[libvirt] [PATCH] bridge: Fix uninitialized variable

[Jiri Denemark]

> > I always build with --enable-compile-warnings=error so any compiler warning
> > results in build failure. No special options beyond that.
> 
> Right. I do that too, and never saw an error. Your compiler must be 
> warning on more things than mine. Here's my build commandline (copied 
> from Jim nearly 2 years ago, and pretty much unchanged since):
> 
> ./autogen.sh --with-qemu-user=qemu --with-qemu-group=qemu 
> --enable-compile-warnings=error --prefix=/usr --libdir=/usr/lib64 
> --disable-nls CFLAGS="-g -Wformat -Wformat-security -Winit-self -Wall 
> -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Winline 
> -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -Dlint"

My command line is just

autogen.sh --system --enable-compile-warnings=error --enable-debug=yes

or if I need to debug something more seriously, I use

autogen.sh --system --enable-compile-warnings=error --enable-debug=yes
CFLAGS=-g

to get rid of the default -O2.

I noticed you don't have -O2 in your CFLAGS, which might be the issue here.
While -g is much better than -g -O2 when you actually start debugging, gcc
does not issue some warnings when it compiles without optimizations :-(

Jirka