[M3devel] more crashers

[Jay K]

Could be. I've also seen it on PPC_DARWIN a while ago. I only recall seeing it on sparc and ppc.
It doesn't always occur.
 
 
Here is the m3browser crash on a system that can be debugged.
See why I want the full paths in the debug info?
 

C:\Users\jay\Desktop>\cygwin\bin\ssh xobsd.
$ cd /cm3
$ cd bin
$ export DISPLAY=192.168.1.120:0.0
$ gdb ./m3browser
GNU gdb 6.3
This GDB was configured as "i386-unknown-openbsd4.5"...
(gdb) r
Starting program: /home/jay/cm3/bin/m3browser
Program received signal SIGSEGV, Segmentation fault.
[Switching to process 31063, thread 0x7eafe800]
0x01592fd4 in Text__Length (M3_Bd56fi_t=0x0) at ../src/text/Text.m3:16
16          t.get_info (i);
(gdb) bt
#0  0x01592fd4 in Text__Length (M3_Bd56fi_t=0x0) at ../src/text/Text.m3:16
#1  0x09fd9464 in ID__Add (M3_Bd56fi_x=0x0) at ../src/ID.m3:48
#2  0x1c01e644 in Main_M3 (M3_AcxOUs_mode=1) at ../src/Main.m3:37
#3  0x0156f1bc in RTLinker__RunMainBody (M3_DjPxE3_m=0x3c003ec0)
    at ../src/runtime/common/RTLinker.m3:399
#4  0x0156e576 in RTLinker__AddUnitI (M3_DjPxE3_m=0x3c003ec0)
    at ../src/runtime/common/RTLinker.m3:113
#5  0x0156e604 in RTLinker__AddUnit (M3_DjPxE5_b=0x1c01e54d)
    at ../src/runtime/common/RTLinker.m3:122
#6  0x1c004676 in main (argc=1, argv=0xcfbf6a3c, envp=0xcfbf6a44)
    at _m3main.mc:4

 
 - Jay


________________________________
> From: hosking at cs.purdue.edu
> To: jay.krell at cornell.edu
> Date: Sun, 16 Aug 2009 15:26:49 -0400
> CC: m3devel at elegosoft.com
> Subject: Re: [M3devel] more crashers
>
> Could this be endianness-related?
>
> On 16 Aug 2009, at 15:21, Jay K wrote:
>
>
> I see the assertion failure on PPC_LINUX too.
> I tried VAR defaultStackSize := 1024 * 1024; (not sure why there was any suspicion of stack size).
>
>
> Debugging doesn't work PPC_LINUX.
>
>
> jay at plin:/cm3/bin$ gdb ./cm3
> GNU gdb 6.8-debian
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "powerpc-linux-gnu"...
> break ma(gdb) break main
> Breakpoint 1 at 0x86fc4: file _m3main.mc, line 2.
> (gdb) r
> Starting program: /home/jay/cm3/bin/cm3
> Warning:
> Cannot insert breakpoint 1.
> Error accessing memory address 0x86fc4: Input/output error.
>
>
> No problem with C:
>
>
> jay at plin:/cm3/bin$ echo "main(){}"> 1.c
> jay at plin:/cm3/bin$ gcc -g 1.c
> jay at plin:/cm3/bin$ gdb ./a.out
> GNU gdb 6.8-debian
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "powerpc-linux-gnu"...
> (gdb) break main
> Breakpoint 1 at 0x10000448: file 1.c, line 1.
> (gdb) r
> Starting program: /home/jay/cm3/bin/a.out
> Breakpoint 1, main () at 1.c:1
> 1 main(){}
> (gdb)
>
>
> jay at plin:/cm3/bin$ gcc -gstabs+ 1.c
> jay at plin:/cm3/bin$ gdb ./a.out
> GNU gdb 6.8-debian
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "powerpc-linux-gnu"...
> (gdb) break main
> Breakpoint 1 at 0x10000448: file 1.c, line 1.
> (gdb) r
> Starting program: /home/jay/cm3/bin/a.out
> Breakpoint 1, main () at 1.c:1
> 1 main(){}
>
>
> jay at plin:/cm3/bin$ gcc -gstabs 1.c
> jay at plin:/cm3/bin$ gdb ./a.out
> GNU gdb 6.8-debian
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "powerpc-linux-gnu"...
> (gdb) break main
> Breakpoint 1 at 0x10000448: file 1.c, line 1.
> (gdb) r
> Starting program: /home/jay/cm3/bin/a.out
> Breakpoint 1, main () at 1.c:1
> 1 main(){}
> (gdb)
>
>
> - Jay
>
>
> ----------------------------------------
> From: jay.krell at cornell.edu
> To: m3devel at elegosoft.com
> Subject: more crashers
> Date: Sun, 16 Aug 2009 10:06:15 +0000
>
>
> This is head on SOLgnu:
> I'll try another and debug and see if fix is easy.
>
> -bash-3.00$ ./m3browser
>
> ***
> *** runtime error:
> *** Segmentation violation - possible attempt to dereference NIL
> *** pc = 0xfe484f04 = String16_M3 + 0xe0 in ../src/text/String16.m3
> ***
>
> -bash-3.00$ ./visobliq
> Internal Obliq interpreter installed...
> Establishing 'templates'
> (Created frame 'templates')
> let
> Templates =
> {boolean=> ... ,
> browser=> ... ,
> button=> ... ,
> choice=> ... ,
> filebrowser=> ... ,
> form=> ... ,
> frame=> ... ,
> hscroll=> ... ,
> menu=> ... ,
> numeric=> ... ,
> text=> ... ,
> textedit=> ... ,
> typein=> ... ,
> video=> ... ,
> vscroll=> ... }
> Establishing 'vowidgets'
> (Created frame 'vowidgets')
> ok
> Establishing 'vocheckpt'
> (Created frame 'vocheckpt')
> ok
> Establishing 'volib'
> (Created frame 'volib')
> Segmentation Fault (core dumped)
> -bash-3.00$
>
>