From dan Thu Jan 12 17:37:34 1995
From: Denis Nicole <dan>
Message-Id: <4259.9501121737@orca.ecs.soton.ac.uk>
Subject: Compiler bug report
To: rob@pact.nl
Date: Thu, 12 Jan 1995 17:37:30 +0000 (GMT)
Cc: dan (Denis Nicole)
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Status: O

Rob/

Rajini has found a few more compiler bugs while trying to port XPVM to
the T9000.  I have copied the xpvm.tar.gz file into directory
/pub/transputer/t9000 on the ftp server ecs.soton.ac.uk.

> 	The sources and executable of XPVM are in the tar file 
> ~rs1/release/xpvm.tar.gz. The executable file is
> xpvm/pvm3/xpvm/src/T9000/xpvm. The symbol table of this file seems
> to be broken. GDB and also the ACE utilities `prcoff' and `dump'
> dump core when trying to read the symbol table. The rest of the
> file ( file headers and section headers ) seem to be OK.
> 
> 	While compiling 'wish' for the T9, the compiler generated
> 'core stack overflow' on the following pieces of code. They could be 
> compiled after splitting the statements to smaller statements. All the
> statements involve conversion of double to int.
> 
> tcl/tclExpr.c
> 	args[i].intValue = valuePtr->doubleValue;
> 
> 
> wish/tk3d.c
> 	int i;
> 	double tangent, cosine;
>         for (i = 0; i <= 128; i++) {
>             tangent = i/128.0;
>             cosine = 128/cos(atan(tangent)) + .5;
>             shiftTable[i] = cosine;
>         }
> 
> wish/tkConvPs.c
>         sprintf(string, "%d %d %d %d",
>                 (int) (psInfo.pageX + psInfo.scale*deltaX),
>                 (int) (psInfo.pageY + psInfo.scale*deltaY),
>                 (int) (psInfo.pageX + psInfo.scale*(deltaX + psInfo.width)
>                         + 1.0),
>                 (int) (psInfo.pageY + psInfo.scale*(deltaY + psInfo.height)
>                         + 1.0));
> 
> The following library functions do not work on the T9.
> 	getuid(): always returns -1
> 	stat()  : always returns -1
> 	_exit() : does not allow other tasks to run.
> 	pow and modf are not resolved
> 
>