memmem
------

Gnulib module: memmem or memmem-simple

Portability problems fixed by either Gnulib module memmem-simple or memmem:

  * This function is missing on some platforms: MacOS X 10.5, FreeBSD 5.2.1, OpenBSD 4.0, AIX 4.3.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw, Interix 3.5, BeOS.

  * This function has reversed arguments on some older platforms: Linux libc 5.0.9

  * This function can trigger false positives for long periodic needles on some platforms: glibc 2.12, Cygwin 1.7.7.

Portability problems fixed by Gnulib module memmem:

  * This function returns incorrect values in some cases, such as when given an empty needle: glibc <= 2.0, Cygwin 1.5.x.

  * 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 2010-11, Cygwin 1.5.x.

Portability problems not fixed by Gnulib: