X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=doc%2Fglibc-functions%2Fmemmem.texi;h=93ad26abb4ab7f95407a89d6f61588b3c4f28a37;hb=38e8c084b95e98c4e763df8cfc43a141aa93fc5f;hp=ae3e276e8615465aebb8336fc46c801919565833;hpb=038189bd6a3838c1ebeaaaf03752631918b86335;p=gnulib.git

diff --git a/doc/glibc-functions/memmem.texi b/doc/glibc-functions/memmem.texi
index ae3e276e8..93ad26abb 100644
--- a/doc/glibc-functions/memmem.texi
+++ b/doc/glibc-functions/memmem.texi
@@ -2,15 +2,41 @@
 @subsection @code{memmem}
 @findex memmem
 
-Gnulib module: ---
+Gnulib module: memmem or memmem-simple
 
-Portability problems fixed by Gnulib:
+Both modules implement the same replacement for the @code{memmem} function
+with the memmem module providing a replacement on more platforms where
+the existing @code{memmem} function has a quadratic worst-case complexity.
+
+Portability problems fixed by either Gnulib module @code{memmem-simple}
+or @code{memmem}:
 @itemize
+@item
+This function is missing on some platforms:
+Mac OS X 10.5, FreeBSD 5.2.1, OpenBSD 4.0, Minix 3.1.8, AIX 4.3.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw, MSVC 9, Interix 3.5, BeOS.
+@item
+This function has reversed arguments on some older platforms:
+Linux libc 5.0.9
+@item
+This function can trigger false positives for long periodic needles on
+some platforms:
+glibc 2.12, Cygwin 1.7.7.
+
+@item
+This function returns incorrect values in some cases, such as when
+given an empty needle:
+glibc <= 2.0, Solaris 11 2011-11, Cygwin 1.5.x.
 @end itemize
 
-Portability problems not fixed by Gnulib:
+Performance problems fixed by Gnulib module @code{memmem}:
 @itemize
 @item
-This function is missing on some platforms:
-MacOS X 10.3, FreeBSD 5.2.1, OpenBSD 3.8, AIX 4.3.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw, Interix 3.5, BeOS.
+This function has quadratic instead of linear worst-case complexity on some
+platforms:
+glibc 2.8, FreeBSD 6.2, NetBSD 5.0, AIX 5.1, Solaris 11 2011-11, Cygwin 1.5.x.
+Note for small needles the replacement may be slower.
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
 @end itemize