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From: Andreas Schwab <schwab@suse.de>
To: Adhemerval Zanella via Libc-alpha <libc-alpha@sourceware.org>
Cc: Florian Weimer <fweimer@redhat.com>,  Adhemerval Zanella
 <adhemerval.zanella@linaro.org>
Subject: Re: [PATCH v2] Move libc_freeres_ptrs and libc_subfreeres to
 hidden/weak functions
References: <20221213122058.3736761-1-adhemerval.zanella@linaro.org>
X-Yow: TAILFINS!!  ...click...
Date: Tue, 13 Dec 2022 13:30:33 +0100
In-Reply-To: <20221213122058.3736761-1-adhemerval.zanella@linaro.org>
	(Adhemerval Zanella via Libc-alpha's message of "Tue, 13 Dec 2022
	09:20:58 -0300")
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On Dez 13 2022, Adhemerval Zanella via Libc-alpha wrote:

> +#define set_freeres_declare_name(__name)			\
> +  __name ## _aux
> +#define set_freeres_declare_ptr(__name, __ptr)			\
> +  void set_freeres_declare_name (__name) (void)			\
> +  {								\
> +    if (__ptr != NULL)						\
> +      free (__ptr);						\

You can call free with NULL just fine.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."