[patch, libstdc++, testsuite] Modify tests to use tmpnam()

[Janis Johnson]

On Wed, 2010-03-03 at 13:35 -0800, Steve Ellcey wrote:
> I took a look at two libstdc++ tests that are failing for me on IA64
> HP-UX and found that the problem was related to running the tests over
> NFS.  Both tests are using mkfifo to create pipe's in the current
> working directory and that works for me on a local filesystem but fails
> over NFS.  I am not sure if that is an HP-UX bug or not, but I would
> like to change the tests to use tmpnam to create the pipes, this fixes
> the problem on IA64 HP-UX and causes no regressions.  There are already
> tests (27_io/headers/cstdio/macros.cc and 
> 27_io/headers/cstdio/functions_std.cc) that check for the existence of
> the L_tmpnam macro and the tmpnam function so using them in these
> tests shouldn't be a problem.
> 
> OK for checkin?

tmpnam is declared, and L_tmpnam is defined, in <cstdio> which is
already included in 9661-1.cc but not 7.cc.  Unless there's an
objection from a libstdc++ maintainer the patch is OK if you
include <cstdio> in 7.cc.

Janis

> 
> Steve Ellcey
> sje@cup.hp.com
> 
> 2010-03-03  Steve Ellcey  <sje@cup.hp.com>
> 
> 	* testsuite/27_io/objects/wchar_t/7.cc: Use tmpnam.
> 	* testsuite/27_io/objects/wchar_t/9661-1.cc: Ditto.
> 
> 
> Index: testsuite/27_io/objects/wchar_t/7.cc
> ===================================================================
> --- testsuite/27_io/objects/wchar_t/7.cc	(revision 157186)
> +++ testsuite/27_io/objects/wchar_t/7.cc	(working copy)
> @@ -44,7 +44,8 @@ bool test07()
>    using namespace __gnu_test;
>    bool test __attribute__((unused)) = true;
> 
> -  const char* name = "tmp_fifo4";
> +  char name[L_tmpnam];
> +  tmpnam(name);
> 
>    signal(SIGPIPE, SIG_IGN);
> 
> Index: testsuite/27_io/objects/wchar_t/9661-1.cc
> ===================================================================
> --- testsuite/27_io/objects/wchar_t/9661-1.cc	(revision 157186)
> +++ testsuite/27_io/objects/wchar_t/9661-1.cc	(working copy)
> @@ -44,7 +44,8 @@ bool test01()
> 
>    bool test __attribute__((unused)) = true;
> 
> -  const char* name = "tmp_fifo5";
> +  char name[L_tmpnam];
> +  tmpnam(name);
> 
>    signal(SIGPIPE, SIG_IGN);
>