1@node strcasestr 2@subsection @code{strcasestr} 3@findex strcasestr 4 5LSB specification:@* @url{https://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/baselib-strcasestr.html} 6 7Documentation: 8@itemize 9@item 10@ifinfo 11@ref{Search Functions,,Search Functions,libc}, 12@end ifinfo 13@ifnotinfo 14@url{https://www.gnu.org/software/libc/manual/html_node/Search-Functions.html}, 15@end ifnotinfo 16@item 17@uref{https://www.kernel.org/doc/man-pages/online/pages/man3/strcasestr.3.html,,man strcasestr}. 18@end itemize 19 20Gnulib module: strcasestr or strcasestr-simple 21 22Portability problems fixed by either Gnulib module @code{strcasestr-simple} 23or @code{strcasestr}: 24@itemize 25@item 26This function is missing on some platforms: 27AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 10, Cygwin 1.5.x, 28mingw, MSVC 14. 29@item 30This function can trigger memchr bugs on some platforms: 31glibc 2.10. 32@item 33This function can trigger false positives for long periodic needles on 34some platforms: 35glibc 2.12, Cygwin 1.7.7. 36@item 37This function may fail to find matches on some platforms: 38glibc 2.28. 39@end itemize 40 41Portability problems fixed by Gnulib module @code{strcasestr}: 42@itemize 43@item 44This function has quadratic instead of linear worst-case complexity on some 45platforms: 46glibc 2.8, FreeBSD 6.2, NetBSD 9.0, OpenBSD 4.0, Solaris 11.4. 47@end itemize 48 49Portability problems not fixed by Gnulib: 50@itemize 51@end itemize 52