Merge pull request #45 from max99x/master

Fixed time.h timezone bug

src/library.js

@@ -1792,7 +1792,7 @@ var Library = {
     var offset = {{{ makeGetValue('_timezone', 0, 'i32') }}};
     var daylight = {{{ makeGetValue('_daylight', 0, 'i32') }}};
     daylight = (daylight == 1) ? 60 * 60 : 0;
-    var ret = _mktime(tmPtr) - (offset + daylight);
+    var ret = _mktime(tmPtr) + offset - daylight;
     return ret;
   },
 
@@ -1817,7 +1817,7 @@ var Library = {
     var start = new Date(date.getFullYear(), 0, 1);
     var yday = Math.floor((date.getTime() - start.getTime()) / (1000 * 60 * 60 * 24));
     {{{ makeSetValue('tmPtr', '___tm_struct_layout.tm_yday', 'yday', 'i32') }}}
-    {{{ makeSetValue('tmPtr', '___tm_struct_layout.tm_gmtoff', '-start.getTimezoneOffset() * 60', 'i32') }}}
+    {{{ makeSetValue('tmPtr', '___tm_struct_layout.tm_gmtoff', 'start.getTimezoneOffset() * 60', 'i32') }}}
 
     var dst = Number(start.getTimezoneOffset() != date.getTimezoneOffset());
     {{{ makeSetValue('tmPtr', '___tm_struct_layout.tm_isdst', 'dst', 'i32') }}}
@@ -1876,7 +1876,7 @@ var Library = {
     if (_tzname !== null) return;
 
     _timezone = _malloc(QUANTUM_SIZE);
-    {{{ makeSetValue('_timezone', '0', '(new Date()).getTimezoneOffset() * 60', 'i32') }}}
+    {{{ makeSetValue('_timezone', '0', '-(new Date()).getTimezoneOffset() * 60', 'i32') }}}
 
     _daylight = _malloc(QUANTUM_SIZE);
     var winter = new Date(2000, 0, 1);

tests/time/output.txt

@@ -20,9 +20,8 @@ localtime timezone: 1
 localtime daylight: 1
 localtime tzname: 1
 localtime <-> mktime: 1
-old year: 102
-new year: 70
-old year again: 102
+localtime_r(1): 1
+localtime_r(2): 1
 time: 1
 difftime+: 268848637.000000
 difftime-: -268848637.000000
@@ -30,9 +29,9 @@ difftime-: -268848637.000000
 2000 days: 366
 2001 days: 365
 2004 days: 366
-asctime: Wed Dec 25 05:22:43 2002
-old asctime: Wed Dec 25 05:22:43 2002
-new asctime_r: Sat Jul  2 22:33:20 2011
-old asctime again: Wed Dec 25 05:22:43 2002
+asctime: Wed Dec 25 03:22:43 2002
+old asctime: Wed Dec 25 03:22:43 2002
+new asctime_r: Sat Jul  2 19:33:20 2011
+old asctime again: Wed Dec 25 03:22:43 2002
 clock: 0
 ctime: 0

tests/time/src.c

@@ -44,8 +44,8 @@ int main() {
   // Verify localtime() picks up timezone data.
   time_t t2 = xmas2002 - 60 * 60 * 24 * 30 * 6;
   tm_ptr = localtime(&t2);
-  printf("localtime timezone: %d\n", (timezone + tm_ptr->tm_isdst * 60 * 60 ==
-                                      -tm_ptr->tm_gmtoff));
+  time_t dst_diff = (tm_ptr->tm_isdst == 1) ? tm_ptr->tm_isdst * 60 * 60 : 0;
+  printf("localtime timezone: %d\n", (timezone + tm_ptr->tm_gmtoff == dst_diff));
   printf("localtime daylight: %d\n", daylight == tm_ptr->tm_isdst);
   printf("localtime tzname: %d\n", (!strcmp(tzname[0], tm_ptr->tm_zone) ||
                                     !strcmp(tzname[1], tm_ptr->tm_zone)));
@@ -57,10 +57,9 @@ int main() {
   time_t t3 = 0;
   struct tm tm2;
   localtime_r(&t3, &tm2);
-  printf("old year: %d\n", tm_ptr->tm_year);
-  printf("new year: %d\n", tm2.tm_year);
+  printf("localtime_r(1): %d\n", tm2.tm_year != tm_ptr->tm_year);
   localtime(&xmas2002);
-  printf("old year again: %d\n", tm_ptr->tm_year);
+  printf("localtime_r(2): %d\n", tm2.tm_year != tm_ptr->tm_year);
 
   // Verify time() returns reasonable value (between 2011 and 2030).
   time_t t4 = 0;
@@ -79,14 +78,14 @@ int main() {
   printf("2004 days: %d\n", dysize(2004));
 
   // Verify asctime() formatting().
-  printf("asctime: %s", asctime(localtime(&xmas2002)));
+  printf("asctime: %s", asctime(gmtime(&xmas2002)));
 
   // Verify asctime_r() doesn't clobber static data.
   time_t t6 = 1309635200ll;
-  tm_ptr = localtime(&xmas2002);
+  tm_ptr = gmtime(&xmas2002);
   char* formatted = asctime(tm_ptr);
   char buffer[32];
-  asctime_r(localtime(&t6), buffer);
+  asctime_r(gmtime(&t6), buffer);
   printf("old asctime: %s", formatted);
   printf("new asctime_r: %s", buffer);
   asctime_r(tm_ptr, buffer);