diff options
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/utils/assert.h | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/src/lib/utils/assert.h b/src/lib/utils/assert.h index c49ae62ee..ab459464e 100644 --- a/src/lib/utils/assert.h +++ b/src/lib/utils/assert.h @@ -1,6 +1,7 @@ /* * Runtime assertion checking * (C) 2010 Jack Lloyd +* 2017 Simon Warta (Kullo GmbH) * * Botan is released under the Simplified BSD License (see license.txt) */ @@ -87,9 +88,32 @@ BOTAN_NORETURN void BOTAN_DLL assertion_failure(const char* expr_str, } while(0) /** -* Mark variable as unused +* Mark variable as unused. Takes between 1 and 9 arguments and marks all as unused, +* e.g. BOTAN_UNUSED(a); or BOTAN_UNUSED(x, y, z); */ -#define BOTAN_UNUSED(v) static_cast<void>(v) +#define _BOTAN_UNUSED_IMPL1(a) static_cast<void>(a) +#define _BOTAN_UNUSED_IMPL2(a, b) static_cast<void>(a); _BOTAN_UNUSED_IMPL1(b) +#define _BOTAN_UNUSED_IMPL3(a, b, c) static_cast<void>(a); _BOTAN_UNUSED_IMPL2(b, c) +#define _BOTAN_UNUSED_IMPL4(a, b, c, d) static_cast<void>(a); _BOTAN_UNUSED_IMPL3(b, c, d) +#define _BOTAN_UNUSED_IMPL5(a, b, c, d, e) static_cast<void>(a); _BOTAN_UNUSED_IMPL4(b, c, d, e) +#define _BOTAN_UNUSED_IMPL6(a, b, c, d, e, f) static_cast<void>(a); _BOTAN_UNUSED_IMPL5(b, c, d, e, f) +#define _BOTAN_UNUSED_IMPL7(a, b, c, d, e, f, g) static_cast<void>(a); _BOTAN_UNUSED_IMPL6(b, c, d, e, f, g) +#define _BOTAN_UNUSED_IMPL8(a, b, c, d, e, f, g, h) static_cast<void>(a); _BOTAN_UNUSED_IMPL7(b, c, d, e, f, g, h) +#define _BOTAN_UNUSED_IMPL9(a, b, c, d, e, f, g, h, i) static_cast<void>(a); _BOTAN_UNUSED_IMPL8(b, c, d, e, f, g, h, i) +#define _BOTAN_UNUSED_GET_IMPL(_1, _2, _3, _4, _5, _6, _7, _8, _9, IMPL_NAME, ...) IMPL_NAME + +#define BOTAN_UNUSED(...) _BOTAN_UNUSED_GET_IMPL(__VA_ARGS__, \ + _BOTAN_UNUSED_IMPL9, \ + _BOTAN_UNUSED_IMPL8, \ + _BOTAN_UNUSED_IMPL7, \ + _BOTAN_UNUSED_IMPL6, \ + _BOTAN_UNUSED_IMPL5, \ + _BOTAN_UNUSED_IMPL4, \ + _BOTAN_UNUSED_IMPL3, \ + _BOTAN_UNUSED_IMPL2, \ + _BOTAN_UNUSED_IMPL1, \ + unused dummy rest value \ + ) /* we got an one of _BOTAN_UNUSED_IMPL*, now call it */ (__VA_ARGS__) } |