RFR: JDK-8289633: Forbid raw C-heap allocation functions in hotspot and fix findings [v2]

[Thomas Stuefe]

On Mon, 4 Jul 2022 10:41:32 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Thomas Stuefe has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Forgot one..
>>  - Review feedback Kim
>
> src/hotspot/os/linux/os_perf_linux.cpp line 788:
> 
>> 786:   jio_snprintf(buffer, PATH_MAX, "/proc/%s/exe", _entry->d_name);
>> 787:   buffer[PATH_MAX - 1] = '\0';
>> 788:   ALLOW_C_FUNCTION(::realpath, return realpath(buffer, _exePath);)
> 
> Shouldn't this be using `os::Posix::realpath`?

Yes, I agree. Fixed.

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PR: https://git.openjdk.org/jdk/pull/9356