ZSnes V1.42 crashes immediately in FreeBSD

Sol · Post by **Sol** » Mon Jan 24, 2005 9:47 pm

Perhaps someone made a mistake putting ZSnes V1.42 in the ports tree of FreeBSD, however, here is the error in case it's a problem with ZSnes:

ZSNES v1.42 (c) 1997-2005, ZSNES Team

Be sure to check http://www.zsnes.com/ for the latest version.
Please report crashes to zsnes-devel@lists.sourceforge.net.

ZSNES is written by the ZSNES Team (See AUTHORS.TXT)
ZSNES comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions;
please read 'LICENSE' thoroughly before doing so.

Use ZSNES -? for command line definitions.

zsnes in free(): error: junk pointer, too high to make sense
Abort trap

Note that 1.40 compiles and runs great (same with 1.36).

Post by **Nach** » Mon Jan 24, 2005 9:53 pm

Compile ZSNES yourself.

Sol · Post by **Sol** » Mon Jan 24, 2005 11:08 pm

Sorry let me explain a little better.

The ports tree is the source tree to ports to FreeBSD.

In short, I did compile it myself.

Post by **Nach** » Mon Jan 24, 2005 11:20 pm

Compile a debug build and get a back trace.

Sol · Post by **Sol** » Mon Jan 24, 2005 11:50 pm

Hrm, never done this before

I compiled ZSnes V1.42 with -g, then executed it with gdb.

The "bt' command says "No stack."

I'll let you know if I figure this out

Post by **Nach** » Mon Jan 24, 2005 11:53 pm

You configure ZSNES with debug=yes, then make clean and make.

Sol · Post by **Sol** » Tue Jan 25, 2005 5:27 am

Did that, got 'zsnesd'

Same crash, so it's not the optimizations causing it...however I'm still getting the "No stack." with gdb. I have a feeling my issues with gdb are my own though, not zsnes.

CyberBotX · Post by **CyberBotX** » Fri Feb 25, 2005 3:20 am

I'm not sure if this will help any, but I get the same free() error with both 1.41 and 1.42, the following is after compiling both 1.41 and 1.42 on my FreeBSD 5.3 system. Only changes I needed to make was to have the Makefile use some extra -I and flags when compiling because FreeBSD puts it's files for OpenGL into the /usr/X11R6 folder, not the /usr/local folder.

Code: Select all

[kirby /shared/zsnes_1_41/src]# ./zsnes

ZSNES v1.41 (c) 1997-2005, ZSNES Team

Be sure to check http://www.zsnes.com/ for the latest version.
Please report crashes to zsnes-devel@lists.sourceforge.net.

ZSNES is written by the ZSNES Team (See AUTHORS.TXT)
ZSNES comes with ABSOLUTELY NO WARRANTY.  This is free software,
and you are welcome to redistribute it under certain conditions;
please read 'LICENSE' thoroughly before doing so.

Use ZSNES -? for command line definitions.

zsnes in free(): error: junk pointer, too high to make sense
Abort (core dumped)

(Same exact thing with 1.42)

Now, I did try to compile it with debugging support, but for some reason, nasm cores during the compile of cpu/addrni.asm when debugging is turned on, but doesn't if I don't turn on debugging.

Now, oddly enough, 1.40 compiles and runs perfectly fine under FreeBSD. Puzzling, to say the least.

Post by **Nach** » Fri Feb 25, 2005 3:32 am

Which version of NASM?

CyberBotX · Post by **CyberBotX** » Fri Feb 25, 2005 3:51 am

[kirby /win2k/SNES Roms]# nasm -v
NASM version 0.98.39 compiled on Jan 25 2005

Post by **Nach** » Fri Feb 25, 2005 3:52 am

Is CVS working any better for you?

CyberBotX · Post by **CyberBotX** » Fri Feb 25, 2005 3:55 am

Well, if you mean the WIP, I tried the latest one (2/10) and it has the same crash error. As far as compiling the latest WIP with debug=yes sent to configure, same core with nasm.

CyberBotX · Post by **CyberBotX** » Sat Feb 26, 2005 12:22 am

Well, this might prove helpful to you guys. I looked at what differences in free() commands there are between 1.40 and 1.41, and I found that you guys added in a free(homedir) command into the obtaindir() function of linux/zfilew.c. I think the problem is that getenv in FreeBSD doesn't allocate memory in the program, so when homedir is successfully assigned the result of getenv("HOME") and it's later tried to be freed, it fails because the memory being used is outside the ZSNES program memory space. I tried to add a simple int that is initialized to 0 before that getenv() call and if the getenv call fails, it'll set that int to 1, and then before the free(homedir) I put in an if to check if that int is a 1 or not, and if it was, then do the free(), and that stopped ZSNES from crashing on loading under my system. I hope this helps out.