Re: [PATCH] perf: Fix a precedence bug

From: Masami Hiramatsu
Date: Fri Feb 27 2015 - 05:41:13 EST


Hi,

(2015/02/27 18:35), He Kuang wrote:
> The minus operator has higher precedence than ?:
> Add parentheses around ?: fix this.

Thank you for fixing that,

Could you give us an actual example of the result?
e.g. What happened? and how to reproduce it?

Thank you,

> ---
> tools/perf/util/probe-event.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
> index 919937e..bed8d0f 100644
> --- a/tools/perf/util/probe-event.c
> +++ b/tools/perf/util/probe-event.c
> @@ -150,7 +150,7 @@ static u64 kernel_get_symbol_address_by_name(const char *name, bool reloc)
> sym = __find_kernel_function_by_name(name, &map);
> if (sym)
> return map->unmap_ip(map, sym->start) -
> - (reloc) ? 0 : map->reloc;
> + ((reloc) ? 0 : map->reloc);
> }
> return 0;
> }
>


--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@xxxxxxxxxxx


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