(O_DIRECTORY): Define, if needed.

[gnulib.git] / lib / quotearg.c

diff --git a/lib/quotearg.c b/lib/quotearg.c
index 9ed8a5f..d5fbc9e 100644 (file)
--- a/lib/quotearg.c
+++ b/lib/quotearg.c
@@ -92,15 +92,14 @@ size_t mbrtowc ();
 #define INT_BITS (sizeof (int) * CHAR_BIT)
 
 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-/* Undefine to protect against the definition in wctype.h of solaris2.6.   */
-# undef ISASCII
-# define ISASCII(c) 1
+# define IN_CTYPE_DOMAIN(c) 1
 #else
-# define ISASCII(c) isascii (c)
+# define IN_CTYPE_DOMAIN(c) isascii(c)
 #endif
+
 /* Undefine to protect against the definition in wctype.h of solaris2.6.   */
 #undef ISPRINT
-#define ISPRINT(c) (ISASCII (c) && isprint (c))
+#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
 
 struct quoting_options
 {
@@ -530,12 +529,17 @@ static char *
 quotearg_n_options (int n, char const *arg,
                    struct quoting_options const *options)
 {
-  static unsigned int nslots;
-  static struct slotvec
+  /* Preallocate a slot 0 buffer, so that the caller can always quote
+     one small component of a "memory exhausted" message in slot 0.  */
+  static char slot0[256];
+  static unsigned int nslots = 1;
+  struct slotvec
     {
       size_t size;
       char *val;
-    } *slotvec;
+    };
+  static struct slotvec slotvec0 = {sizeof slot0, slot0};
+  static struct slotvec *slotvec = &slotvec0;
 
   if (nslots <= n)
     {
@@ -543,6 +547,11 @@ quotearg_n_options (int n, char const *arg,
       size_t s = n1 * sizeof (struct slotvec);
       if (! (0 < n1 && n1 == s / sizeof (struct slotvec)))
        abort ();
+      if (slotvec == &slotvec0)
+       {
+         slotvec = (struct slotvec *) xmalloc (sizeof (struct slotvec));
+         *slotvec = slotvec0;
+       }
       slotvec = (struct slotvec *) xrealloc (slotvec, s);
       memset (slotvec + nslots, 0, (n1 - nslots) * sizeof (struct slotvec));
       nslots = n;
@@ -556,7 +565,7 @@ quotearg_n_options (int n, char const *arg,
     if (size <= qsize)
       {
        slotvec[n].size = size = qsize + 1;
-       slotvec[n].val = val = xrealloc (val, size);
+       slotvec[n].val = val = xrealloc (val == slot0 ? 0 : val, size);
        quotearg_buffer (val, size, arg, (size_t) -1, options);
       }