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-rw-r--r--absl/time/internal/cctz/src/time_zone_lookup.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/absl/time/internal/cctz/src/time_zone_lookup.cc b/absl/time/internal/cctz/src/time_zone_lookup.cc
index fbd86e16b485..d549d862a769 100644
--- a/absl/time/internal/cctz/src/time_zone_lookup.cc
+++ b/absl/time/internal/cctz/src/time_zone_lookup.cc
@@ -134,6 +134,9 @@ time_zone local_time_zone() {
 
   time_zone tz;
   load_time_zone(name, &tz);  // Falls back to UTC.
+  // TODO: Follow the RFC3339 "Unknown Local Offset Convention" and
+  // arrange for %z to generate "-0000" when we don't know the local
+  // offset because the load_time_zone() failed and we're using UTC.
   return tz;
 }