devel/boost seems to trigger a g++ bug on alpha

[Simon Barner]

Hi,

I am the maintainer of that port, and I just received a port build error
log from Kris.

It seems the devel/boost port is triggering a g++ bug on alpha: While
other c++ compile fine, cregex.cpp seems to cause g++ to consume all
virtual memory.

Could somebody with access to an alpha machine please verify this?
You can enable a verbose build with the port's VERBOSE_BUILD option.

The log shows that g++ is optimizing for a specific CPU. Is that the
cause for the error, i.e. does it work without these optimizations?

Given, that it's really a g++ bug: How should I proceed from here?
File a FreeBSD PR? File a gcc bug report?

Thanks in advance for your help,
 Simon

===>  Building for boost-1.31.0

Selected options:
(see the Makefile for a description of available tunables)

o Debugging symbols....no
o Thread support.......yes
o Extra optimization...no
o Python support.......no

[...]

gcc-C++-action bin/boost/libs/regex/build/libboost_regex.so.1/gcc/release/shared-linkable-true/threading-multi/cpp_regex_traits.o
gcc-C++-action bin/boost/libs/regex/build/libboost_regex.so.1/gcc/release/shared-linkable-true/threading-multi/cregex.o
virtual memory exhausted: Cannot allocate memory

    set -e 
    c++  -O -pipe -mcpu=ev4 -mtune=ev5 -mieee  -c -Wall -ftemplate-depth-100  -DNDEBUG -DNDEBUG -DBOOST_REGEX_DYN_LINK=1  -finline-functions -Wno-inline -fPIC   -I"bin/boost/libs/regex/build"  -I "/tmp/a/ports/devel/boost/work/boost_1_31_0"  -o "bin/boost/libs/regex/build/libboost_regex.so.1/gcc/release/shared-linkable-true/threading-multi/cregex.o"  "/tmp/a/ports/devel/boost/work/boost_1_31_0/libs/regex/build/../src/cregex.cpp" 
    

...failed gcc-C++-action bin/boost/libs/regex/build/libboost_regex.so.1/gcc/release/shared-linkable-true/threading-multi/cregex.o...
gcc-C++-action bin/boost/libs/regex/build/libboost_regex.so.1/gcc/release/shared-linkable-true/threading-multi/fileiter.o
gcc-C++-action bin/boost/libs/regex/build/libboost_regex.so.1/gcc/release/shared-linkable-true/threading-multi/posix_api.o

[...]

gcc-C++-action bin/boost/libs/regex/build/libboost_regex.a/gcc/release/threading-multi/cregex.o
virtual memory exhausted: Cannot allocate memory

    set -e 
    c++  -O -pipe -mcpu=ev4 -mtune=ev5 -mieee  -c -Wall -ftemplate-depth-100  -DNDEBUG -DNDEBUG  -finline-functions -Wno-inline   -I"bin/boost/libs/regex/build"  -I "/tmp/a/ports/devel/boost/work/boost_1_31_0"  -o "bin/boost/libs/regex/build/libboost_regex.a/gcc/release/threading-multi/cregex.o"  "/tmp/a/ports/devel/boost/work/boost_1_31_0/libs/regex/build/../src/cregex.cpp" 
    

...failed gcc-C++-action bin/boost/libs/regex/build/libboost_regex.a/gcc/release/threading-multi/cregex.o...
gcc-C++-action bin/boost/libs/regex/build/libboost_regex.a/gcc/release/threading-multi/fileiter.o

[...]
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