[Mono-dev] Problem building with big arrays

Brandon Perry bperry.volatile at gmail.com
Wed Jun 11 00:47:41 UTC 2014


I believe you can enable big array support with recompilation.

--enable-big-arrays --with-large-heap


On Tue, Jun 10, 2014 at 7:33 PM, Neale Ferguson <NealeFerguson at verizon.net>
wrote:

> Building from head and using --trace=E
>
> [0x2000028a030:] EXCEPTION handling: System.IndexOutOfRangeException:
> Array index is out of range.
> [0x2000028a030:] EXCEPTION handling: System.TypeInitializationException:
> An exception was thrown by the type initializer for System.TermInfoDriver
> [0x2000028a030:] EXCEPTION handling: System.TypeInitializationException:
> An exception was thrown by the type initializer for System.ConsoleDriver
> [0x2000028a030:] EXCEPTION handling: System.TypeInitializationException:
> An exception was thrown by the type initializer for System.Console
> [0x2000028a030:] EXCEPTION handling: System.IndexOutOfRangeException:
> Array index is out of range.
>
> Unhandled Exception:
> Nested exception detected.
> Original Exception: at Mono.CSharp.Driver.Main (string[]) <0x0008a>
>
> Nested exception:at (wrapper stelemref) object.virt_stelemref_object
> (intptr,object) <0x00044>
> at string.Format (string,object,object) <0x00062>
> at System.Exception.get_StackTrace () <0x0011c>
> at System.Exception.ToString () <0x00230>
> at System.Exception.ToString () <0x0018e>
> at System.Exception.ToString () <0x0018e>
> at System.Exception.ToString () <0x0018e>
>
>
> [ERROR] FATAL UNHANDLED EXCEPTION: Nested exception detected.
> Original Exception: at Mono.CSharp.Driver.Main (string[]) <0x0008a>
>
> Nested exception:at (wrapper stelemref) object.virt_stelemref_object
> (intptr,object) <0x00044>
> at string.Format (string,object,object) <0x00062>
> at System.Exception.get_StackTrace () <0x0011c>
> at System.Exception.ToString () <0x00230>
> at System.Exception.ToString () <0x0018e>
> at System.Exception.ToString () <0x0018e>
> at System.Exception.ToString () <0x0018e>
>
> Using just --trace shows:
>
> 0x2000028a030 [ 16] . . . . . . . . . . . . . . . . ENTER:
> string:ToCharArray () ip: 0x2000066cf80 sp: 0x3ffffd591d8 -
> this:[STRING:0x20000801ce0:],0x2000028a030 [ 17] . . . . . . . . . . . . .
> . . . . ENTER: string:ToCharArray (int,int) ip: 0x200007407c0 sp:
> 0x3ffffd590e8 - this:[STRING:0x20000801ce0:], [INT4:0], [INT4:1],
> 0x2000028a030 [ 18] . . . . . . . . . . . . . . . . . . ENTER: (wrapper
> alloc) object:AllocVector (intptr,intptr) ip: 0x2000074095c sp:
> 0x3ffffd58fb8 - [INTPTR:0x804a9bf8], [INTPTR:0x1],
> 0x2000028a030 [ 18] . . . . . . . . . . . . . . . . . . LEAVE: (wrapper
> alloc) object:AllocVector (intptr,intptr)[System.Char[]:0x20000801d00] ip:
> 0x20000665626
> 0x2000028a030 [ 18] . . . . . . . . . . . . . . . . . . ENTER:
> string:CharCopy (char*,char*,int) ip: 0x20000740a0a sp: 0x3ffffd58fb8 -
> [PTR:(nil)], [PTR:0x20000801cf4], [INT4:1],
> 0x2000028a030 [ 19] . . . . . . . . . . . . . . . . . . . ENTER:
> string:memcpy4 (byte*,byte*,int) ip: 0x20000740da0 sp: 0x3ffffd58eb8 -
> [PTR:(nil)], [PTR:0x20000801cf4], [INT4:2],
>
> With the relevant section being:
>
>                 public unsafe char[] ToCharArray (int startIndex, int
> length)
>                 {
>                         if (startIndex < 0)
>                                 throw new ArgumentOutOfRangeException
> ("startIndex", "< 0");
>                         if (length < 0)
>                                 throw new ArgumentOutOfRangeException
> ("length", "< 0");
>                         if (startIndex > this.length - length)
>                                 throw new ArgumentOutOfRangeException
> ("startIndex", "Must be greater than the length of the string.");
>
>                         char[] tmp = new char [length];
>                         fixed (char* dest = tmp, src = this)
>                                 CharCopy (dest, src + startIndex, length);
>                         return tmp;
>                 }
>
> Which indicates new char [length] is returning NULL.
>
> Before I trace this any further, is this something that's been seen before
> with big arrays?
>
> Neale
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>



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