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From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 4/4] transport: drop "int cmp = cmp" hack
Date: Mon, 25 Mar 2013 14:55:16 -0700	[thread overview]
Message-ID: <7vk3ovw3ej.fsf@alter.siamese.dyndns.org> (raw)
In-Reply-To: <20130325210625.GA16386@sigill.intra.peff.net> (Jeff King's message of "Mon, 25 Mar 2013 17:06:25 -0400")

Jeff King <peff@peff.net> writes:

> I wonder, though, what made you look at this. It did not come up in my
> list of -Wuninitialized warnings. Did it get triggered by one of the
> other gcc versions?

No, but the function in question has that questionable construct
written by somebody who does not understand linked list, and it
dusgusted me enough to look at where that list came from, which
inevitably made me notice that "return dummy.next" that made me go
"wat?"

>
>> diff --git a/transport.c b/transport.c
>> index 87b8f14..e6f9346 100644
>> --- a/transport.c
>> +++ b/transport.c
>> @@ -106,7 +106,8 @@ static void insert_packed_refs(const char *packed_refs, struct ref **list)
>>  		return;
>>  
>>  	for (;;) {
>> -		int cmp, len;
>> +		int cmp = 0; /* assigned before used */
>> +		int len;
>>  
>>  		if (!fgets(buffer, sizeof(buffer), f)) {
>>  			fclose(f);
>
> I think that's fine.
>
> -Peff

  reply	other threads:[~2013-03-25 21:55 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-21 11:03 [PATCH 0/4] drop some "int x = x" hacks to silence gcc warnings Jeff King
2013-03-21 11:05 ` [PATCH 1/4] wt-status: fix possible use of uninitialized variable Jeff King
2013-03-21 19:49   ` Jonathan Nieder
2013-03-21 19:55     ` Junio C Hamano
2013-03-21 19:58       ` Jonathan Nieder
2013-03-22 16:15     ` Jeff King
2013-03-21 11:08 ` [PATCH 2/4] fast-import: use pointer-to-pointer to keep list tail Jeff King
2013-03-21 20:43   ` Jonathan Nieder
2013-03-21 11:10 ` [PATCH 3/4] drop some obsolete "x = x" compiler warning hacks Jeff King
2013-03-21 15:16   ` Erik Faye-Lund
2013-03-21 20:47   ` Jonathan Nieder
2013-03-24  7:17     ` Torsten Bögershausen
2013-03-21 11:13 ` [PATCH 4/4] transport: drop "int cmp = cmp" hack Jeff King
2013-03-21 20:59   ` Jonathan Nieder
2013-03-24  4:00   ` Junio C Hamano
2013-03-24  9:32     ` Jeff King
2013-03-24 14:54       ` Torsten Bögershausen
2013-03-25 19:50       ` Junio C Hamano
2013-03-25 21:06         ` Jeff King
2013-03-25 21:55           ` Junio C Hamano [this message]
2013-03-21 11:45 ` [PATCH 0/4] drop some "int x = x" hacks to silence gcc warnings Johannes Sixt
2013-03-21 11:55   ` Jeff King
2013-03-21 14:58     ` Junio C Hamano
2013-03-21 15:19       ` Junio C Hamano
2013-03-21 15:44         ` Jeff King
2013-03-21 15:44           ` [PATCH 5/4] fast-import: clarify "inline" logic in file_change_m Jeff King
2013-03-21 15:45           ` [PATCH 6/4] run-command: always set failed_errno in start_command Jeff King
2013-03-21 21:02           ` [PATCH 0/4] drop some "int x = x" hacks to silence gcc warnings Jonathan Nieder
2013-03-22 16:18           ` Jeff King
2013-03-22 16:19             ` [PATCH 7/4] submodule: clarify logic in show_submodule_summary Jeff King
2013-03-22 21:10               ` Junio C Hamano
2013-03-22 16:21             ` [PATCH 8/4] match-trees: drop "x = x" initializations Jeff King
2013-03-22 21:26               ` Junio C Hamano
2013-03-22 21:33                 ` Junio C Hamano
2013-03-22 21:36                   ` Jeff King
2013-03-23 18:57               ` René Scharfe
2013-03-24  4:55                 ` Junio C Hamano
2013-03-24 10:01                   ` Jeff King
2013-03-24 22:46                   ` René Scharfe
2013-03-25 16:10                     ` Junio C Hamano
2013-03-21 13:44   ` [PATCH 0/4] drop some "int x = x" hacks to silence gcc warnings Joachim Schmitz
2013-03-21 13:56     ` Joachim Schmitz

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