[Simh] Recent build crashes on OSX

[Michael Huff]

On 2/17/16 11:32 AM, Mark Pizzolato wrote:
> Hi Michael,
>
>
> Based on other discussion which has already taken place about this,
> I would appreciate it if you could create an issue at https://github.com/simh/simh/issues
> In your description please provide the above AND:
> 1) The contents configuration file you are running the simulator with
$ cat boot.ini
set cpu idle=32v
set rq0 ra81
att rq0 rq.dsk
set rq1 dis
set rq2 dis
set rq3 dis
set rp dis
set lpt dis
set rl dis
set tq dis
set tu dis
att ts 43.tap
set tti 7b
set tto 7b
load -o boot42 0
d r10 9
d r11 0
set dz lines=8
att dz 8888
set dz 7b
run 2

> 2) The output of:
> 	sim> SHOW VERSION
>       on both your failing OSX environment AND the succeeding Linux Mint environment
OSX:
sim> show version
VAX 11/780 simulator V4.0-0 Beta
     Simulator Framework Capabilities:
         64b data
         64b addresses
         Ethernet Packet transports:PCAP:TAP:VDE:NAT:UDP
         Idle/Throttling support is available
         Virtual Hard Disk (VHD) support
         Asynchronous I/O support
         FrontPanel API Version 2
     Host Platform:
         Compiler: GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)
         Simulator Compiled: Feb 16 2016 at 11:09:07
         Memory Access: Little Endian
         Memory Pointer Size: 64 bits
         Large File (>2GB) support
         SDL Video support: No Video Support
         RegEx support for EXPECT commands
         OS clock resolution: 1ms
         Time taken by msleep(1): 2ms
         OS: Darwin Michaels-iMac.local 15.3.0 Darwin Kernel Version 
15.3.0: Thu Dec 10 18:40:58 PST 2015; 
root:xnu-3248.30.4~1/RELEASE_X86_64 x86_64
         git commit id: aadd66c7
sim>

Linux:
sim> show version
VAX 11/780 simulator V4.0-0 Beta
     Simulator Framework Capabilities:
         64b data
         64b addresses
         Ethernet Packet transports:PCAP:TAP:VDE:NAT:UDP
         Idle/Throttling support is available
         Virtual Hard Disk (VHD) support
         RAW disk and CD/DVD ROM support
         Asynchronous I/O support
         FrontPanel API Version 2
     Host Platform:
         Compiler: GCC 4.8.4
         Simulator Compiled: Feb 16 2016 at 15:41:18
         Memory Access: Little Endian
         Memory Pointer Size: 64 bits
         Large File (>2GB) support
         SDL Video support: No Video Support
         RegEx support for EXPECT commands
         OS clock resolution: 1ms
         Time taken by msleep(1): 4ms
         OS: Linux michael-VirtualBox 3.13.0-24-generic #47-Ubuntu SMP 
Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
         git commit id: aadd66c7
> 3) Possibly a pointer to the disk image you're booting (compressed and visible in a Google
> Drive or other publically accessible file exchange environment (web site, Sky Drive, DropBox, etc...).
https://drive.google.com/open?id=0B1H__PYsoMRtaTdkODh3cjNncDg
> 4) As complete a description of your OSX system and compiler version as you
> can easily put together.
It's a mid-2011 21.5 inch imac, 12 gigs of ram, i5 quadcore cpu running 
at 2.4ghz, OSX 10.11.3, 2015 XCode (I'm not sure where the version info 
for that is), gcc -v shows:
gcc -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr 
--with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 7.0.2 (clang-700.1.81)
Target: x86_64-apple-darwin15.3.0
Thread model: posix

I'm going to copy and paste your questions and my answers into a comment 
on the github issue for reference.
> If I can reproduce the problem it certainly can be fixed.  Paul's observations about
> "does break strict-aliasing rules" might be relevant.
>
> Thanks.
>
> - Mark