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SubjectRe: [Perf bug-fix] check null of sym pointer before using it
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Hi,

On Mon, 11 Jun 2012 10:07:10 +0800, Shan Wei wrote:
> ping.....
>
> It's a obvious function bug.....
>
> Shan Wei said, at 2012/6/5 13:14:
>
>> From: Samuel Liao <samuelliao@tencent.com>
>>
>> Sometimes, sym will be null that causing perf crash.
>>
>> Signed-off-by: Shan Wei <davidshan@tencent.com>

Reviewed-by: Namhyung Kim <namhyung@kernel.org>

Thanks for the fix.
Namhyung


>> ---
>> tools/perf/ui/browsers/annotate.c | 4 +++-
>> 1 files changed, 3 insertions(+), 1 deletions(-)
>>
>> diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
>> index 4deea6a..50873a8 100644
>> --- a/tools/perf/ui/browsers/annotate.c
>> +++ b/tools/perf/ui/browsers/annotate.c
>> @@ -814,7 +814,7 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
>> {
>> struct disasm_line *pos, *n;
>> struct annotation *notes;
>> - const size_t size = symbol__size(sym);
>> + size_t size;
>> struct map_symbol ms = {
>> .map = map,
>> .sym = sym,
>> @@ -834,6 +834,8 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
>> if (sym == NULL)
>> return -1;
>>
>> + size = symbol__size(sym);
>> +
>> if (map->dso->annotate_warned)
>> return -1;
>>


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