The issue looks to be the TZDIR (Time zoneinfo directory) has changed between 10.12 and 10.13
On 10.12 (Sierra), /usr/include/tzfile.h defines: $ grep TZDIR /usr/include/tzfile.h #ifndef TZDIR #define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */ #endif /* !defined TZDIR */ But when compiling with the beta its defined as: $ grep TZDIR /Applications/Xcode-beta.app//Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/tzfile.h #ifndef TZDIR #define TZDIR "/var/db/timezone/zoneinfo" /* Time zone object file directory */ #endif /* !defined TZDIR */ Which fails to since its pointing in the wrong place. A quick workaround is to just hardcode the TZDIR in CoreFoundation//NumberDate.subproj/CFTimeZone.c. A better workaround is maybe find out which os version the test is running on and set it dynamically. > On 20 Jun 2017, at 04:23, Zhu Shengqi via swift-corelibs-dev > <swift-corelibs-dev@swift.org> wrote: > > Hi guys, I want to contribute to swift-corelibs-foundation, but I met some > problems when testing my code. I got some fatalErrors ( e.g. in > test_gettingDatesOnGregorianCalendar(), TimeZone(identifier: "UTC") returns a > nil before being unwrapped). Do you have the same problems? > > I'm using Xcode 9 beta and have tried both > swift-DEVELOPMENT-SNAPSHOT-2017-06-19-a-osx and > swift-4.0-DEVELOPMENT-SNAPSHOT-2017-06-12-a-osx (which swift snapshot should > I use btw?). > > _______________________________________________ > swift-corelibs-dev mailing list > swift-corelibs-dev@swift.org > https://lists.swift.org/mailman/listinfo/swift-corelibs-dev _______________________________________________ swift-corelibs-dev mailing list swift-corelibs-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-corelibs-dev
