[msan] Intercept getloadavg.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@297923 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 0 deletions

diff --git a/test/msan/getloadavg.cc b/test/msan/getloadavg.cc
new file mode 100644
index 000000000..7facd580d
--- /dev/null
+++ b/test/msan/getloadavg.cc
@@ -0,0 +1,16 @@
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+
+#define _BSD_SOURCE
+#include <assert.h>
+#include <stdlib.h>
+
+#include <sanitizer/msan_interface.h>
+
+int main(void) {
+  double x[4];
+  int ret = getloadavg(x, 3);
+  assert(ret > 0);
+  assert(ret <= 3);
+  assert(__msan_test_shadow(x, sizeof(double) * ret) == -1);
+  assert(__msan_test_shadow(&x[ret], sizeof(double)) == 0);
+}