toolchain/48878: i386 gcc48 cc1plus stuck building boost-libs

[jdbaker%mylinuxisp.com@localhost]

>Number:         48878
>Category:       toolchain
>Synopsis:       i386 gcc48 cc1plus stuck building boost-libs
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 05 23:10:00 +0000 2014
>Originator:     John D. Baker
>Release:        NetBSD/i386-6.99.43, pkgsrc-2014Q1
>Organization:
>Environment:
NetBSD gx260a 6.99.43 NetBSD 6.99.43 (NO_DRM) #31: Wed Jun  4 09:55:06 CDT 2014 
 
sysop%verthandi.technoskunk.fur@localhost:/d0/build/current/obj/i386/sys/arch/i386/compile/NO_DRM
 i386

>Description:
Attempting to build devel/boost-libs on recent i386-current (i.e, any
which have gcc 4.8.3) results in the c++ backend "cc1plus" to get stuck
in what seems to be an infinite loop as follows:

  PID TTY    STAT      TIME COMMAND
19253 pts/0- R    423:14.59 /usr/libexec/cc1plus -quiet -I . -I 
libs/math/src/tr1 -I /var/tmp/pkgsrc/devel/boost-libs/work/.buildlink/include 
-D_REENTRANT -D_PTHREADS -D BOOST_ALL_NO_LIB=1 -D BOOST_BUILD_PCH_ENABLED -D 
NDEBUG libs/math/build/../src/tr1/pch.hpp -quiet -dumpbase pch.hpp 
-mtune=nocona -march=i486 -auxbase-strip 
bin.v2/libs/math/build/gcc-4.8.3/release/link-static/threading-multi/../src/tr1/pch.hpp.gch
 -O3 -Wno-inline -Wall -std=c++11 -finline-functions -fvisibility=hidden -o 
/var/tmp//ccrawH4h.s --output-pch= 
bin.v2/libs/math/build/gcc-4.8.3/release/link-static/threading-multi/../src/tr1/pch.hpp.gch
 

amd64 gcc48 does not exhibit this behavior.
>How-To-Repeat:
Attempt to build devel/boost-libs on i386 with gcc 4.8.3 (other ports?).
>Fix: