[Libguestfs] [PATCH] Fix code which looked for leaked FDs between each command.

[Jim Meyering]

Richard W.M. Jones wrote:
>  # Specification in the form of a few gnulib-tool.m4 macro invocations:
>  gl_LOCAL_DIR([])
>  gl_MODULES([
>    hash
> +  ignore-value
>    manywarnings
>    warnings
>  ])
> diff --git a/daemon/proto.c b/daemon/proto.c
> index c0e3927..c22bbee 100644
> --- a/daemon/proto.c
> +++ b/daemon/proto.c
> @@ -29,6 +29,8 @@
>  #include <rpc/types.h>
>  #include <rpc/xdr.h>
>
> +#include "ignore-value.h"
> +
>  #include "daemon.h"
>  #include "../src/guestfs_protocol.h"
>
> @@ -53,13 +55,11 @@ main_loop (int _sock)
>    sock = _sock;
>
>    for (;;) {
> -#if 0
>      /* Most common errors are leaked memory and leaked file descriptors,
>       * so run this between each command:
>       */
> -    if (verbose)
> -      system ("ls -l /proc/self/fd");
> -#endif
> +    if (verbose && 0)
> +      ignore_value (system ("ls -l /proc/self/fd"));

Ack.
I like the replacement of #if-0 with if (... && 0), too.