Use functions from `crt_externs.h` on iOS/tvOS/watchOS/visionOS#125225

Merged

bors merged 4 commits intorust-lang:masterfrom madsmtm:ios-crt_externs.h

May 21, 2024

+127-150

Commits on May 17, 2024

Commits on May 19, 2024

Add NULL check in argument parsing on Apple platforms
madsmtm
committed

Commits on May 20, 2024

Make NULL check in argument parsing the same on all unix platforms
madsmtm
committed