diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | library/clock.tcl | 27 | ||||
| -rw-r--r-- | tests/clock.test | 33 |
3 files changed, 56 insertions, 11 deletions
@@ -1,3 +1,10 @@ +2011-10-18 Reinhard Max <max@suse.de> + + * library/clock.tcl (::tcl::clock::GetSystemTimeZone): Cache the + time zone only if it was detected by one of the expensive + methods. Otherwise after unsetting TCL_TZ or TZ the previous value + will still be used. + 2011-10-15 Venkat Iyer <venkat@comit.com> * library/tzdata/America/Sitka : Update to Olson's tzdata2011l * library/tzdata/Pacific/Fiji diff --git a/library/clock.tcl b/library/clock.tcl index 8bce49f..2e9cae7 100644 --- a/library/clock.tcl +++ b/library/clock.tcl @@ -3076,18 +3076,23 @@ proc ::tcl::clock::GetSystemTimeZone {} { set timezone $result } elseif {[set result [getenv TZ]] ne {}} { set timezone $result - } elseif { [info exists CachedSystemTimeZone] } { - set timezone $CachedSystemTimeZone - } elseif { $::tcl_platform(platform) eq {windows} } { - set timezone [GuessWindowsTimeZone] - } elseif { [file exists /etc/localtime] - && ![catch {ReadZoneinfoFile \ - Tcl/Localtime /etc/localtime}] } { - set timezone :Tcl/Localtime - } else { - set timezone :localtime } - set CachedSystemTimeZone $timezone + if {![info exists timezone]} { + # Cache the time zone only if it was detected by one of the + # expensive methods. + if { [info exists CachedSystemTimeZone] } { + set timezone $CachedSystemTimeZone + } elseif { $::tcl_platform(platform) eq {windows} } { + set timezone [GuessWindowsTimeZone] + } elseif { [file exists /etc/localtime] + && ![catch {ReadZoneinfoFile \ + Tcl/Localtime /etc/localtime}] } { + set timezone :Tcl/Localtime + } else { + set timezone :localtime + } + set CachedSystemTimeZone $timezone + } if { ![dict exists $TimeZoneBad $timezone] } { dict set TimeZoneBad $timezone [catch {SetupTimeZone $timezone}] } diff --git a/tests/clock.test b/tests/clock.test index 7937933..917543a 100644 --- a/tests/clock.test +++ b/tests/clock.test @@ -35895,6 +35895,39 @@ test clock-38.1 {regression - convertUTCToLocalViaC - east of Greenwich} \ } \ -result {01:00:00} +test clock-38.2 {make sure TZ is not cached after unset} \ + -setup { + if { [info exists env(TZ)] } { + set oldTZ $env(TZ) + unset env(TZ) + } + if { [info exists env(TCL_TZ)] } { + set oldTCLTZ $env(TCL_TZ) + unset env(TCL_TZ) + } + } \ + -body { + set t1 [clock format 0] + # a time zone that is unlikely to anywhere + set env(TZ) "+04:20" + set t2 [clock format 0] + unset env(TZ) + set t3 [clock format 0] + expr {$t1 eq $t3 && $t1 ne $t2} + } \ + -cleanup { + if { [info exists oldTZ] } { + set env(TZ) $oldTZ + unset oldTZ + } + if { [info exists oldTclTZ] } { + set env(TCL_TZ) $oldTclTZ + unset oldTclTZ + } + } \ + -result 1 + + test clock-39.1 {regression - synonym timezones} { clock format 0 -format {%H:%M:%S} -timezone :US/Eastern } {19:00:00} |