I will post as an issue if the discussion fails to shed more light on this

In syntax proto2, I mark each element as optional. In proto3, all elements 
are considered optional by default. The error seems to be from proto3 
improperly checking for element existence. 


On Monday, March 7, 2016 at 3:41:49 PM UTC-7, Feng Xiao wrote:
>
> Hi Seth,
>
> Could you help submit this as a github issue? 
> https://github.com/google/protobuf/issues
>
> Do you know how we can modify the generated code to avoid this 
> "float-equal" warning? If you know of a solution, feel free to send us a 
> patch to fix the code:
>
> https://github.com/google/protobuf/blob/master/src/google/protobuf/compiler/cpp/cpp_message.cc#L314
>
> On Fri, Mar 4, 2016 at 4:42 PM, Seth Humphries <set...@gmail.com 
> <javascript:>> wrote:
>
>> I forgot to add that this occurs after proto buffer generates the pb.h 
>> and pb.c files. This error occurs inside the generated files when I attempt 
>> to compile them.  ie the error gives the .pb.c file and line number. 
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