We've filed this RT ticket: http://rt.perl.org/rt3//Public/Bug/Display.html?id=80782 When we build (a) with Sun Studio, (b) 64-bit, and (c) supply a vendorprefix (or multiple paths in APPLLIB), we get segfaults during testing of EUMM, Module::Build, and Test::Harness. This build broke between 5.10.0 and 5.11.0, and is still broken in 5.12.2 I have been performing builds with this ./Configure, primarily: ./Configure -Dcc=cc -Dprefix=/opt/perl -Dvendorprefix=/opt/perl -Aldflags='-m64' -Accflags='-m64' -Dusedevel -de The offending commit appears to be bdaf8c65d37b1e4fb9dee9eed906961f41184db9 -- something about TAP::Harness just blows up on a 64-bit suncc compiled Perl. I'll continue to look into this, as right now this is blocking $Work from upgrading, but this also seems like it is a blocker for 64-bit builds on Solaris using Sun CC. I would welcome any advice on building this without error, and can provide a shell account on a suitable box for testing, if that can help. -- rjbsThread Next