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-rw-r--r--src/langext.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/langext.h b/src/langext.h
index 8d3ee6e..0a17cb2 100644
--- a/src/langext.h
+++ b/src/langext.h
@@ -26,8 +26,9 @@
#define assume(x) ((void)(__assume(x), 0))
#define cold __declspec(noinline)
#else
-#define unreachable ((void)(0)) // might still give some warnings, but too bad
-#define assume(x) ((void)0)
+static inline _Noreturn void _invoke_ub(void) {}
+#define unreachable (_invoke_ub())
+#define assume(x) ((void)(!!(x) || (_invoke_ub(), 0)))
#define cold
#endif
#endif