New submission from Jose Fonseca :
MSVCRT's implementation of _spawnve, _spawnvpe, or any version that
takes an environ as paramater is not thread-safe, because it stores a
temporary environment string into a global variable.
_spawnve, _spawnvpe, and friends call a function named _cenvarg
Jose Fonseca added the comment:
Perhaps. I'm not a scons developer -- just an user -- and I don't know
what versions of python far back in time they want support, but it
appears it would make sense to use subprocess where available indeed. I
already I've filled an issue wit
