Rebase Always-use-the-equivalent-year-to-determine-the-time-zone patch
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@ -9,90 +9,92 @@ Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1479687
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Origin: upstream
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Applied-upstream: 62, commit:https://hg.mozilla.org/mozilla-central/rev/ce9f1466ec78
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---
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js/src/jsdate.cpp | 12 ++++++++----
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js/src/jsdate.cpp | 11 +++++++----
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js/src/vm/Time.cpp | 14 ++++----------
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js/src/vm/Time.h | 2 +-
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3 files changed, 13 insertions(+), 15 deletions(-)
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3 files changed, 12 insertions(+), 15 deletions(-)
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diff --git a/js/src/jsdate.cpp b/js/src/jsdate.cpp
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index b7f49e7..f32a853 100644
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index 07af3d18c865..ff8fd6c3763c 100644
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--- a/js/src/jsdate.cpp
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+++ b/js/src/jsdate.cpp
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@@ -2684,12 +2684,16 @@ static size_t
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FormatTime(char* buf, int buflen, const char* fmt, double utcTime, double localTime)
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{
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PRMJTime prtm = ToPRMJTime(localTime, utcTime);
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- int eqivalentYear = IsRepresentableAsTime32(utcTime)
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- ? prtm.tm_year
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- : EquivalentYearForDST(prtm.tm_year);
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+
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+ // If an equivalent year was used to compute the date/time components, use
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+ // the same equivalent year to determine the time zone name and offset in
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+ // PRMJ_FormatTime(...).
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+ int timeZoneYear = IsRepresentableAsTime32(utcTime)
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+ ? prtm.tm_year
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+ : EquivalentYearForDST(prtm.tm_year);
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int offsetInSeconds = (int) floor((localTime - utcTime) / msPerSecond);
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@@ -2353,12 +2353,15 @@ static PRMJTime ToPRMJTime(double localTime, double utcTime) {
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static size_t FormatTime(char* buf, int buflen, const char* fmt, double utcTime,
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double localTime) {
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PRMJTime prtm = ToPRMJTime(localTime, utcTime);
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- int eqivalentYear = IsRepresentableAsTime32(utcTime)
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- ? prtm.tm_year
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- : EquivalentYearForDST(prtm.tm_year);
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+ // If an equivalent year was used to compute the date/time components, use
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+ // the same equivalent year to determine the time zone name and offset in
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+ // PRMJ_FormatTime(...).
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+ int timeZoneYear = IsRepresentableAsTime32(utcTime)
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+ ? prtm.tm_year
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+ : EquivalentYearForDST(prtm.tm_year);
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int offsetInSeconds = (int)floor((localTime - utcTime) / msPerSecond);
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- return PRMJ_FormatTime(buf, buflen, fmt, &prtm, eqivalentYear, offsetInSeconds);
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+ return PRMJ_FormatTime(buf, buflen, fmt, &prtm, timeZoneYear, offsetInSeconds);
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- return PRMJ_FormatTime(buf, buflen, fmt, &prtm, eqivalentYear,
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+ return PRMJ_FormatTime(buf, buflen, fmt, &prtm, timeZoneYear,
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offsetInSeconds);
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}
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enum class FormatSpec {
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diff --git a/js/src/vm/Time.cpp b/js/src/vm/Time.cpp
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index da690fe..3a80d7f 100644
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index f59977f0d0e9..5ee4794b3e83 100644
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--- a/js/src/vm/Time.cpp
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+++ b/js/src/vm/Time.cpp
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@@ -262,7 +262,7 @@ PRMJ_InvalidParameterHandler(const wchar_t* expression,
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@@ -247,7 +247,7 @@ static void PRMJ_InvalidParameterHandler(const wchar_t* expression,
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/* Format a time value into a buffer. Same semantics as strftime() */
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size_t
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PRMJ_FormatTime(char* buf, int buflen, const char* fmt, const PRMJTime* prtm,
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- int equivalentYear, int offsetInSeconds)
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+ int timeZoneYear, int offsetInSeconds)
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{
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size_t result = 0;
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size_t PRMJ_FormatTime(char* buf, int buflen, const char* fmt,
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- const PRMJTime* prtm, int equivalentYear,
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+ const PRMJTime* prtm, int timeZoneYear,
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int offsetInSeconds) {
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size_t result = 0;
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#if defined(XP_UNIX) || defined(XP_WIN)
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@@ -295,7 +295,8 @@ PRMJ_FormatTime(char* buf, int buflen, const char* fmt, const PRMJTime* prtm,
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* Fill out |td| to the time represented by |prtm|, leaving the
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* timezone fields zeroed out. localtime_r will then fill in the
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* timezone fields for that local time according to the system's
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- * timezone parameters.
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+ * timezone parameters. Use |timeZoneYear| for the year to ensure the
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+ * time zone name matches the time zone offset used by the caller.
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*/
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struct tm td;
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memset(&td, 0, sizeof(td));
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@@ -305,19 +306,12 @@ PRMJ_FormatTime(char* buf, int buflen, const char* fmt, const PRMJTime* prtm,
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td.tm_mday = prtm->tm_mday;
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td.tm_mon = prtm->tm_mon;
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td.tm_wday = prtm->tm_wday;
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- td.tm_year = prtm->tm_year - 1900;
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+ td.tm_year = timeZoneYear - 1900;
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td.tm_yday = prtm->tm_yday;
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td.tm_isdst = prtm->tm_isdst;
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@@ -280,7 +280,8 @@ size_t PRMJ_FormatTime(char* buf, int buflen, const char* fmt,
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* Fill out |td| to the time represented by |prtm|, leaving the
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* timezone fields zeroed out. localtime_r will then fill in the
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* timezone fields for that local time according to the system's
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- * timezone parameters.
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+ * timezone parameters. Use |timeZoneYear| for the year to ensure the
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+ * time zone name matches the time zone offset used by the caller.
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*/
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struct tm td;
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memset(&td, 0, sizeof(td));
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@@ -290,19 +291,12 @@ size_t PRMJ_FormatTime(char* buf, int buflen, const char* fmt,
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td.tm_mday = prtm->tm_mday;
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td.tm_mon = prtm->tm_mon;
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td.tm_wday = prtm->tm_wday;
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- td.tm_year = prtm->tm_year - 1900;
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+ td.tm_year = timeZoneYear - 1900;
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td.tm_yday = prtm->tm_yday;
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td.tm_isdst = prtm->tm_isdst;
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time_t t = mktime(&td);
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time_t t = mktime(&td);
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- // If |prtm| cannot be represented in |time_t| the year is probably
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- // out of range, try again with the DST equivalent year.
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- if (t == static_cast<time_t>(-1)) {
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- td.tm_year = equivalentYear - 1900;
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- t = mktime(&td);
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- }
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- // If |prtm| cannot be represented in |time_t| the year is probably
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- // out of range, try again with the DST equivalent year.
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- if (t == static_cast<time_t>(-1)) {
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- td.tm_year = equivalentYear - 1900;
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- t = mktime(&td);
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- }
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-
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// If either mktime or localtime_r failed, fill in the fallback time
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// zone offset |offsetInSeconds| and set the time zone identifier to
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// the empty string.
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// If either mktime or localtime_r failed, fill in the fallback time
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// zone offset |offsetInSeconds| and set the time zone identifier to
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// the empty string.
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diff --git a/js/src/vm/Time.h b/js/src/vm/Time.h
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index db61e89..597673b 100644
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index 3a51d869c922..37b7faeec028 100644
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--- a/js/src/vm/Time.h
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+++ b/js/src/vm/Time.h
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@@ -55,7 +55,7 @@ PRMJ_NowShutdown() {}
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/* Format a time value into a buffer. Same semantics as strftime() */
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extern size_t
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PRMJ_FormatTime(char* buf, int buflen, const char* fmt, const PRMJTime* tm,
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- int equivalentYear, int offsetInSeconds);
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+ int timeZoneYear, int offsetInSeconds);
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@@ -49,7 +49,7 @@ inline void PRMJ_NowShutdown() {}
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/* Format a time value into a buffer. Same semantics as strftime() */
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extern size_t PRMJ_FormatTime(char* buf, int buflen, const char* fmt,
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- const PRMJTime* tm, int equivalentYear,
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+ const PRMJTime* tm, int timeZoneYear,
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int offsetInSeconds);
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/**
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--
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2.21.0
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