Question on warnings for compiling gcc from svn source

[NightStrike]

I am building a cross compiler, and I'm not good at it, so it requires
many tries with different options.  The outcome is that I spend a lot
of time looking at output from the various compiles I keep doing.  I
am curious.. there are a number of warnings for things that seem
trivial to fix... Does anyone go and fix these things?  For instance,
the file libiberty/argv.c has a variable "int ret" defined at line 313
that is never used, and this triggers a warning.  Sure enough, the
variable is never used (that I can see from the source).  Are things
like that monitored and cleaned up?