From owner-freebsd-bugs  Tue Oct  5  8:50: 8 1999
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Date: Tue, 5 Oct 1999 18:43:37 +0300 (EEST)
From: netch@lucky.net (Valentin Nechayev)
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To: FreeBSD-gnats-submit@freebsd.org
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Subject: bin/14142: sendmail: mci.c: bad pointer conversion in debug print
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>Number:         14142
>Category:       bin
>Synopsis:       sendmail: mci.c: bad pointer conversion in debug print
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Oct  5 08:50:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     Valentin Nechayev
>Release:        FreeBSD 3.3-STABLE alpha
>Organization:
Lucky Net Ltd.
>Environment:

FreeBSD 3.3-STABLE on Alpha

>Description:

The following piece of mci_dump() uses bad conversion:

        snprintf(p, SPACELEFT(buf, p), "MCI@%lx: ",
                sizeof(void *) == sizeof(u_long) ?
                (u_long)(void *)mci : (u_long)(u_int)(void *)mci);
 
On Alpha architecture, conversion from void* to u_int loses significant bits.
These conversions are FreeBSD-specific; original Allman's sendmail
does not contain them.

>How-To-Repeat:

Read and compile the code ;)

>Fix:

Convert to ptrdiff_t instead of u_int (?)

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


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