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➜ Programming
➜ General
➜ GDB oddity
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Posted by
| Greven
Canada (835 posts) Bio
|
Date
| Sun 10 Oct 2004 09:51 PM (UTC) Amended on Sun 10 Oct 2004 09:53 PM (UTC) by Greven
|
Message
| Working in GDB trying to figure something out, here is the code for (timer = ch->first_timer; timer; timer = timer_next)
{
int sn;
timer_next = timer->next;
for (sn = 0; sn < top_sn; sn++)
if ( *skill_table[sn]->skill_fun == timer->do_fun )
break;
if ( sn == top_sn )
bug("Null skill for fast engineer");
if (--timer->count <= 0
|| (!IS_NPC(ch) && skill_table[sn]->guild == ENGINEERING_ABILITY
&& IS_SET(ch->pcdata->flags,PCFLAG_FASTENGINEER) ))
{
if (timer->type == TIMER_DO_FUN)
{
int tempsub;
tempsub = ch->substate;
ch->substate = timer->value;
(timer->do_fun) (ch, "");
if (char_died(ch))
break;
ch->substate = tempsub;
}
extract_timer(ch, timer);
}
}
Its quite clear that sn is defined, however...
Quote: (gdb) bt
#0 0x40161ac1 in kill () from /lib/libc.so.6
#1 0x401616eb in raise () from /lib/libc.so.6
#2 0x40163127 in abort () from /lib/libc.so.6
#3 0x080bcde2 in SegVio (signum=11) at comm.c:503
#4 <signal handler called>
#5 0x080e2b04 in violence_update() () at fight.c:262
#6 0x0818b8c4 in update_handler() () at update.c:3148
#7 0x080bd313 in game_loop() () at comm.c:823
#8 0x080bcb6a in main (argc=8, argv=0xbffff1b4) at comm.c:362
#9 0x4014dd06 in __libc_start_main () from /lib/libc.so.6
(gdb) frame 5
#5 0x080e2b04 in violence_update() () at fight.c:262
262 if (--timer->count <= 0
Current language: auto; currently c++
(gdb) print sn
No symbol "sn" in current context.
(gdb) I would assume that GDB cannot access sn because its of where its defined. Is this normal for GDB, I've never noticed this before. |
Nobody ever expects the spanish inquisition!
darkwarriors.net:4848
http://darkwarriors.net | Top |
|
Posted by
| Zeno
USA (2,871 posts) Bio
|
Date
| Reply #1 on Sun 10 Oct 2004 10:00 PM (UTC) |
Message
| Hrm. Do 'list' in frame 5. Whats it display? |
Zeno McDohl,
Owner of Bleached InuYasha Galaxy
http://www.biyg.org | Top |
|
Posted by
| Greven
Canada (835 posts) Bio
|
Date
| Reply #2 on Sun 10 Oct 2004 10:24 PM (UTC) |
Message
| The actual bug in the code is not the issue, I was just curious as to why it wouldn't print sn.
If your curious though:257 break;
258
259 if ( sn == top_sn )
260 bug("Null skill for fast engineer");
261
262 if (--timer->count <= 0
263 || (!IS_NPC(ch) && skill_table[sn]->guild == ENGINEERING_ABILITY
264 && IS_SET(ch->pcdata->flags,PCFLAG_FASTENGINEER) ))
265 {
266 if (timer->type == TIMER_DO_FUN)
|
Nobody ever expects the spanish inquisition!
darkwarriors.net:4848
http://darkwarriors.net | Top |
|
Posted by
| Zeno
USA (2,871 posts) Bio
|
Date
| Reply #3 on Sun 10 Oct 2004 10:28 PM (UTC) |
Message
| I know. Just wanted to make sure gdb wasn't having troubles, and wouldn't display all the lines. Or if it wasn't in the loop. I think its just the way gdb acts. You'll have to set a breakpoint, probably. |
Zeno McDohl,
Owner of Bleached InuYasha Galaxy
http://www.biyg.org | Top |
|
Posted by
| Nick Gammon
Australia (23,133 posts) Bio
Forum Administrator |
Date
| Reply #4 on Mon 11 Oct 2004 07:04 AM (UTC) |
Message
|
Quote:
#5 0x080e2b04 in violence_update() () at fight.c:262
262 if (--timer->count <= 0
Current language: auto; currently c++
This puzzles me. You are debugging a .c file but it says the language is c++. This might cause confusion because of C++ name mangling.
Maybe type "set language c" and try again. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | Top |
|
Posted by
| Greven
Canada (835 posts) Bio
|
Date
| Reply #5 on Mon 11 Oct 2004 07:08 AM (UTC) Amended on Mon 11 Oct 2004 07:09 AM (UTC) by Greven
|
Message
| Yeah, that was it, I was able print sn, didn't think it would make a difference.
I'm compiling in c++ for the stricter compile rules, thats why its set to c++. |
Nobody ever expects the spanish inquisition!
darkwarriors.net:4848
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|
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