[asterisk-users] Warnings during a compile

[Mark Michelson]

Robert Boardman wrote:
> Here is just one example of a warning when compiling asterisk on Ubuntu 8.10
> 
> manager.c:1760: warning: ignoring return value of âreadâ, declared with 
> attribute warn_unused_result
> 
> is this anything to worry about?
> 
> can i safely ignore it?
> 
> Thanks
> Robb
> 

I may be wrong about this part, but that class of warning is something that 
started appearing with a recent version of gcc (4.3 I think). Kevin Fleming took 
the time to clear up these warnings shortly after the release of this version of 
gcc, so if you are using a current checkout of Asterisk, you shouldn't see those 
warnings. In fact, looking at manager.c in my 1.4 and 1.6.0 checkouts, all calls 
to read(2) have their return value checked.

To answer your question more directly, it's something that has a low potential 
to create problems, but given how long Asterisk had gone without checking those 
return values and how recently that was fixed, it's probably something you can 
ignore. Of course updating to a more recent checkout of Asterisk will clear such 
warnings up.

Mark Michelson