Man page - zt_null(3)
Packages contains this manual
- zt_pack_boolean(3)
- zt_claim(3)
- zt_location_at(3)
- zt_test(3)
- zt_test_suite_func(3)
- zt_pack_integer(3)
- zt_pack_nothing(3)
- zt_location(3)
- libzt(3)
- zt_test_case_func(3)
- zt_main(3)
- zt_pack_pointer(3)
- zt_value(3)
- zt_visit_test_case(3)
- zt_pack_string(3)
- zt_visitor(3)
- zt_check(3)
- zt_pack_unsigned(3)
- zt_pack_rune(3)
apt-get install libzt-doc
Manual
UNTITLED () LOCAL UNTITLED ()
NAME
ZT_NULL, zt_null — construct a claim that a pointer is NULL
SYNOPSIS
#include <zt.h>
#define
ZT_NULL(value) \
zt_null( \
ZT_CURRENT_LOCATION(), \
zt_pack_pointer((value), #value))
zt_claim
zt_null ( zt_location location , zt_value value );
DESCRIPTION
zt_null () constructs a claim that a given pointer is NULL. It should be used through the macro ZT_NULL (), which passes source code location and packs argument.
ZT_NULL () can be useful, when coupled with zt_assert (), to ensure that something that the reminder of the test relies on did not happen, for example that no error had occurred.
IMPLEMENTATION NOTES
ZT_NULL () evaluates value only once.
RETURN VALUES
Both the macro and the function return a zt_claim structure with the appropriate attributes set. The returned claim is usually passed to zt_check () or to zt_assert ().
SEE ALSO
zt_assert (3), zt_check (3), zt_claim (3), ZT_CMP_BOOL (3), ZT_CMP_RUNE (3), ZT_CMP_CSTR (3), ZT_CMP_INT (3), ZT_CMP_PTR (3), ZT_CMP_UINT (3), ZT_FALSE (3), ZT_NOT_NULL (3), ZT_NULL (3) zt_value (3),
HISTORY
The ZT_NULL () macro and the zt_null () function first appeared in libzt 0.1
AUTHORS
Zygmunt Krynicki < me@zygoon.pl > libzt 0.3.1 January 12, 2020 ZT_NULL (3)