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-rw-r--r--src/shell.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/shell.h b/src/shell.h
index 01c54d7..7034e29 100644
--- a/src/shell.h
+++ b/src/shell.h
@@ -96,5 +96,5 @@ extern char nullstr[1];		/* null string */
 #define __builtin_expect(x, expected_value) (x)
 #endif
 
-#define likely(x)	__builtin_expect((x),1)
-#define unlikely(x)	__builtin_expect((x),0)
+#define likely(x)	__builtin_expect(!!(x),1)
+#define unlikely(x)	__builtin_expect(!!(x),0)