tree 200837fbeaeafd27e3492cce0d129fe8fecd459c
parent 9c1004563fd308eb7fdbc4c206c0404aaf56d038
author Joe Tsai <joetsai@digital-static.net> 1557263425 -0700
committer Joe Tsai <thebrokentoaster@gmail.com> 1557265142 +0000

internal/encoding/wire: increase maximum field number

The protobuf documentation explicitly specifies (1<<29)-1 as the maximum
field number, but the C++ implementation itself has a special-case where it
allows field numbers up to MaxInt32 for MessageSet fields, but continues
to apply the former limit in all non-MessageSet cases.

To avoid complicated branching logic, we use the larger limit for all cases
if MessageSet is supported, otherwise, we impose the documented limit.

Change-Id: I710a2a21aa3beba161c3e6ca2f2ed9a266920a5a
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/175817
Reviewed-by: Damien Neil <dneil@google.com>