tree 70f5aedbca8a2bc5e0ff3f5f997b213a8dafb34d
parent 19f3a3d1077c6fcccbd527a5aced0e8c4c02f6ab
author Scott James Remnant <keybuk@google.com> 1655143707 -0700
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> 1655162785 +0000

pw_protobuf: Don't write empty fixed sized fields

Fixed sized fields are an implementation detail of pw_protobuf, and
should behave identically on-wire to those implemented with pw::Vector.
This means not encoding when they have a zero (default) value, for
compatibility with other protobuf implementations.

Confirmation that this is correct behavior is that after this, tests
for certain fields no longer need to include expected zero values
of random other fields.

Change-Id: I7f69d0fd1385c80000bbd28dc992123517e171d3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/97901
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
Pigweed-Auto-Submit: Scott James Remnant <keybuk@google.com>
Reviewed-by: Armando Montanez <amontanez@google.com>