[patch] libstdc++/67747 Allocate space for dirent::d_name

[Jonathan Wakely]

On 01/10/15 19:38 +0100, Jonathan Wakely wrote:
>On 01/10/15 18:23 +0100, Jonathan Wakely wrote:
>>+    struct op_delete {
>>+	void operator()(void* p) const { ::operator delete(p); }
>>+    };
>>+    std::unique_ptr<::dirent*, op_delete> ptr;
>
>Oops, that should be dirent not dirent* i.e.
>
>   std::unique_ptr<::dirent, op_delete> ptr;
>
>(Found on AIX, where NAME_MAX isn't defined.)

Revised patch fixing that, adjusting native_readdir() to work on AIX
where readdir_r returns non-zero at end-of-directory, and following
the advice of https://womble.decadent.org.uk/readdir_r-advisory.html
by using fpathconf and dirfd.

Tested x86_64-dragonfly4.2, powerpc64le-linux and powerpc-aix7.

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