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Fix assorted breakage in to_char()'s OF format option. 

In HEAD, fix incorrect field width for hours part of OF when tm_gmtoff is
negative.  This was introduced by commit 2d87eedc1d as a result of
falsely applying a pattern that's correct when + signs are omitted, which
is not the case for OF.

In 9.4, fix missing abs() call that allowed a sign to be attached to the
minutes part of OF.  This was fixed in 9.5 by 9b43d73b3f, but for
inscrutable reasons not back-patched.

In all three versions, ensure that the sign of tm_gmtoff is correctly
reported even when the GMT offset is less than 1 hour.

Add regression tests, which evidently we desperately need here.

Thomas Munro and Tom Lane, per report from David Fetter
This commit is contained in:
Tom Lane 2016-03-17 15:50:33 -04:00
parent f4ceed6ceb
commit 55c3a04d60
3 changed files with 75 additions and 4 deletions
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11
src/backend/utils/adt/formatting.c
View File

@ -2506,12 +2506,15 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out, Oid col
break;
case DCH_OF:
INVALID_FOR_INTERVAL;
sprintf(s, "%+0*d", S_FM(n->suffix) ? 0 : (tm->tm_gmtoff >= 0) ? 3 : 4,
(int) tm->tm_gmtoff / SECS_PER_HOUR);
sprintf(s, "%c%0*d",
(tm->tm_gmtoff >= 0) ? '+' : '-',
S_FM(n->suffix) ? 0 : 2,
abs((int) tm->tm_gmtoff) / SECS_PER_HOUR);
s += strlen(s);
if ((int) tm->tm_gmtoff % SECS_PER_HOUR != 0)
if (abs((int) tm->tm_gmtoff) % SECS_PER_HOUR != 0)
{
sprintf(s, ":%02d", abs((int) tm->tm_gmtoff % SECS_PER_HOUR) / SECS_PER_MINUTE);
sprintf(s, ":%02d",
(abs((int) tm->tm_gmtoff) % SECS_PER_HOUR) / SECS_PER_MINUTE);
s += strlen(s);
}
break;

51
src/test/regress/expected/timestamptz.out
View File

@ -1699,6 +1699,57 @@ SELECT '' AS to_char_11, to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
| 2001 1 1 1 1 1 1
(66 rows)
-- Check OF with various zone offsets, particularly fractional hours
SET timezone = '00:00';
SELECT to_char(now(), 'OF');
to_char
---------
+00
(1 row)
SET timezone = '+02:00';
SELECT to_char(now(), 'OF');
to_char
---------
-02
(1 row)
SET timezone = '-13:00';
SELECT to_char(now(), 'OF');
to_char
---------
+13
(1 row)
SET timezone = '-00:30';
SELECT to_char(now(), 'OF');
to_char
---------
+00:30
(1 row)
SET timezone = '00:30';
SELECT to_char(now(), 'OF');
to_char
---------
-00:30
(1 row)
SET timezone = '-04:30';
SELECT to_char(now(), 'OF');
to_char
---------
+04:30
(1 row)
SET timezone = '04:30';
SELECT to_char(now(), 'OF');
to_char
---------
-04:30
(1 row)
RESET timezone;
CREATE TABLE TIMESTAMPTZ_TST (a int , b timestamptz);
-- Test year field value with len > 4
INSERT INTO TIMESTAMPTZ_TST VALUES(1, 'Sat Mar 12 23:58:48 1000 IST');

17
src/test/regress/sql/timestamptz.sql
View File

@ -248,6 +248,23 @@ SELECT '' AS to_char_10, to_char(d1, 'IYYY IYY IY I IW IDDD ID')
SELECT '' AS to_char_11, to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
FROM TIMESTAMPTZ_TBL;
-- Check OF with various zone offsets, particularly fractional hours
SET timezone = '00:00';
SELECT to_char(now(), 'OF');
SET timezone = '+02:00';
SELECT to_char(now(), 'OF');
SET timezone = '-13:00';
SELECT to_char(now(), 'OF');
SET timezone = '-00:30';
SELECT to_char(now(), 'OF');
SET timezone = '00:30';
SELECT to_char(now(), 'OF');
SET timezone = '-04:30';
SELECT to_char(now(), 'OF');
SET timezone = '04:30';
SELECT to_char(now(), 'OF');
RESET timezone;
CREATE TABLE TIMESTAMPTZ_TST (a int , b timestamptz);
-- Test year field value with len > 4