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From: Tom Tromey <tom@tromey.com>
To: Simon Marchi <simon.marchi@polymtl.ca>
Cc: asmwarrior <asmwarrior@gmail.com>,  GDB Development <gdb@sourceware.org>
Subject: Re: gcc warning with "some variable may be used uninitialized in this function [-Wmaybe-uninitialized]" when building under msys
Date: Thu, 04 Oct 2018 12:41:00 -0000	[thread overview]
Message-ID: <87woqxj34a.fsf@tromey.com> (raw)
In-Reply-To: <9aa0ec3d6356d1e0c746697161918576@polymtl.ca> (Simon Marchi's	message of "Thu, 04 Oct 2018 08:00:54 -0400")

>>>>> "Simon" == Simon Marchi <simon.marchi@polymtl.ca> writes:

Simon> I also see this from time to time.  I think it is a false positive,
Simon> but I may be wrong.  Do you see a code path that could actually be
Simon> problematic?

I think this is just that gcc doesn't know how to deal with
gdb::optional, and we aren't willing to add an initializer that would
slow down the generated code.  IIUC this is a problem with std::optional
as well.

Tom


      parent reply	other threads:[~2018-10-04 12:41 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-04  6:28 asmwarrior
2018-10-04 12:01 ` Simon Marchi
2018-10-04 12:40   ` Pedro Alves
2018-10-05  5:08     ` Tom Tromey
2018-10-09 10:34       ` Pedro Alves
2018-10-09 19:34         ` Tom Tromey
2018-10-09 19:54           ` Pedro Alves
2018-10-09 20:01             ` Pedro Alves
2018-10-09 20:04             ` Tom Tromey
2018-10-04 12:41   ` Tom Tromey [this message]

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