c5f72c8f - Pack env vars into a struct and initialize them all at once, rather than lazily populating the _isSet flags on access. In most cases this should go from O(n) writes to 0, since none of them will be set (#89651)
Pack env vars into a struct and initialize them all at once, rather than lazily populating the _isSet flags on access. In most cases this should go from O(n) writes to 0, since none of them will be set (#89651)
Fixes rdar://178564603