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Diffstat (limited to 'time/tzfile.c')
-rw-r--r--time/tzfile.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/time/tzfile.c b/time/tzfile.c
index e723892405..a7407316f3 100644
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -311,16 +311,25 @@ __tzfile_read (const char *file)
rule_stdoff = rule_dstoff = types[0].offset;
else
{
+ int stdoff_set = 0, dstoff_set = 0;
rule_stdoff = rule_dstoff = 0;
for (i = 0; i < num_transitions; ++i)
{
- if (!rule_stdoff && !types[type_idxs[i]].isdst)
- rule_stdoff = types[type_idxs[i]].offset;
- if (!rule_dstoff && types[type_idxs[i]].isdst)
- rule_dstoff = types[type_idxs[i]].offset;
- if (rule_stdoff && rule_dstoff)
+ if (!stdoff_set && !types[type_idxs[i]].isdst)
+ {
+ stdoff_set = 1;
+ rule_stdoff = types[type_idxs[i]].offset;
+ }
+ if (!dstoff_set && types[type_idxs[i]].isdst)
+ {
+ dstoff_set = 1;
+ rule_dstoff = types[type_idxs[i]].offset;
+ }
+ if (stdoff_set && dstoff_set)
break;
}
+ if (!dstoff_set)
+ rule_dstoff = rule_stdoff;
}
__daylight = rule_stdoff != rule_dstoff;