From ff0d3a20659704a3762b0394844f42a89afbe246 Mon Sep 17 00:00:00 2001 From: Simon Marchi Date: Mon, 19 Aug 2019 21:51:52 -0400 Subject: [PATCH] Make bitfield.h C++-friendly This patch changes bitfield.h to be usable in C++11. It will probably never be compiled as C++ in the context of lttng-modules, but this is just to keep things sync'ed across projects. Signed-off-by: Simon Marchi Signed-off-by: Mathieu Desnoyers --- lib/bitfield.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/lib/bitfield.h b/lib/bitfield.h index a9e268b4..7d5eaeaa 100644 --- a/lib/bitfield.h +++ b/lib/bitfield.h @@ -55,8 +55,12 @@ * Produce a build-time error if the condition `cond` is non-zero. * Evaluates as a size_t expression. */ +#ifdef __cplusplus +#define _BT_BUILD_ASSERT(cond) ([]{static_assert((cond), "");}, 0) +#else #define _BT_BUILD_ASSERT(cond) \ sizeof(struct { int f:(2 * !!(cond) - 1); }) +#endif /* * Cast value `v` to an unsigned integer of the same size as `v`. @@ -362,7 +366,7 @@ do { \ do { \ __typeof__(*(vptr)) *_vptr = (vptr); \ __typeof__(*_vptr) _v; \ - type *_ptr = (void *) (ptr); \ + type *_ptr = (type *) (ptr); \ unsigned long _start = (start), _length = (length); \ type _mask, _cmask; \ unsigned long _ts = sizeof(type) * CHAR_BIT; /* type size */ \ -- 2.34.1