[Bug testsuite/79293] [7 regression] gcc.dg/tree-ssa/builtin-sprintf.c fails starting with r244953

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79293

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2017-01-30
          Component|tree-optimization           |testsuite
           Assignee|unassigned at gcc dot gnu.org      |msebor at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.  The following is the test case on line 724:

  RNG ( 3, 13, 14, "%Lg", 0.1L);

It expects the call to sprintf ("%Lg", 0.1L) to return a value between 3 and 13
but on powerpc64 it returns between 3 and 4 bytes ("0.1" when the argument is
rounded up and "0.0999999" when it's rounded down, with the decimal point
taking resulting in between 1 and 6 bytes in multibyte locales).

The test case needs to be relaxed for powerpc64.  Let me take care of it.