1 files changed, 81 insertions, 0 deletions
diff --git a/test/sanitizer_common/TestCases/Posix/setvbuf.cc b/test/sanitizer_common/TestCases/Posix/setvbuf.cc
new file mode 100644
index 000000000000..bc29ba45d89a
--- /dev/null
+++ b/test/sanitizer_common/TestCases/Posix/setvbuf.cc
@@ -0,0 +1,81 @@
+// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck %s
+
+// UNSUPPORTED: solaris
+
+#include <stdio.h>
+
+void print_something() {
+  for (size_t i = 0; i < 10 * BUFSIZ; i++)
+    printf("Hello world %zu\n", i);
+}
+
+void print_one_byte(char *buf) {
+  printf("First byte is %c\n", buf[0]);
+}
+
+void test_setbuf() {
+  char buf[BUFSIZ];
+
+  setbuf(stdout, NULL);
+
+  print_something();
+
+  setbuf(stdout, buf);
+
+  print_something();
+
+  print_one_byte(buf);
+}
+
+void test_setbuffer() {
+  char buf[BUFSIZ];
+
+  setbuffer(stdout, NULL, 0);
+
+  print_something();
+
+  setbuffer(stdout, buf, BUFSIZ);
+
+  print_something();
+
+  print_one_byte(buf);
+}
+
+void test_setlinebuf() {
+  setlinebuf(stdout);
+
+  print_something();
+}
+
+void test_setvbuf() {
+  char buf[BUFSIZ];
+
+  setvbuf(stdout, NULL, _IONBF, 0);
+
+  print_something();
+
+  setvbuf(stdout, buf, _IOLBF, BUFSIZ);
+
+  print_something();
+
+  print_one_byte(buf);
+
+  setvbuf(stdout, buf, _IOFBF, BUFSIZ);
+
+  print_something();
+
+  print_one_byte(buf);
+}
+
+int main(void) {
+  printf("setvbuf\n");
+
+  test_setbuf();
+  test_setbuffer();
+  test_setlinebuf();
+  test_setvbuf();
+
+  // CHECK: setvbuf
+
+  return 0;
+}