Bug 25032 - TimeZoneInfo does not work outside Cygwin on Windows
Summary: TimeZoneInfo does not work outside Cygwin on Windows
Alias: None
Product: Installers
Classification: Mono
Component: General ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2014-12-03 06:58 UTC by Jo Shields
Modified: 2014-12-03 07:20 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Jo Shields 2014-12-03 06:58:29 UTC
mcs/class/System.Core/System/TimeZoneInfo.cs uses a LIBC define in several places to build different code paths depending on platform. Where LIBC is set, a UNIX codepath is used - otherwise the Windows code path is used.

LIBC is actually *always* defined. e.g. it's in mcs/class/corlib/corlib-net_4_0.csproj and mcs/class/corlib/Makefile

As a result, the Windows code path is never built. The UNIX code path works in Cygwin (where time zone info is on disk e.g. in /etc/timezone) but not in PowerShell or cmd.exe

Should this even be a build-time thing? And if it's build-time, there needs to be a way to build the Windows code path on Windows.
Comment 1 Jo Shields 2014-12-03 07:20:50 UTC
Fixed in https://github.com/mono/mono/pull/1410