+/* A storage slot with size and pointer to a value. */
+struct slotvec
+{
+ size_t size;
+ char *val;
+};
+
+/* 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;
+static struct slotvec slotvec0 = {sizeof slot0, slot0};
+static struct slotvec *slotvec = &slotvec0;
+
+void
+quotearg_free (void)
+{
+ struct slotvec *sv = slotvec;
+ unsigned int i;
+ for (i = 1; i < nslots; i++)
+ free (sv[i].val);
+ if (sv[0].val != slot0)
+ {
+ free (sv[0].val);
+ slotvec0.size = sizeof slot0;
+ slotvec0.val = slot0;
+ }
+ if (sv != &slotvec0)
+ {
+ free (sv);
+ slotvec = &slotvec0;
+ }
+ nslots = 1;
+}
+