1 files changed, 50 insertions, 0 deletions
diff --git a/test/msan/ifaddrs.cc b/test/msan/ifaddrs.cc
new file mode 100644
index 000000000000..6a0db3a5b71f
--- /dev/null
+++ b/test/msan/ifaddrs.cc
@@ -0,0 +1,50 @@
+// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p 2>&1
+
+#include <assert.h>
+#include <errno.h>
+#include <ifaddrs.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <vector>
+
+#include <sanitizer/msan_interface.h>
+
+#define CHECK_AND_PUSH(addr, size)                                \
+  if (addr) {                                                     \
+    assert(-1 == __msan_test_shadow(addr, sizeof(size)));         \
+    ranges.push_back(std::make_pair((void *)addr, (size_t)size)); \
+  }
+
+int main(int argc, char *argv[]) {
+  struct ifaddrs *ifas;
+
+  assert(0 == __msan_test_shadow(&ifas, sizeof(ifaddrs *)));
+  int res = getifaddrs(&ifas);
+  if (res == -1) {
+    assert(errno == ENOSYS);
+    printf("getifaddrs() is not implemented\n");
+    return 0;
+  }
+  assert(res == 0);
+  assert(-1 == __msan_test_shadow(&ifas, sizeof(ifaddrs *)));
+
+  std::vector<std::pair<void *, size_t> > ranges;
+  ifaddrs *p = ifas;
+  while (p) {
+    CHECK_AND_PUSH(p, sizeof(ifaddrs));
+    CHECK_AND_PUSH(p->ifa_name, strlen(p->ifa_name) + 1);
+    CHECK_AND_PUSH(p->ifa_addr, sizeof(*p->ifa_addr));
+    CHECK_AND_PUSH(p->ifa_netmask, sizeof(*p->ifa_netmask));
+    CHECK_AND_PUSH(p->ifa_broadaddr, sizeof(*p->ifa_broadaddr));
+    CHECK_AND_PUSH(p->ifa_dstaddr, sizeof(*p->ifa_dstaddr));
+    p = p->ifa_next;
+  }
+
+  freeifaddrs(ifas);
+  for (int i = 0; i < ranges.size(); i++)
+    assert(0 == __msan_test_shadow(ranges[i].first, ranges[i].second));
+  return 0;
+}