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-rw-r--r--tests/test/cpp/preprocessor2.scm16
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/test/cpp/preprocessor2.scm b/tests/test/cpp/preprocessor2.scm
index 4f0918ff..01c46dff 100644
--- a/tests/test/cpp/preprocessor2.scm
+++ b/tests/test/cpp/preprocessor2.scm
@@ -738,6 +738,22 @@ wf(x, y)
")))
+(test-equal "Usage before #define"
+ (lex "X")
+ (run "X
+
+#define X 100"))
+
+(test-equal "#undef"
+ (append (lex "X") (lex "10") (lex "X"))
+ (run "
+X
+#define X 10
+X
+#undef X
+X
+")
+ )
;; #undef
;; #error