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D33674.diff
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diff --git a/sys/compat/linuxkpi/common/include/linux/kernel.h b/sys/compat/linuxkpi/common/include/linux/kernel.h
--- a/sys/compat/linuxkpi/common/include/linux/kernel.h
+++ b/sys/compat/linuxkpi/common/include/linux/kernel.h
@@ -109,9 +109,7 @@
#define BUILD_BUG_ON_MSG(x, msg) BUILD_BUG_ON(x)
#define BUILD_BUG_ON_NOT_POWER_OF_2(x) BUILD_BUG_ON(!powerof2(x))
#define BUILD_BUG_ON_INVALID(expr) while (0) { (void)(expr); }
-
-extern const volatile int lkpi_build_bug_on_zero;
-#define BUILD_BUG_ON_ZERO(x) ((x) ? lkpi_build_bug_on_zero : 0)
+#define BUILD_BUG_ON_ZERO(x) ((int)sizeof(struct { int:-((x) != 0); }))
#define BUG() panic("BUG at %s:%d", __FILE__, __LINE__)
#define BUG_ON(cond) do { \
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D33674.diff (714 B)
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D33674: LinuxKPI: Use negative bit field size to trigger BUILD_BUG_ON_ZERO
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