send_error(&thd->net, ER_PASSWORD_ANONYMOUS_USER);
-    return 1;
+    DBUG_RETURN(1);
   }
   if (!initialized)
   {
     send_error(&thd->net, ER_PASSWORD_NOT_ALLOWED); /* purecov: inspected */
-    return 1; /* purecov: inspected */
+    DBUG_RETURN(1); /* purecov: inspected */
   }
   if (!host)
     host=thd->ip; /* purecov: tested */
@@ -913,15 +915,16 @@ bool change_password(THD *thd, const char *host, const char *user,
 	       my_strcasecmp(host,thd->host ? thd->host : thd->ip))))
   {
     if (check_access(thd, UPDATE_ACL, "mysql",0,1))
-      return 1;
+      DBUG_RETURN(1);
   }
   VOID(pthread_mutex_lock(&acl_cache->lock));
   ACL_USER *acl_user;
+  DBUG_PRINT("info",("host=%s, user=%s",host,user));
   if (!(acl_user= find_acl_user(host,user)) || !acl_user->user)
   {
     send_error(&thd->net, ER_PASSWORD_NO_MATCH);
     VOID(pthread_mutex_unlock(&acl_cache->lock));
-    return 1;
+    DBUG_RETURN(1);
   }
   if (update_user_table(thd,
 			acl_user->host.hostname ? acl_user->host.hostname : "",
@@ -929,7 +932,7 @@ bool change_password(THD *thd, const char *host, const char *user,
   {
     VOID(pthread_mutex_unlock(&acl_cache->lock)); /* purecov: deadcode */
     send_error(&thd->net,0); /* purecov: deadcode */
-    return 1; /* purecov: deadcode */
+    DBUG_RETURN(1); /* purecov: deadcode */
   }
   get_salt_from_password(acl_user->salt,new_password);
   if (!new_password[0])
@@ -950,7 +953,7 @@ bool change_password(THD *thd, const char *host, const char *user,
 		new_password));
   mysql_update_log.write(thd,buff,qinfo.q_len);
   mysql_bin_log.write(&qinfo);
-  return 0;
+  DBUG_RETURN(0);
 }
 
 
@@ -961,17 +964,23 @@ bool change_password(THD *thd, const char *host, const char *user,
 static ACL_USER *
 find_acl_user(const char *host, const char *user)
 {
+  DBUG_ENTER("find_acl_user");
+  DBUG_PRINT("enter",("host='%s', user='%s'",host,user));
   for (uint i=0 ; i < acl_users.elements ; i++)
   {
     ACL_USER *acl_user=dynamic_element(&acl_users,i,ACL_USER*);
+    DBUG_PRINT("info",("strcmp('%s','%s'), compare_hostname('%s','%s'),",
+			    user,acl_user->user,(host),(acl_user->host)));
     if (!acl_user->user && !user[0] ||
 	acl_user->user && !strcmp(user,acl_user->user))
     {
-      if (compare_hostname(&acl_user->host,host,host))
-	return acl_user;
+      if (compare_hostname(&(acl_user->host),host,host))
+      {
+	DBUG_RETURN(acl_user);
       }
     }
-  return 0;
+  }
+  DBUG_RETURN(0);
 }
 
 /*****************************************************************************

sql/sql_string.cc

@@ -699,8 +699,11 @@ int wild_case_compare(const char *str,const char *str_end,
 
 int wild_case_compare(String &match,String &wild, char escape)
 {
-  return wild_case_compare(match.ptr(),match.ptr()+match.length(),
-			   wild.ptr(), wild.ptr()+wild.length(),escape);
+  DBUG_ENTER("wild_case_compare");
+  DBUG_PRINT("enter",("match='%s', wild='%s', escape='%c'"
+			  ,match.ptr(),wild.ptr(),escape));
+  DBUG_RETURN(wild_case_compare(match.ptr(),match.ptr()+match.length(),
+			   wild.ptr(), wild.ptr()+wild.length(),escape));
 }
 
 /*
@@ -710,6 +713,9 @@ int wild_case_compare(String &match,String &wild, char escape)
 int wild_compare(const char *str,const char *str_end,
 		 const char *wildstr,const char *wildend,char escape)
 {
+  DBUG_ENTER("wild_compare");
+  DBUG_PRINT("enter",("str='%s', str_end='%s', wildstr='%s', wildend='%s', escape='%c'"
+			  ,str,str_end,wildstr,wildend,escape));
   int result= -1;				// Not found, using wildcards
   while (wildstr != wildend)
   {
@@ -718,9 +724,13 @@ int wild_compare(const char *str,const char *str_end,
       if (*wildstr == escape && wildstr+1 != wildend)
 	wildstr++;
       if (str == str_end || *wildstr++ != *str++)
-	return(1);
+      {
+	DBUG_RETURN(1);
+      }
       if (wildstr == wildend)
-	return (str != str_end);		// Match if both are at end
+      {
+	DBUG_RETURN(str != str_end);		// Match if both are at end
+      }
       result=1;					// Found an anchor char
     }
     if (*wildstr == wild_one)
@@ -728,7 +738,7 @@ int wild_compare(const char *str,const char *str_end,
       do
       {
 	if (str == str_end)			// Skip one char if possible
-	  return (result);
+	  DBUG_RETURN(result);
 	str++;
       } while (*++wildstr == wild_one && wildstr != wildend);
       if (wildstr == wildend)
@@ -745,17 +755,22 @@ int wild_compare(const char *str,const char *str_end,
 	if (*wildstr == wild_one)
 	{
 	  if (str == str_end)
-	    return (-1);
+	  {
+	    DBUG_RETURN(-1);
+	  }
 	  str++;
 	  continue;
 	}
 	break;					// Not a wild character
       }
       if (wildstr == wildend)
-	return(0);				// Ok if wild_many is last
+      {
+	DBUG_RETURN(0);				// Ok if wild_many is last
+      }
       if (str == str_end)
-	return -1;
-
+      {
+	DBUG_RETURN(-1);
+      }
       char cmp;
       if ((cmp= *wildstr) == escape && wildstr+1 != wildend)
 	cmp= *++wildstr;
@@ -764,22 +779,30 @@ int wild_compare(const char *str,const char *str_end,
       {
 	while (str != str_end && *str != cmp)
 	  str++;
-	if (str++ == str_end) return (-1);
+	if (str++ == str_end) 
+	{ 
+	  DBUG_RETURN(-1) 
+	};
 	{
 	  int tmp=wild_compare(str,str_end,wildstr,wildend,escape);
 	  if (tmp <= 0)
-	    return (tmp);
+	  {
+	    DBUG_RETURN(tmp);
+	  }
 	}
       } while (str != str_end && wildstr[0] != wild_many);
-      return(-1);
+      DBUG_RETURN(-1);
     }
   }
-  return (str != str_end ? 1 : 0);
+  DBUG_RETURN(str != str_end ? 1 : 0);
 }
 
 
 int wild_compare(String &match,String &wild, char escape)
 {
-  return wild_compare(match.ptr(),match.ptr()+match.length(),
-		      wild.ptr(), wild.ptr()+wild.length(),escape);
+  DBUG_ENTER("wild_compare");
+  DBUG_PRINT("enter",("match='%s', wild='%s', escape='%c'"
+			  ,match.ptr(),wild.ptr(),escape));
+  DBUG_RETURN(wild_compare(match.ptr(),match.ptr()+match.length(),
+		      wild.ptr(), wild.ptr()+wild.length(),escape));
 }