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Diffstat (limited to 'gcc/testsuite/gcc.dg/cpp/cmdlne-dU-7.c')
-rw-r--r--gcc/testsuite/gcc.dg/cpp/cmdlne-dU-7.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/cmdlne-dU-7.c b/gcc/testsuite/gcc.dg/cpp/cmdlne-dU-7.c
new file mode 100644
index 00000000000..43a66341d0c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/cmdlne-dU-7.c
@@ -0,0 +1,8 @@
+/* { dg-do preprocess } */
+/* { dg-options "-P -dU" } */
+/* { dg-final { scan-file cmdlne-dU-7.i "^\n*B\n+#define A B\n+C\n+#define A C\n*$" } } */
+#define A B
+A
+#undef A
+#define A C
+A