Hi, We're currently using gcc-4.4. On IRIX 6.5, we get crashes if -lpthread is ordered before -lstdc++ (warnings about "not used for resolving any symbol" removed below): % echo 'int main() {}' >a.cpp % g++ a.cpp -lpthread; ./a.out; echo $? zsh: segmentation fault (core dumped) ./a.out 139 % g++ a.cpp -pthread; ./a.out; echo $? 0 % g++ a.cpp -lstdc++ -lpthread; ./a.out; echo $? 0 With gcc-4.2.x we had a similar issue, but on Tru64, that seems to be fixed in 4.4.5. We have not tried trunk yet, is the problem already fixed there? We're looking at reordering -lpthread to come after -lstdc++ by patching cp/g++spec.c to fix this, but perhaps that is the wrong approach? Thanks for any help, Peter -- Peter O'Gorman pogma@xxxxxxxxxxxxxxxxxx