[PATCH] Correctly output internal-adjusted hexadecimals

[Paolo Carlini]

Hi all,

this is a minor nit indeed, which I have encountered while having a look to
PR3655 (more about it after the exponential allocator ;-)

In short, currently, internal-hex numbers are not properly output. I have
changed the new helper function __pad (in locale_facets.tcc) to deal with the
__testhex case similarly to what is currently done for __testsign.

As usual, booted and tested on i686-pc-linux-gnu.

Cheers,
Paolo.

Paolo Carlini <pcarlini@unitus.it>

    * include/bits/locale_facets.tcc (__pad): correctly output hex
    numbers internally aligned.
    * testsuite/27_io/ostream_inserter_arith.cc: Add testcase.




*** locale_facets.tcc.orig      Wed Nov 28 20:35:43 2001
--- locale_facets.tcc   Wed Nov 28 21:30:06 2001
*************** namespace std
*** 1957,1967 ****
            {
              __news[0] = __olds[0];
              __news[1] = __olds[1];
!             __mod += 2;
!             __news += 2;
!             __beg = const_cast<char_type*>(__olds + __mod);
!             __beglen = __oldlen - __mod;
!             __end = __pads;
            }
          else if (__testsign)
            {
--- 1957,1967 ----
            {
              __news[0] = __olds[0];
              __news[1] = __olds[1];
!             __mod += 2;
!             __news += 2;
!             __beg = __pads;
!             __beglen = __plen;
!             __end = const_cast<char_type*>(__olds + __mod);
            }
          else if (__testsign)
            {


*** ostream_inserter_arith.cc.orig      Wed Nov 28 20:45:17 2001
--- ostream_inserter_arith.cc   Wed Nov 28 21:11:56 2001
*************** test03()
*** 309,318 ****
--- 309,331 ----
  }

  int
+ test04()
+ {
+   stringbuf strbuf;
+   ostream o(&strbuf);
+
+   o << hex << showbase << setw(6) << internal << 255;
+   VERIFY( strbuf.str() == "0x  ff" );
+
+   return 0;
+ }
+
+ int
  main()
  {
    test01();
    test02();
+   test04();
  #ifdef TEST_NUMPUT_VERBOSE
    cout << "Test passed!" << endl;
  #endif