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Re: [PATCH] Fix maybe-used-uninitialised warning.
- From: Christopher Faylor <cgf-use-the-mailinglist-please at cygwin dot com>
- To: cygwin-patches at cygwin dot com
- Date: Sat, 9 Jan 2010 11:40:23 -0500
- Subject: Re: [PATCH] Fix maybe-used-uninitialised warning.
- References: <4B4868F7.1000100@gmail.com>
- Reply-to: cygwin-patches at cygwin dot com
On Sat, Jan 09, 2010 at 11:31:03AM +0000, Dave Korn wrote:
>
> Hi,
>
> Here are two small fixes shown up by more sensitive warnings in gcc-4.5.0.
>In hookapi.cc, it notices that the loop might not run even once; in
>fhandler_tty, it appears to miss that the loops can never exit. That probably
>needs fixing upstream (but it may be some odd artifact of C++ language rules,
>since it only happens there, not in plain C; something to do with exceptional
>exits, maybe), but until then it seemed harmless to add a trivial return zero;
>it'll only add a handful of bytes to the dll. (I tested attribute noreturn
>and it didn't help.)
>
>winsup/cygwin/ChangeLog:
>
> * hookapi.cc (hook_or_detect_cygwin): Initialise i earlier to avoid
> warning.
>
> OK?
I'd prefer i be initialized to zero.
>winsup/cygwin/ChangeLog:
>
> * fhandler_tty.cc (process_input): Add redundant final return to
> silence (bogus?) warning.
These are ok. As usual, I hate that we have to make these pointless
accommodations. But I've been hating that for many years so it's
nothing newo.
cgf