Make a proper lvalue in INC

diff --git a/lib/libc/regex/regexec.c b/lib/libc/regex/regexec.c
index 82921b3..4933408 100644 (file)
--- a/lib/libc/regex/regexec.c
+++ b/lib/libc/regex/regexec.c
@@ -82,7 +82,7 @@ static int nope = 0;          /* for use in asserts; shuts lint up */
 #define        SETUP(v)        ((v) = 0)
 #define        onestate        long
 #define        INIT(o, n)      ((o) = (unsigned long)1 << (n))
-#define        INC(o)  ((unsigned long)(o) <<= 1)
+#define        INC(o)          ((o) = (unsigned long)(o) << 1)
 #define        ISSTATEIN(v, o) (((v) & (o)) != 0)
 /* some abbreviations; note that some of these know variable names! */
 /* do "if I'm here, I can also be there" etc without branches */