+
+#define gstring_release_unused(g) \
+ gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
+
+static inline void
+gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
+{
+if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
+}
+
+
+/* sprintf-append to a growable-string */
+
+#define string_fmt_append(g, fmt, ...) \
+ string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
+ SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
+
+#define string_fmt_append_f(g, flgs, fmt, ...) \
+ string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
+ flgs, fmt, __VA_ARGS__)
+
+static inline gstring *
+string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
+ unsigned flags, const char *format, ...)
+{
+va_list ap;
+va_start(ap, format);
+g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
+ flags, format, ap);
+va_end(ap);
+return g;
+}
+
+/******************************************************************************/
+
+#define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
+
+static inline dns_answer *
+store_get_dns_answer_trc(const uschar * func, unsigned line)
+{
+return store_get_3(sizeof(dns_answer), TRUE, CCS func, line); /* use tainted mem */
+}
+
+/******************************************************************************/
+/* Routines with knowledge of spool layout */
+
+# ifndef COMPILE_UTILITY
+static inline void
+spool_pname_buf(uschar * buf, int len)
+{
+snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
+}
+
+static inline uschar *
+spool_dname(const uschar * purpose, uschar * subdir)
+{
+return string_sprintf("%s/%s/%s/%s",
+ spool_directory, queue_name, purpose, subdir);
+}
+# endif
+
+static inline uschar *
+spool_q_sname(const uschar * purpose, const uschar * q, uschar * subdir)
+{
+return string_sprintf("%s%s%s%s%s",
+ q, *q ? "/" : "",
+ purpose,
+ *subdir ? "/" : "", subdir);
+}
+
+static inline uschar *
+spool_sname(const uschar * purpose, uschar * subdir)
+{
+return spool_q_sname(purpose, queue_name, subdir);
+}
+
+static inline uschar *
+spool_q_fname(const uschar * purpose, const uschar * q,
+ const uschar * subdir, const uschar * fname, const uschar * suffix)
+{
+return string_sprintf("%s/%s/%s/%s/%s%s",
+ spool_directory, q, purpose, subdir, fname, suffix);
+}
+
+static inline uschar *
+spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
+ const uschar * suffix)
+{
+#ifdef COMPILE_UTILITY /* version avoiding string-extension */
+int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
+ + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
+uschar * buf = store_get(len, FALSE);
+string_format(buf, len, "%s/%s/%s/%s/%s%s",
+ spool_directory, queue_name, purpose, subdir, fname, suffix);
+return buf;
+#else
+return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
+#endif
+}
+