1 files changed, 32 insertions, 0 deletions
diff --git a/compiler-rt/test/profile/ContinuousSyncMode/set-file-object.c b/compiler-rt/test/profile/ContinuousSyncMode/set-file-object.c
new file mode 100644
index 00000000000..ac3be3b5237
--- /dev/null
+++ b/compiler-rt/test/profile/ContinuousSyncMode/set-file-object.c
@@ -0,0 +1,32 @@
+// RUN: %clang_pgogen -o %t.exe %s
+// RUN: env LLVM_PROFILE_FILE="%c%t.profraw" %run %t.exe %t.bad 2>&1 | FileCheck %s
+
+// CHECK: __llvm_profile_set_file_object(fd={{[0-9]+}}) not supported
+// CHECK: Profile data not written to file: already written.
+
+#include <stdio.h>
+
+extern int __llvm_profile_is_continuous_mode_enabled(void);
+extern void __llvm_profile_set_file_object(FILE *, int);
+extern int __llvm_profile_write_file(void);
+
+int main(int argc, char **argv) {
+  if (!__llvm_profile_is_continuous_mode_enabled())
+    return 1;
+
+  FILE *f = fopen(argv[1], "a+b");
+  if (!f)
+    return 1;
+
+  __llvm_profile_set_file_object(f, 0); // Try to set the file to "%t.bad".
+
+  if (__llvm_profile_write_file() != 0)
+    return 1;
+
+  f = fopen(argv[1], "r");
+  if (!f)
+    return 1;
+
+  fseek(f, 0, SEEK_END);
+  return ftell(f); // Check that the "%t.bad" is empty.
+}