X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/6f3acea989cf8191569cc59d492722662fb25464..0e4472a082cdbb50ee54e1886abc332f3e11bcce:/lib/charset.h

diff --git a/lib/charset.h b/lib/charset.h
index 369d2b9..f77c583 100644
--- a/lib/charset.h
+++ b/lib/charset.h
@@ -48,7 +48,12 @@ char *any2any(const char *from/*encoding or 0*/,
  * that iconv knows.  If FROM and TO are both 0 then ANY is returned
  * unchanged. */
 
-
+/** @brief Insist that @p s is not null
+ * @param s Pointer to check
+ * @return @p s
+ *
+ * Terminates the process if @p s is a null pointer.
+ */
 static inline char *nullcheck(char *s) {
   if(!s) exitfn(1);			/* assume an error already reported */
   return s;