Build failure with v4.9-rc1 and GCC trunk -- compiler weirdness
From: peterz@infradead.org (Peter Zijlstra)
Date: 2017-02-02 09:02:39
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On Wed, Feb 01, 2017 at 11:04:54AM -0800, Joe Perches wrote:
quoted
+#define order_base_2(n) \ +( \ + __builtin_constant_p(n) ? ( \ + ((n) < 2) ? (n) : \ + ilog2((n) - 1) + 1) : \ + __order_base_2(n) \ + )Does this work properly when n is a signed negative value?
Do you see it returning a complex number?