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Re: Bus error [message #40072]

Fri, 09 July 2004 13:17

Foldy Lajos
Messages: 268
Registered: October 2001

Senior Member

On Fri, 9 Jul 2004, Ed Wright wrote:

>
> Question, what memory conditions can cause a Bus error after a
> .full_session_reset?
>
> Example:
>
> IDL> cell1 = ICY_CELL_DBL(10)
> % Loaded DLM: ICY.
> IDL> .full_session_reset
> IDL> cell1 = ICY_CELL_DBL(10)
> % Loaded DLM: ICY.
> IDL> .full_session_reset
> IDL> cell1 = ICY_CELL_DBL(10)
> % Loaded DLM: ICY.
> Bus error
>
> As always,
> Ed Wright
>

probably misaligned data in the DLM, which is loaded at different memory
positions. Eg. on a SUN the following simple C program causes "bus error":

int main()
{ char c[16];
int j;
for (j=0; j<8; j++) *(double*)(c+j)=1.0e0;
}

regards,
lajos

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