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-rw-r--r--clang/test/Preprocessor/macro_rescan.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/clang/test/Preprocessor/macro_rescan.c b/clang/test/Preprocessor/macro_rescan.c
new file mode 100644
index 0000000..3a38548
--- /dev/null
+++ b/clang/test/Preprocessor/macro_rescan.c
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -E %s | grep 'ei_1 = (17 +1);'
+// RUN: %clang_cc1 -E %s | grep 'ei_2 = (M1)(17);'
+
+#define M1(a) (a+1)
+#define M2(b) b
+
+int ei_1 = M2(M1)(17); /* becomes int ei_1 = (17+1); */
+int ei_2 = (M2(M1))(17); /* becomes int ei_2 = (M1)(17); */
+