add comment from glibc version

diff --git a/lib/regex.c b/lib/regex.c
index a69d100..34ad195 100644 (file)
--- a/lib/regex.c
+++ b/lib/regex.c
@@ -55,6 +55,7 @@
 /* For platform which support the ISO C amendement 1 functionality we
    support user defined character classes.  */
 #if WIDE_CHAR_SUPPORT
+/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.  */
 # include <wchar.h>
 # include <wctype.h>
 #endif