1 files changed, 6 insertions, 3 deletions
diff --git a/test/pp.h b/test/pp.h
index e914800..5ac7aac 100644
--- a/test/pp.h
+++ b/test/pp.h
@@ -1,18 +1,21 @@
 #ifndef GUARD
 #define GUARD
 
+extern int printf(const char *, ...);
 extern warnhere();
 #define Foo 9
 void hi(int x) {
-   extern int printf(const char *, ...);
    printf("hi from header ;%d\n", x);
 }
 #if 1
 #endif
 #elifndef Ww
 #define Bar 7
-#define SQR_(x) (x)*(x)
-#define SQR(y) SQR_(y)
+#define SQR_(x) ((x)*(x))
+#define SQR(y) SQR_(1+(y)-1)
 #define ADD(a,b) (a)+(b)
+#define STR(h) #h 
 
 #endif
+
+extern int printf(const char *, ...);