5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/strstr.html}
7 Gnulib module: strstr or strstr-simple
9 Portability problems fixed by either Gnulib module @code{strstr-simple}
13 This function can trigger memchr bugs on some platforms:
16 This function can trigger false positives for long periodic needles on
18 glibc 2.12, Cygwin 1.7.7.
20 This function may fail to find matches on some platforms:
24 Portability problems fixed by Gnulib @code{strstr}:
27 This function has quadratic instead of linear worst-case complexity on some
29 glibc 2.8, Mac OS X 10.13, FreeBSD 6.2, NetBSD 9.0, OpenBSD 4.0, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 11.4, Cygwin 1.5.x, mingw, MSVC 14.
32 Portability problems not fixed by Gnulib:
35 This function cannot work correctly on character strings in most multibyte
36 locales. Gnulib provides an alternative function @code{mbsstr} that works
37 on character strings in all locales.