linux-kernel - Re: [PATCH 07/11] perf tools report: Support running scripts for current time range

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Date:   Mon, 25 Feb 2019 13:55:55 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andi Kleen <andi@...stfloor.org>
Cc:     acme@...nel.org, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org, jolsa@...nel.org,
        namhyung@...nel.org, eranian@...gle.com,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 07/11] perf tools report: Support running scripts for
 current time range

On Sun, Feb 24, 2019 at 07:37:18AM -0800, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> When using the time sort key, add new context menus to run
> scripts for only the currently selected time range. Compute
> the correct range for the selection add pass it as the --time option to
> perf script.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

getting compilation error:

  CC       ui/browsers/hists.o
ui/browsers/hists.c: In function ‘perf_evsel__hists_browse’:
ui/browsers/hists.c:2565:8: error: ‘%s’ directive output may be truncated writing up to 63 bytes into a region of size between 28 and 91 [-Werror=format-truncation=]
   n += snprintf(script_opt + n, len - n, " --time %s,%s", start, end);
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:862,
                 from ui/browsers/hists.c:5:
/usr/include/bits/stdio2.h:64:10: note: ‘__builtin___snprintf_chk’ output between 10 and 136 bytes into a destination of size 100
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


[jolsa@...va perf]$ gcc --version
gcc (GCC) 8.2.1 20181215 (Red Hat 8.2.1-6)

jirka