[sanitizer] only lower the soft coresize limit in DisableCoreDumper

[Kostya Serebryany]

what's the reason?


On Wed, Jun 25, 2014 at 6:56 PM, Stephan Bergmann <sbergman at redhat.com>
wrote:

> ...so that e.g. a spawned sub-thread could increase that limit again:
>
>  Index: lib/sanitizer_common/sanitizer_posix_libcdep.cc
>> ===================================================================
>> --- lib/sanitizer_common/sanitizer_posix_libcdep.cc     (revision 211695)
>> +++ lib/sanitizer_common/sanitizer_posix_libcdep.cc     (working copy)
>> @@ -46,8 +46,10 @@
>>
>>  void DisableCoreDumper() {
>>    struct rlimit nocore;
>> +  if (getrlimit(RLIMIT_CORE, &nocore) == -1) {
>> +      nocore.rlim_max = 0;
>> +  }
>>    nocore.rlim_cur = 0;
>> -  nocore.rlim_max = 0;
>>    setrlimit(RLIMIT_CORE, &nocore);
>>  }
>>
>>
> Stephan
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