www/firefox52 internal compiler error on NetBSD 8.0_RC1 amd64

[Mayuresh <mayuresh%acm.org@localhost>]

  /usr/pkgsrc/www/firefox52/work/build/dom/presentation/Unified_cpp_dom_presentation0.cpp
g++: internal compiler error: Killed (program cc1plus received signal 9)

# uname -a
NetBSD localhost 8.0_RC1 NetBSD 8.0_RC1 (GENERIC.201804191727Z) amd64

# which g++
/usr/bin/g++

# g++ --version
g++ (nb2 20180327) 5.5.0

Do not know whether it matters, but this is on a vultr instance with 512MB
RAM.


I am trying firefox52, because while www/firefox (59) builds fine, it's
behaving rather strangely. E.g. the "tab crashed" error comes often. Some
submit buttons don't have any effect etc. Besides many plugins are not
compatible with firefox 59.

If there are any known quirks to get firefox 59 work please do share.

Regarding above error, shall I be trying any alternative compiler from
pkgsrc?

Mayuresh