1 files changed, 78 insertions, 0 deletions
diff --git a/lib/msan/lit_tests/Linux/glob_altdirfunc.cc b/lib/msan/lit_tests/Linux/glob_altdirfunc.cc
new file mode 100644
index 0000000000000..b8200c3ee8996
--- /dev/null
+++ b/lib/msan/lit_tests/Linux/glob_altdirfunc.cc
@@ -0,0 +1,78 @@
+// RUN: %clangxx_msan -m64 -O0 %s -o %t && %t %p 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %t %p 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -m64 -O3 %s -o %t && %t %p 2>&1 | FileCheck %s
+
+#include <assert.h>
+#include <glob.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <unistd.h>
+
+#include <sanitizer/msan_interface.h>
+
+static void my_gl_closedir(void *dir) {
+  if (!dir)
+    exit(1);
+  closedir((DIR *)dir);
+}
+
+static struct dirent *my_gl_readdir(void *dir) {
+  if (!dir)
+    exit(1);
+  struct dirent *d = readdir((DIR *)dir);
+  if (d) __msan_poison(d, d->d_reclen); // hehe
+  return d;
+}
+
+static void *my_gl_opendir(const char *s) {
+  assert(__msan_test_shadow(s, strlen(s) + 1) == (size_t)-1);
+  return opendir(s);
+}
+
+static int my_gl_lstat(const char *s, struct stat *st) {
+  assert(__msan_test_shadow(s, strlen(s) + 1) == (size_t)-1);
+  if (!st)
+    exit(1);
+  return lstat(s, st);
+}
+
+static int my_gl_stat(const char *s, struct stat *st) {
+  assert(__msan_test_shadow(s, strlen(s) + 1) == (size_t)-1);
+  if (!st)
+    exit(1);
+  return lstat(s, st);
+}
+
+int main(int argc, char *argv[]) {
+  assert(argc == 2);
+  char buf[1024];
+  snprintf(buf, sizeof(buf), "%s/%s", argv[1], "glob_test_root/*a");
+
+  glob_t globbuf;
+  globbuf.gl_closedir = my_gl_closedir;
+  globbuf.gl_readdir = my_gl_readdir;
+  globbuf.gl_opendir = my_gl_opendir;
+  globbuf.gl_lstat = my_gl_lstat;
+  globbuf.gl_stat = my_gl_stat;
+  for (int i = 0; i < 10000; ++i) {
+    int res = glob(buf, GLOB_ALTDIRFUNC | GLOB_MARK, 0, &globbuf);
+    assert(res == 0);
+    printf("%d %s\n", errno, strerror(errno));
+    assert(globbuf.gl_pathc == 2);
+    printf("%zu\n", strlen(globbuf.gl_pathv[0]));
+    printf("%zu\n", strlen(globbuf.gl_pathv[1]));
+    __msan_poison(globbuf.gl_pathv[0], strlen(globbuf.gl_pathv[0]) + 1);
+    __msan_poison(globbuf.gl_pathv[1], strlen(globbuf.gl_pathv[1]) + 1);
+    globfree(&globbuf);
+  }
+
+  printf("PASS\n");
+  // CHECK: PASS
+  return 0;
+}