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Range represents a range as follows. Member @start is the inclusive lower bound, member @end is the exclusive upper bound. Zero @end is special: if @start is also zero, the range is empty, else @end is to be interpreted as 2^64. No other empty ranges may occur. The range [0,2^64-1] cannot be represented. If you try to create it with range_set_bounds1(), you get the empty range instead. If you try to create it with range_set_bounds() or range_extend(), assertions fail. Before range_set_bounds() existed, the open-coded creation usually got you the empty range instead. Open deathtrap. Moreover, the code dealing with the janus-faced @end is too clever by half. Dumb this down to a more pedestrian representation: members @lob and @upb are inclusive lower and upper bounds. The empty range is encoded as @lob = 1, @upb = 0. Backports commit 6dd726a2bf1b800289d90a84d5fcb5ce7b78a8e1 from qemu |
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| .. | ||
| atomic.h | ||
| bitmap.h | ||
| bitops.h | ||
| bswap.h | ||
| compiler.h | ||
| crc32c.h | ||
| cutils.h | ||
| fprintf-fn.h | ||
| host-utils.h | ||
| int128.h | ||
| log.h | ||
| mmap-alloc.h | ||
| module.h | ||
| osdep.h | ||
| queue.h | ||
| range.h | ||
| thread-posix.h | ||
| thread-win32.h | ||
| thread.h | ||
| timer.h | ||
| typedefs.h | ||