| @node strstr |
| @section @code{strstr} |
| @findex strstr |
| |
| POSIX specification:@* @url{https://pubs.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. |
| @item |
| This function can trigger false positives for long periodic needles on |
| some platforms: |
| glibc 2.12, Cygwin 1.7.7. |
| @item |
| This function may fail to find matches on some platforms: |
| glibc 2.28. |
| @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, Mac OS X 10.5, FreeBSD 6.2, NetBSD 5.0, OpenBSD 4.0, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 11.4, Cygwin 1.5.x, mingw, MSVC 14. |
| @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 |
