1 files changed, 28 insertions, 0 deletions
diff --git a/test/Profile/c-outdated-data.c b/test/Profile/c-outdated-data.c
new file mode 100644
index 0000000..d0503ac
--- /dev/null
+++ b/test/Profile/c-outdated-data.c
@@ -0,0 +1,28 @@
+// Test that outdated data is ignored.
+
+// FIXME: It would be nice to use -verify here instead of FileCheck, but -verify
+// doesn't play well with warnings that have no line number.
+
+// RUN: llvm-profdata merge %S/Inputs/c-outdated-data.proftext -o %t.profdata
+// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -fprofile-instr-use=%t.profdata -Wprofile-instr-dropped 2>&1 | FileCheck %s
+// CHECK: warning: profile data may be out of date: of 3 functions, 1 has no data and 1 has mismatched data that will be ignored
+
+void no_usable_data() {
+  int i = 0;
+
+  if (i) {}
+
+#ifdef GENERATE_OUTDATED_DATA
+  if (i) {}
+#endif
+}
+
+#ifndef GENERATE_OUTDATED_DATA
+void no_data() {
+}
+#endif
+
+int main(int argc, const char *argv[]) {
+  no_usable_data();
+  return 0;
+}