@itemize
@item
This function has an incompatible declaration on some platforms:
-Solaris 10 (when @code{_POSIX_PTHREAD_SEMANTICS} is not defined).
+Solaris 11 2010-11 (when @code{_POSIX_PTHREAD_SEMANTICS} is not defined).
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
-mingw, BeOS.
+Minix 3.1.8, mingw, MSVC 9, BeOS.
@item
On Linux/glibc platforms before the advent of NPTL, signals could only be
sent to one particular thread. In POSIX, signals are sent to the entire