C++ support (4)

[Bruno Haible]

The other change requires to add casts for xmalloc calls, and to move the
'struct slotvec' outside the function where it's currently defined - otherwise
it is not a valid template parameter for the xrealloc template (and without
the xrealloc template, one needs to add dozens of casts).

Paul, what do you think?

*** gnulib-20061026/lib/quotearg.c      2006-10-07 01:01:48.000000000 +0200
--- gnulib-20061026-modified/lib/quotearg.c     2006-10-29 23:46:27.000000000 
+0100
***************
*** 122,128 ****
  clone_quoting_options (struct quoting_options *o)
  {
    int e = errno;
!   struct quoting_options *p = xmalloc (sizeof *p);
    *p = *(o ? o : &default_quoting_options);
    errno = e;
    return p;
--- 122,128 ----
  clone_quoting_options (struct quoting_options *o)
  {
    int e = errno;
!   struct quoting_options *p = (struct quoting_options *) xmalloc (sizeof *p);
    *p = *(o ? o : &default_quoting_options);
    errno = e;
    return p;
***************
*** 554,565 ****
  {
    int e = errno;
    size_t bufsize = quotearg_buffer (0, 0, arg, argsize, o) + 1;
!   char *buf = xmalloc (bufsize);
    quotearg_buffer (buf, bufsize, arg, argsize, o);
    errno = e;
    return buf;
  }
  
  /* Use storage slot N to return a quoted version of argument ARG.
     ARG is of size ARGSIZE, but if that is SIZE_MAX, ARG is a
     null-terminated string.
--- 554,571 ----
  {
    int e = errno;
    size_t bufsize = quotearg_buffer (0, 0, arg, argsize, o) + 1;
!   char *buf = (char *) xmalloc (bufsize);
    quotearg_buffer (buf, bufsize, arg, argsize, o);
    errno = e;
    return buf;
  }
  
+ struct slotvec
+ {
+   size_t size;
+   char *val;
+ };
+ 
  /* Use storage slot N to return a quoted version of argument ARG.
     ARG is of size ARGSIZE, but if that is SIZE_MAX, ARG is a
     null-terminated string.
***************
*** 579,589 ****
    static char slot0[256];
    static unsigned int nslots = 1;
    unsigned int n0 = n;
-   struct slotvec
-     {
-       size_t size;
-       char *val;
-     };
    static struct slotvec slotvec0 = {sizeof slot0, slot0};
    static struct slotvec *slotvec = &slotvec0;
  
--- 585,590 ----
***************
*** 604,610 ****
  
        if (slotvec == &slotvec0)
        {
!         slotvec = xmalloc (sizeof *slotvec);
          *slotvec = slotvec0;
        }
        slotvec = xrealloc (slotvec, n1 * sizeof *slotvec);
--- 605,611 ----
  
        if (slotvec == &slotvec0)
        {
!         slotvec = (struct slotvec *) xmalloc (sizeof *slotvec);
          *slotvec = slotvec0;
        }
        slotvec = xrealloc (slotvec, n1 * sizeof *slotvec);
***************
*** 622,628 ****
        slotvec[n].size = size = qsize + 1;
        if (val != slot0)
          free (val);
!       slotvec[n].val = val = xmalloc (size);
        quotearg_buffer (val, size, arg, argsize, options);
        }
  
--- 623,629 ----
        slotvec[n].size = size = qsize + 1;
        if (val != slot0)
          free (val);
!       slotvec[n].val = val = (char *) xmalloc (size);
        quotearg_buffer (val, size, arg, argsize, options);
        }