[Bug 194823] New: "bsdgrep -E { /dev/null" core dumps

John D. Hendrickson johnandsara2 at cox.net
Wed Nov 5 23:47:43 UTC 2014

bugzilla-noreply at freebsd.org wrote:
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194823
>             Bug ID: 194823
>            Summary: "bsdgrep -E { /dev/null" core dumps
>            Product: Base System
>            Version: 9.3-RELEASE
>           Hardware: Any
>                 OS: Any
>             Status: Needs Triage
>           Severity: Affects Some People
>           Priority: ---
>          Component: bin
>           Assignee: freebsd-bugs at FreeBSD.org
>           Reporter: lidl at pix.net
> On my 9.3-RELEASE machine, 'bsdgrep -E { /dev/null' core-dumps.
> Noticed on an amd64 machine:
> FreeBSD xxx.pix.net 9.3-RELEASE-p3 FreeBSD 9.3-RELEASE-p3 #0: Mon Oct 20
> 15:08:33 UTC 2014    
> root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64
> Also happens on a mips64 machine, running HEAD:
> FreeBSD xxx.pix.net 11.0-CURRENT FreeBSD 11.0-CURRENT #4 r273585M: Mon Oct 27
> 19:49:36 UTC 2014     lidl at xxx.pix.net:/usr/obj/usr/src/sys/ERL  mips
> And on a sparc64 machine, running 10.1-ish code:
> FreeBSD xxx.pix.net 10.1-PRERELEASE FreeBSD 10.1-PRERELEASE #1 r273165: Thu Oct
> 16 19:30:46 UTC 2014     lidl at xxx.pix.net:/usr/obj/usr/src/sys/GENERIC  sparc64

i could be wrong

but i dont' think unix strives to make base binaries bloated to such 
effect that when used incorrectly there is never an error message or 
quick C header exit (core dumps being a kernel option)

your supposed to strive to use it correctly, not strive to find ways to 
use it incorrectly

how big and slow and complicated will all the binaries be if they must 
stop and check for every possible mis-use ?

many use fscanf to when reading args.  that's easy to "core dump"

but using microsoft outlook to import args is "hardly an option"

sure there is some in-between.  but an expectation to hack an IEEE app 
which could effect (thousands of people?) every time you find out how 
not to use it - it just shouldn't be done.  it needs to be looked at by 
IEE.  you realize that right?  it can't be hacked.  doing so would be 

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