RFR: build pragma error with gcc 4.4.7

[Michal Vala]

On 03/20/2018 12:23 AM, Kim Barrett wrote:

> 
> Given that there seem to be no callers of os::readdir that share the
> DIR* among multiple threads, it would seem easier to just replace the
> use of ::readdir_r with ::readdir.  That seems to be the intent in the
> deprecation decision; use ::readdir, and either don't share a DIR*
> among threads, or use external locking when doing so.
> 
> There are also problems with the patch as provided.
> 
> (1) Since PRAGMA_DIAG_PUSH/POP do nothing in the version of gcc this
> change is being made in support of, the warning would be disabled for
> all following code in any translation unit that includes this file.
> That doesn't seem good.
> 
> (2) The default empty definition for PRAGMA_DEPRECATED_IGNORED is
> missing.  That means the macro can't be used in shared code, in which
> case having defined in (shared) compilerWarnings.hpp is questionable.
> 

Thanks for the review, these are valid comments. I'll prepare new patch 
replacing ::readdir_r with ::readdir.

-- 
Michal Vala
OpenJDK QE
Red Hat Czech