bin/47840: awk string comparison of integer constant

[dholland%eecs.harvard.edu@localhost]

>Number:         47840
>Category:       bin
>Synopsis:       awk string comparison of integer constant
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 20 05:30:01 +0000 2013
>Originator:     David A. Holland
>Release:        NetBSD 6.99.17 (20130321)
>Organization:
>Environment:
System: NetBSD macaran 6.99.17 NetBSD 6.99.17 (MACARAN) #18: Thu Mar 21 
13:12:01 EDT 2013 root@macaran:/usr/src/sys/arch/amd64/compile/MACARAN amd64
Architecture: x86_64
Machine: amd64
>Description:

Observe the following curious behavior:

macaran% jot 15 1 | awk '{ a[$1] = ($1 < 10); } END { for (k in a) { print k, 
a[k], (k < 10); }}'
2 1 0
3 1 0
4 1 0
5 1 0
6 1 0
7 1 0
8 1 0
9 1 0
10 0 0
11 0 0
12 0 0
13 0 0
14 0 0
15 0 0
1 1 1

Note that k < 10 is evaluated as a string comparison.

Is this required by some standard? gawk does the same thing, but it
definitely violates the POLA.

>How-To-Repeat:

as above

>Fix:

dunno