[PATCH] manual: Fix backtraces code example [BZ #10441]

[Girish Joshi]

Ping.

Girish Joshi


On Tue, Mar 10, 2020 at 9:40 PM Girish Joshi <girish946@gmail.com> wrote:
>
> From bd99113d312012bde774a66c36b4894355175661 Mon Sep 17 00:00:00 2001
> From: Girish Joshi <girish946@gmail.com>
> Date: Tue, 10 Mar 2020 17:15:08 +0530
> Subject: [PATCH] manual: Fix backtraces code example [BZ #10441]
>
> Validation for pointer returned by backtrace_symbols () added.
> Type of variables size and i is changed from size_t to int.
>
> Variable size is used to collect the result from backtrace ()
> that is an int. i is the loop counter variable so it can be an int.
>
> Since, size_t size is changed to int size, in printf %zd is changed to %d.
> ---
>  manual/examples/execinfo.c | 13 +++++++------
>  1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/manual/examples/execinfo.c b/manual/examples/execinfo.c
> index a789b6b5a7..01fd2d2dc2 100644
> --- a/manual/examples/execinfo.c
> +++ b/manual/examples/execinfo.c
> @@ -24,17 +24,18 @@ void
>  print_trace (void)
>  {
>    void *array[10];
> -  size_t size;
>    char **strings;
> -  size_t i;
> +  int size, i;
>
>    size = backtrace (array, 10);
>    strings = backtrace_symbols (array, size);
> +  if (strings)
> +  {
>
> -  printf ("Obtained %zd stack frames.\n", size);
> -
> -  for (i = 0; i < size; i++)
> -     printf ("%s\n", strings[i]);
> +    printf ("Obtained %d stack frames.\n", size);
> +    for (i = 0; i < size; i++)
> +      printf ("%s\n", strings[i]);
> +  }
>
>    free (strings);
>  }
> --
> 2.21.1
>
>
> Girish Joshi