MSVC 9.
@item
@samp{struct timeval} is not defined on some platforms.
+@item
+@samp{struct timeval} is defined with a @code{tv_sec} type that is
+narrower than @code{time_t}
+on some native Windows platforms:
+mingw64 in 64-bit mode,
+mingw64 in 32-bit mode when @code{__MINGW_USE_VC2005_COMPAT} is defined,
+MSVC 9 in 64-bit mode,
+MSVC 9 in 32-bit mode when @code{_USE_32BIT_TIME_T} is not defined.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
+@item
+@samp{struct timeval} is defined with a @code{tv_sec} type that is
+wider than @code{time_t}:
+OpenBSD 5.1 in 64-bit mode.
@end itemize