mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
22 lines
853 B
Swift
22 lines
853 B
Swift
// This is just an example and documentation of how -parse-stdlib implicitly imports the Builtin module.
|
|
// Note that a lot of builtins expect some types to be defined in the stdlib, otherwise the builtin will be unavailable.
|
|
// Therefore "-module-name Swift" is significant (otherwise the types won't be find in the module we're building).
|
|
//
|
|
// Example:
|
|
// %target-swift-emit-ir -parse-stdlib %s
|
|
// Builtin.unreachable() // <<< error: module 'Builtin' has no member named 'unreachable'
|
|
//
|
|
// The real problem is that the 'unreachable' builtin needs the Never type (that's its return type).
|
|
//
|
|
// Example:
|
|
// %target-swift-emit-ir -parse-stdlib -module-name Swift %s
|
|
// enum Never {}
|
|
// Builtin.unreachable() // works
|
|
|
|
// RUN: %target-swift-emit-ir -parse-stdlib -module-name Swift %s
|
|
|
|
enum Never {}
|
|
|
|
Builtin.unreachable()
|
|
Builtin.int_trap()
|