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@node strstr
@section @code{strstr}
@findex strstr
POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/strstr.html}
Gnulib module: strstr or strstr-simple
Portability problems fixed by either Gnulib module @code{strstr-simple}
or @code{strstr}:
@itemize
@item
This function can trigger memchr bugs on some platforms:
glibc 2.10.
@end itemize
Portability problems fixed by Gnulib @code{strstr}:
@itemize
@item
This function has quadratic instead of linear worst-case complexity on some
platforms:
glibc 2.8, MacOS X 10.3, FreeBSD 6.2, NetBSD 3.0, OpenBSD 4.0, AIX
5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x, mingw.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
This function cannot work correctly on character strings in most multibyte
locales. Gnulib provides an alternative function @code{mbsstr} that works
on character strings in all locales.
@end itemize
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