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Re: [PATCH] Fix maybe-uninitialized warnings found by gcc 9 -flto

From
Junio C Hamano <gitster@pobox.com>
Date
Sep 5, 2019, 18:22 UTC
Message-ID
<xmqq36har4aq.fsf@gitster-ct.c.googlers.com>
In-Reply-To
<20190905180348.GC23663@sigill.intra.peff.net>
Jeff King <peff@peff.net> writes:
Show 5 quoted lines
> I said earlier that I wouldn't mind seeing "namelen = 0" here. But I
> think there is a much more direct solution: keeping the assignment and
> point of use closer together. That makes it more clear both to the
> compiler and to a human when we expect the variable to be valid. In
> fact, since it's only used once, we can drop the variable altogther. :)
Yeah, that sounds like a nice solution.
Show 26 quoted lines
> diff --git a/t/helper/test-read-cache.c b/t/helper/test-read-cache.c
> index 7e79b555de..244977a29b 100644
> --- a/t/helper/test-read-cache.c
> +++ b/t/helper/test-read-cache.c
> @@ -4,11 +4,10 @@
>  
>  int cmd__read_cache(int argc, const char **argv)
>  {
> -	int i, cnt = 1, namelen;
> +	int i, cnt = 1;
>  	const char *name = NULL;
>  
>  	if (argc > 1 && skip_prefix(argv[1], "--print-and-refresh=", &name)) {
> -		namelen = strlen(name);
>  		argc--;
>  		argv++;
>  	}
> @@ -24,7 +23,7 @@ int cmd__read_cache(int argc, const char **argv)
>  
>  			refresh_index(&the_index, REFRESH_QUIET,
>  				      NULL, NULL, NULL);
> -			pos = index_name_pos(&the_index, name, namelen);
> +			pos = index_name_pos(&the_index, name, strlen(name));
>  			if (pos < 0)
>  				die("%s not in index", name);
>  			printf("%s is%s up to date\n", name,
Previous: Jeff KingNext: Jeff King
Message 11 of 23 in “Fix maybe-uninitialized warnings found by gcc 9 -flto”
  1. Fix maybe-uninitialized warnings found by gcc 9 -fltoStephan Beyer, Sep 5, 2019
  2. René ScharfeSep 5, 2019
  3. Jeff KingSep 5, 2019
  4. René ScharfeSep 5, 2019
  5. Junio C HamanoSep 5, 2019
  6. René ScharfeSep 5, 2019
  7. Junio C HamanoSep 5, 2019
  8. Junio C HamanoSep 5, 2019
  9. Junio C HamanoSep 5, 2019
  10. Jeff KingSep 5, 2019
  11. Junio C HamanoSep 5, 2019
  12. Jeff KingSep 5, 2019
  13. 1/6 git-am: handle missing "author" when parsing commitJeff King, Sep 5, 2019
  14. 2/6 pack-objects: use object_id in packlist_alloc()Jeff King, Sep 5, 2019
  15. 3/6 bulk-checkin: zero-initialize hashfile_checkpointJeff King, Sep 5, 2019
  16. 4/6 diff-delta: set size out-parameter to 0 for NULL deltaJeff King, Sep 5, 2019
  17. Stephan BeyerSep 5, 2019
  18. Jeff KingSep 5, 2019
  19. Stephan BeyerSep 5, 2019
  20. Jeff KingSep 6, 2019
  21. 6/6 pack-objects: drop packlist index_pos optimizationJeff King, Sep 6, 2019
  22. 5/6 test-read-cache: drop namelen variableJeff King, Sep 5, 2019
  23. 6/6 pack-objects: drop packlist index_pos optimizationJeff King, Sep 5, 2019

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