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util/u_vector: prevent C++ warning on cast from void* to something else

Browse source 
v2: fix windows build

v3: duplicate foreach macro for C/C++

v4: Extract casting macro

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com> (v3)
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13997>
This commit is contained in:
Lionel Landwerlin 2021-11-28 21:33:36 +02:00 • committed by Marge Bot
parent 55b396e743
commit a3886fa471
1 changed files with 9 additions and 1 deletions
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10
src/util/u_vector.h
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@ -98,10 +98,18 @@ u_vector_finish(struct u_vector *queue)
free(queue->data);
}
#ifdef __cplusplus
#define u_vector_element_cast(elem) (decltype(elem))
#else
#define u_vector_element_cast(elem) (void *)
#endif
#define u_vector_foreach(elem, queue) \
STATIC_ASSERT(__builtin_types_compatible_p(__typeof__(queue), struct u_vector *)); \
for (uint32_t __u_vector_offset = (queue)->tail; \
elem = (void *)((char *)(queue)->data + (__u_vector_offset & ((queue)->size - 1))), __u_vector_offset != (queue)->head; \
elem = u_vector_element_cast(elem)((char *)(queue)->data + \
(__u_vector_offset & ((queue)->size - 1))), \
__u_vector_offset != (queue)->head; \
__u_vector_offset += (queue)->element_size)
#ifdef __cplusplus