[PATCH] tools/perf/tests: Fix compilation error with strncpy in tests/tool_pmu

[Namhyung Kim]

On Sun, 13 Oct 2024 23:07:42 +0530, Athira Rajeev wrote:

> perf fails to compile on systems with GCC version11
> as below:
> 
> In file included from /usr/include/string.h:519,
>                  from /home/athir/perf-tools-next/tools/include/linux/bitmap.h:5,
>                  from /home/athir/perf-tools-next/tools/perf/util/pmu.h:5,
>                  from /home/athir/perf-tools-next/tools/perf/util/evsel.h:14,
>                  from /home/athir/perf-tools-next/tools/perf/util/evlist.h:14,
>                  from tests/tool_pmu.c:3:
> In function ‘strncpy’,
>     inlined from ‘do_test’ at tests/tool_pmu.c:25:3:
> /usr/include/bits/string_fortified.h:95:10: error: ‘__builtin_strncpy’ specified bound 128 equals destination size [-Werror=stringop-truncation]
>    95 |   return __builtin___strncpy_chk (__dest, __src, __len,
>       |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    96 |                                   __glibc_objsize (__dest));
>       |                                   ~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> [...]

Applied to perf-tools-next, thanks!

Best regards,
Namhyung