Ensure we initialize stdin/stdout/stderr's recursive mutexes.
(cherry-pick of 6a03abcfd23f31d1df06eb0059830e22621282bb.)
Bug: 18208568
Change-Id: I9da16ce0f9375bc363d1d02be706d73fd3b1e150
diff --git a/tests/stdio_test.cpp b/tests/stdio_test.cpp
index 8c8c235..6a2991f 100644
--- a/tests/stdio_test.cpp
+++ b/tests/stdio_test.cpp
@@ -29,6 +29,23 @@
#include "TemporaryFile.h"
+TEST(stdio, flockfile_18208568_stderr) {
+ // Check that we have a _recursive_ mutex for flockfile.
+ flockfile(stderr);
+ feof(stderr); // We don't care about the result, but this needs to take the lock.
+ funlockfile(stderr);
+}
+
+TEST(stdio, flockfile_18208568_regular) {
+ // We never had a bug for streams other than stdin/stdout/stderr, but test anyway.
+ FILE* fp = fopen("/dev/null", "w");
+ ASSERT_TRUE(fp != NULL);
+ flockfile(fp);
+ feof(fp);
+ funlockfile(fp);
+ fclose(fp);
+}
+
TEST(stdio, tmpfile_fileno_fprintf_rewind_fgets) {
FILE* fp = tmpfile();
ASSERT_TRUE(fp != NULL);