lack of quotes in expression with string type causes double free

[kantarjiev]

A mapfile with the following works fine:

CLASSITEM "CONTRACC" CLASS

NAME "Controlled Access" EXPRESSION "Y"

but if I try to complicate it as follows, it breaks, with my log showing

* glibc detected * double free or corruption (fasttop): 0x08140898 *

CLASS

NAME "Controlled Access FC1" EXPRESSION (([FUNC_CLASS] eq "1") and ([CONTRACC] eq "Y"))

However, if I quote the item name:

CLASS

NAME "Controlled Access FC1" EXPRESSION (('[FUNC_CLASS]' eq '1') and ([CONTRACC] eq 'Y'))

it doesn't creash *and* provides the class I'm after.

I'm using the prepackaged server from fgs-mapserver_5.0.2-fgs_1.0.0-linux-i386.bin