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Date: Tue, 2 Apr 2019 05:57:33 -0400 (EDT)
From: Frediano Ziglio <fziglio@...hat.com>
To: musl@...ts.openwall.com
Subject: Re: [PATCH 1/2] use __strchrnul instead of strchr and strlen
ping
>
> The result is the same but takes less code.
> Note that __execvpe calls getenv which calls __strchrnul so even
> using static output the size of the executable won't grow.
> ---
> src/process/execvp.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/src/process/execvp.c b/src/process/execvp.c
> index 1fdf036f..ef3b9dd5 100644
> --- a/src/process/execvp.c
> +++ b/src/process/execvp.c
> @@ -28,8 +28,7 @@ int __execvpe(const char *file, char *const argv[], char
> *const envp[])
>
> for(p=path; ; p=z) {
> char b[l+k+1];
> - z = strchr(p, ':');
> - if (!z) z = p+strlen(p);
> + z = __strchrnul(p, ':');
> if (z-p >= l) {
> if (!*z++) break;
> continue;
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