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Building `stdlib/public/Backtracing/Backtrace.swift` fails
Description
Command:
utils/build-script --skip-build-benchmarks --skip-ios --skip-watchos --skip-tvos --swift-darwin-supported-archs="$(uname -m)" --release-debuginfo --sccache --swift-disable-dead-stripping --skip-early-swift-driver --bootstrapping=off
Error:
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:479:21: error: expected a macro identifier for a pound literal expression
let mapRegex = #/
^
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:479:21: error: consecutive statements on a line must be separated by ';'
let mapRegex = #/
^
;
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:479:21: error: operator with postfix spacing cannot start a subexpression
let mapRegex = #/
^
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:480:49: error: consecutive statements on a line must be separated by ';'
^(?<start>[A-Fa-f0-9]+)-(?<end>[A-Fa-f0-9]+)\s+
^
;
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:481:22: error: expected ',' separator
(?<perms>[-rwxsp]{4})\s+
^
,
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:481:26: error: consecutive statements on a line must be separated by ';'
(?<perms>[-rwxsp]{4})\s+
^
;
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:482:28: error: consecutive statements on a line must be separated by ';'
(?<offset>[A-Fa-f0-9]+)\s+
^
;
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:483:27: error: consecutive statements on a line must be separated by ';'
(?<major>[A-Fa-f0-9]+):(?<minor>[A-Fa-f0-9]+)\s+
^
;
/Users/mac/Desktop/swift-project/swift/stdlib/public/Backtracing/Backtrace.swift:483:27: error: expected expression
(?<major>[A-Fa-f0-9]+):(?<minor>[A-Fa-f0-9]+)\s+
^
Environment
- Swift version 5.9-dev (LLVM d638e0929fa87b0, Swift 23e2f345b51ca0c)
It seems like --bootstrapping=off is no longer a valid option (or it should cause building of the Backtracing module to be skipped if possible).
@al45tair is working on a fix for this. The Backtracing module doesn't technically need to use a regex here.
That's in #66449, FWIW. I hadn't appreciated when I wrote that code that it would cause this problem, but it's easy to fix.
