[GitHub] [arrow] thisisnic commented on a diff in pull request #35634: GH-35633: [C++] R builds failing with error 'Invalid: Timestamps already have a timezone: 'UTC'. Cannot localize to 'UTC''

["thisisnic (via GitHub)" <gi...@apache.org>]

thisisnic commented on code in PR #35634:
URL: https://github.com/apache/arrow/pull/35634#discussion_r1196716639


##########
cpp/src/arrow/compute/kernels/scalar_temporal_unary.cc:
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@@ -120,7 +120,7 @@ struct AssumeTimezoneExtractor
   static Status Exec(KernelContext* ctx, const ExecSpan& batch, ExecResult* out) {
     const AssumeTimezoneOptions& options = AssumeTimezoneState::Get(ctx);
     const auto& timezone = GetInputTimezone(*batch[0].type());
-    if (!timezone.empty()) {
+    if (!timezone.empty() && timezone != options.timezone) {

Review Comment:
   Fair



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