optimization/5969: When function is declared func(unsigned char v), v isn't truncated

[dash@xdr.com]

>Number:         5969
>Category:       optimization
>Synopsis:       When function is declared func(unsigned char v), v isn't truncated
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 14 15:46:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     David Ashley
>Release:        2.95.3 20010315 (release/MonteVista)
>Organization:
>Environment:
Irrelevant
>Description:
/* Compile with -O2 on ppc architecture */
main()
{
	tst(0x12);
	tst(0x1234);
}

tst(unsigned char v)
{
	printf("v=%x\n",v);
}

/* File prints out:
v=12
v=1234
*/
>How-To-Repeat:
Compile that program for powerpc and run it. Easy as pie.
The inportant things are:
-O2 optimization
tst must be defined after it is used.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: