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Fixing compiler warnings, found "warning: int format, different type arg"

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Posted by YoshoFyre   (29 posts)  [Biography] bio
Date Wed 23 Mar 2022 06:26 PM (UTC)
Message
I am working on cleaning up the warnings the compiler has been throwing at me since day one...

in db.c, i get the following error

gcc-3.4 -c -Wall -g3  db.c
db.c: In function `do_dump':
db.c:3393: warning: int format, different type arg (arg 4)
db.c:3408: warning: int format, different type arg (arg 4)
db.c:3408: warning: int format, different type arg (arg 6)
db.c:3415: warning: int format, different type arg (arg 4)
db.c:3415: warning: int format, different type arg (arg 6)
db.c:3424: warning: int format, different type arg (arg 4)
db.c:3424: warning: int format, different type arg (arg 6)
db.c:3435: warning: int format, different type arg (arg 4)
db.c:3449: warning: int format, different type arg (arg 4)
db.c:3449: warning: int format, different type arg (arg 6)
db.c:3456: warning: int format, different type arg (arg 4)
db.c:3456: warning: int format, different type arg (arg 6)
db.c:3460: warning: int format, different type arg (arg 4)
db.c:3464: warning: int format, different type arg (arg 4)


the do_dump function looks like this

--line below is 3368
void do_dump( CHAR_DATA *ch, char *argument )
{
    int count,count2,num_pcs,aff_count;
    CHAR_DATA *fch;
    MOB_INDEX_DATA *pMobIndex;
    PC_DATA *pc;
    OBJ_DATA *obj;
    OBJ_INDEX_DATA *pObjIndex;
    ROOM_INDEX_DATA *room;
    EXIT_DATA *exit;
    DESCRIPTOR_DATA *d;
    AFFECT_DATA *af;
    FILE *fp;
    int vnum,nMatch = 0;

    /* open file */
    fclose(fpReserve);
    fp = fopen("mem.dmp","w");

    /* report use of data structures */
    
    num_pcs = 0;
    aff_count = 0;

    /* mobile prototypes */
    fprintf(fp,"MobProt	%4d (%8d bytes)\n", top_mob_index, top_mob_index * (sizeof(*pMobIndex))); 

    /* mobs */
    count = 0;  count2 = 0;
    for (fch = char_list; fch != NULL; fch = fch->next)
    {
	count++;
	if (fch->pcdata != NULL)
	    num_pcs++;
	for (af = fch->affected; af != NULL; af = af->next)
	    aff_count++;
    }
    for (fch = char_free; fch != NULL; fch = fch->next)
	count2++;

    fprintf(fp,"Mobs	%4d (%8d bytes), %2d free (%d bytes)\n", count, count * (sizeof(*fch)), count2, count2 * (sizeof(*fch)));

    /* pcdata */
    count = 0;
    for (pc = pcdata_free; pc != NULL; pc = pc->next)
	count++; 

    fprintf(fp,"Pcdata	%4d (%8d bytes), %2d free (%d bytes)\n", num_pcs, num_pcs * (sizeof(*pc)), count, count * (sizeof(*pc)));

    /* descriptors */
    count = 0; count2 = 0;
    for (d = descriptor_list; d != NULL; d = d->next)
	count++;
    for (d= descriptor_free; d != NULL; d = d->next)
	count2++;

    fprintf(fp, "Descs	%4d (%8d bytes), %2d free (%d bytes)\n", count, count * (sizeof(*d)), count2, count2 * (sizeof(*d)));

    /* object prototypes */
    for ( vnum = 0; nMatch < top_obj_index; vnum++ )
        if ( ( pObjIndex = get_obj_index( vnum ) ) != NULL )
        {
	    for (af = pObjIndex->affected; af != NULL; af = af->next)
		aff_count++;
            nMatch++;
        }

    fprintf(fp,"ObjProt	%4d (%8d bytes)\n", top_obj_index, top_obj_index * (sizeof(*pObjIndex)));


    /* objects */
    count = 0;  count2 = 0;
    for (obj = object_list; obj != NULL; obj = obj->next)
    {
	count++;
	for (af = obj->affected; af != NULL; af = af->next)
	    aff_count++;
    }
    for (obj = obj_free; obj != NULL; obj = obj->next)
	count2++;

    fprintf(fp,"Objs	%4d (%8d bytes), %2d free (%d bytes)\n", count, count * (sizeof(*obj)), count2, count2 * (sizeof(*obj)));

    /* affects */
    count = 0;
    for (af = affect_free; af != NULL; af = af->next)
	count++;

    fprintf(fp,"Affects	%4d (%8d bytes), %2d free (%d bytes)\n", aff_count, aff_count * (sizeof(*af)) ,count, count * (sizeof(*af)));

    /* rooms */
    fprintf(fp,"Rooms	%4d (%8d bytes)\n",
	top_room, top_room * (sizeof(*room)));

     /* exits */
    fprintf(fp,"Exits	%4d (%8d bytes)\n",
	top_exit, top_exit * (sizeof(*exit)));

    fclose(fp);

    /* start printing out mobile data */
    fp = fopen("mob.dmp","w");

    fprintf(fp,"\nMobile Analysis\n");
    fprintf(fp,  "---------------\n");
    nMatch = 0;
    for (vnum = 0; nMatch < top_mob_index; vnum++)
	if ((pMobIndex = get_mob_index(vnum)) != NULL)
	{
	    nMatch++;
	    fprintf(fp,"#%-4d %3d active %3d killed     %s\n",
		pMobIndex->vnum,pMobIndex->count,
		pMobIndex->killed,pMobIndex->short_descr);
	}
    fclose(fp);

    /* start printing out object data */
    fp = fopen("obj.dmp","w");

    fprintf(fp,"\nObject Analysis\n");
    fprintf(fp,  "---------------\n");
    nMatch = 0;
    for (vnum = 0; nMatch < top_obj_index; vnum++)
	if ((pObjIndex = get_obj_index(vnum)) != NULL)
	{
	    nMatch++;
	    fprintf(fp,"#%-4d %3d active %3d reset      %s\n",
		pObjIndex->vnum,pObjIndex->count,
		pObjIndex->reset_num,pObjIndex->short_descr);
	}

    /* close file */
    fclose(fp);
    fpReserve = fopen( NULL_FILE, "r" );
}
--line above is 3502


For example.
db.c:3393: warning: int format, different type arg (arg 4)
correlates with
fprintf(fp,"MobProt %4d (%8d bytes)\n", top_mob_index, top_mob_index * (sizeof(*pMobIndex)));

This is just a compiler warning, and the mud seems to work, but i cannot figure out how to resolve the warning.

Any suggestions? thanks!
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Posted by Fiendish   USA  (2,513 posts)  [Biography] bio   Global Moderator
Date Reply #1 on Wed 23 Mar 2022 07:15 PM (UTC)

Amended on Wed 23 Mar 2022 07:19 PM (UTC) by Fiendish

Message
 top_mob_index * (sizeof(*pMobIndex))
is an unsigned int value, but
%8d

is a signed int formatter. Try changing the %8d to %8u, which is the unsigned equivalent.

https://github.com/fiendish/aardwolfclientpackage
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Posted by YoshoFyre   (29 posts)  [Biography] bio
Date Reply #2 on Wed 23 Mar 2022 08:18 PM (UTC)
Message
Fiendish said:

 top_mob_index * (sizeof(*pMobIndex))
is an unsigned int value, but
%8d

is a signed int formatter. Try changing the %8d to %8u, which is the unsigned equivalent.


gave that a try

i get
db.c: In function `do_dump':
db.c:3393: warning: unsigned int format, different type arg (arg 4)

with
fprintf(fp,"MobProt	%4d (%8u bytes)\n", top_mob_index, top_mob_index * (sizeof(*pMobIndex)));
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Posted by Nick Gammon   Australia  (22,966 posts)  [Biography] bio   Forum Administrator
Date Reply #3 on Wed 23 Mar 2022 10:54 PM (UTC)
Message
You need %8lu

The "l" (lower-case L) tells the compiler it is a LONG unsigned int.

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by YoshoFyre   (29 posts)  [Biography] bio
Date Reply #4 on Wed 23 Mar 2022 11:29 PM (UTC)
Message
Nick Gammon said:

You need %8lu

The "l" (lower-case L) tells the compiler it is a LONG unsigned int.


that worked!


void do_dump( CHAR_DATA *ch, char *argument )
{
    int count,count2,num_pcs,aff_count;
    CHAR_DATA *fch;
    MOB_INDEX_DATA *pMobIndex;
    PC_DATA *pc;
    OBJ_DATA *obj;
    OBJ_INDEX_DATA *pObjIndex;
    ROOM_INDEX_DATA *room;
    EXIT_DATA *exit;
    DESCRIPTOR_DATA *d;
    AFFECT_DATA *af;
    FILE *fp;
    int vnum,nMatch = 0;

    /* open file */
    fclose(fpReserve);
    fp = fopen("mem.dmp","w");

    /* report use of data structures */
    
    num_pcs = 0;
    aff_count = 0;

    /* mobile prototypes */
    fprintf(fp,"MobProt	%4d (%8lu bytes)\n", top_mob_index, top_mob_index * (sizeof(*pMobIndex))); 

    /* mobs */
    count = 0;  count2 = 0;
    for (fch = char_list; fch != NULL; fch = fch->next)
    {
	count++;
	if (fch->pcdata != NULL)
	    num_pcs++;
	for (af = fch->affected; af != NULL; af = af->next)
	    aff_count++;
    }
    for (fch = char_free; fch != NULL; fch = fch->next)
	count2++;

    fprintf(fp,"Mobs	%4d (%8lu bytes), %2d free (%lu bytes)\n", count, count * (sizeof(*fch)), count2, count2 * (sizeof(*fch)));

    /* pcdata */
    count = 0;
    for (pc = pcdata_free; pc != NULL; pc = pc->next)
	count++; 

    fprintf(fp,"Pcdata	%4d (%8lu bytes), %2d free (%lu bytes)\n", num_pcs, num_pcs * (sizeof(*pc)), count, count * (sizeof(*pc)));

    /* descriptors */
    count = 0; count2 = 0;
    for (d = descriptor_list; d != NULL; d = d->next)
	count++;
    for (d= descriptor_free; d != NULL; d = d->next)
	count2++;

    fprintf(fp, "Descs	%4d (%8lu bytes), %2d free (%lu bytes)\n", count, count * (sizeof(*d)), count2, count2 * (sizeof(*d)));

    /* object prototypes */
    for ( vnum = 0; nMatch < top_obj_index; vnum++ )
        if ( ( pObjIndex = get_obj_index( vnum ) ) != NULL )
        {
	    for (af = pObjIndex->affected; af != NULL; af = af->next)
		aff_count++;
            nMatch++;
        }

    fprintf(fp,"ObjProt	%4d (%8lu bytes)\n", top_obj_index, top_obj_index * (sizeof(*pObjIndex)));


    /* objects */
    count = 0;  count2 = 0;
    for (obj = object_list; obj != NULL; obj = obj->next)
    {
	count++;
	for (af = obj->affected; af != NULL; af = af->next)
	    aff_count++;
    }
    for (obj = obj_free; obj != NULL; obj = obj->next)
	count2++;

    fprintf(fp,"Objs	%4d (%8lu bytes), %2d free (%lu bytes)\n", count, count * (sizeof(*obj)), count2, count2 * (sizeof(*obj)));

    /* affects */
    count = 0;
    for (af = affect_free; af != NULL; af = af->next)
	count++;

    fprintf(fp,"Affects	%4d (%8lu bytes), %2d free (%lu bytes)\n", aff_count, aff_count * (sizeof(*af)) ,count, count * (sizeof(*af)));

    /* rooms */
    fprintf(fp,"Rooms	%4d (%8lu bytes)\n", top_room, top_room * (sizeof(*room)));

     /* exits */
    fprintf(fp,"Exits	%4d (%8lu bytes)\n", top_exit, top_exit * (sizeof(*exit)));

    fclose(fp);

    /* start printing out mobile data */
    fp = fopen("mob.dmp","w");

    fprintf(fp,"\nMobile Analysis\n");
    fprintf(fp,  "---------------\n");
    nMatch = 0;
    for (vnum = 0; nMatch < top_mob_index; vnum++)
	if ((pMobIndex = get_mob_index(vnum)) != NULL)
	{
	    nMatch++;
	    fprintf(fp,"#%-4d %3d active %3d killed     %s\n",
		pMobIndex->vnum,pMobIndex->count,
		pMobIndex->killed,pMobIndex->short_descr);
	}
    fclose(fp);

    /* start printing out object data */
    fp = fopen("obj.dmp","w");

    fprintf(fp,"\nObject Analysis\n");
    fprintf(fp,  "---------------\n");
    nMatch = 0;
    for (vnum = 0; nMatch < top_obj_index; vnum++)
	if ((pObjIndex = get_obj_index(vnum)) != NULL)
	{
	    nMatch++;
	    fprintf(fp,"#%-4d %3d active %3d reset      %s\n", pObjIndex->vnum,pObjIndex->count, pObjIndex->reset_num,pObjIndex->short_descr);
	}

    /* close file */
    fclose(fp);
    fpReserve = fopen( NULL_FILE, "r" );
}


i applied that to every statement of "bytes" and it worked.

Thank you.
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