9.1026 strstr

POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/functions/strstr.html

Gnulib module: strstr or strstr-simple

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

• This function can trigger memchr bugs on some platforms: glibc 2.10.
• 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 strstr:

• This function has quadratic instead of linear worst-case complexity on some platforms: glibc 2.8, Mac OS X 10.5, FreeBSD 6.2, NetBSD 5.0, OpenBSD 4.0, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 11 2011-11, Cygwin 1.5.x, mingw, MSVC 9.

Portability problems not fixed by Gnulib:

• This function cannot work correctly on character strings in most multibyte locales. Gnulib provides an alternative function mbsstr that works on character strings in all locales.