Recent strstream regression: reversion needed? (strstreambuf leaks)

[Michael Veksler]

The (partial) test-case is at:
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6594 


Maybe the originator (edh) of this PR can supply a more complete 
test-case.

I did not run the partial testcase myself, but according to the audit 
trail it looks like a real
(noncritical) problem. Anyway, this PR should be reopened, and the patch 
reverted.
The test-case displaying the regression should be added to PR's audit 
trail.

  Michael

P.S.
 Can I reopen a closed PR? If yes, then how?
 I have no administrative rights in GNATS.