Signed-off-by: Alejandro Colomar <colomar.6.4.3@xxxxxxxxx> --- man7/system_data_types.7 | 42 ++++++++++++++++++++++++++++++++++++++-- 1 file changed, 40 insertions(+), 2 deletions(-) diff --git a/man7/system_data_types.7 b/man7/system_data_types.7 index e42cf2557..f10f12754 100644 --- a/man7/system_data_types.7 +++ b/man7/system_data_types.7 @@ -679,7 +679,6 @@ See also the .I uintptr_t and .I void * -.\" TODO: Document void * types in this page. .RE .\"------------------------------------- lconv ------------------------/ @@ -1781,7 +1780,6 @@ See also the .I intptr_t and .I void * -.\" TODO: Document void * types in this page. .RE .\"------------------------------------- va_list ----------------------/ @@ -1815,6 +1813,46 @@ See also: .BR va_copy (3), .BR va_end (3) .RE +.\"------------------------------------- void * -----------------------/ +.TP +.I void * +.RS +According to the C language standard, +a pointer to any object type may be converted to a pointer to +.I void +and back. +POSIX further requires that any pointer, +including pointers to functions, +may be converted to a pointer to +.I void +and back. +.PP +Conversions from and to any other pointer type are done implicitly, +not requiring casts at all. +.PP +The conversion specifier for +.I void * +for the +.BR printf (3) +and the +.BR scanf (3) +families of functions is +.BR p ; +resulting commonly in +.B %p +for printing +.I void * +values. +.PP +Conforming to: +C99 and later; POSIX.1-2001 and later. +.PP +See also the +.I intptr_t +and +.I uintptr_t +types in this page. +.RE .\"--------------------------------------------------------------------/ .SH NOTES The structures described in this manual page shall contain, -- 2.28.0
