1 files changed, 24 insertions, 0 deletions
diff --git a/clang/test/Preprocessor/embed_parameter_if_empty.c b/clang/test/Preprocessor/embed_parameter_if_empty.c
new file mode 100644
index 000000000000..70f1bc6a28be
--- /dev/null
+++ b/clang/test/Preprocessor/embed_parameter_if_empty.c
@@ -0,0 +1,24 @@
+// RUN: %clang_cc1 -std=c23 %s --embed-dir=%S/Inputs -fsyntax-only -verify
+
+const char data[] = {
+#embed <media/empty> if_empty(123, 124, 125)
+};
+const char non_empty_data[] = {
+#embed <jk.txt> if_empty(123, 124, 125)
+};
+static_assert(sizeof(data) == 3);
+static_assert(123 == data[0]);
+static_assert(124 == data[1]);
+static_assert(125 == data[2]);
+static_assert(sizeof(non_empty_data) == 2);
+static_assert('j' == non_empty_data[0]);
+static_assert('k' == non_empty_data[1]);
+
+// Ensure we diagnose duplicate parameters even if they're the same value.
+const unsigned char a[] = {
+#embed <jk.txt> if_empty(1) prefix() if_empty(2)
+// expected-error@-1 {{cannot specify parameter 'if_empty' twice in the same '#embed' directive}}
+,
+#embed <jk.txt> if_empty(1) suffix() if_empty(2)
+// expected-error@-1 {{cannot specify parameter 'if_empty' twice in the same '#embed' directive}}
+};