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-rw-r--r--io/Makefile3
-rw-r--r--io/test-stat.c49
2 files changed, 51 insertions, 1 deletions
diff --git a/io/Makefile b/io/Makefile
index 5d7c4c864e..f1ff7970cd 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -55,13 +55,14 @@ static-only-routines = stat fstat lstat mknod stat64 fstat64 lstat64
 
 others		:= pwd
 test-srcs	:= ftwtest
-tests		:= test-utime
+tests		:= test-utime test-stat
 
 distribute	:= ftwtest-sh
 
 include ../Rules
 
 CFLAGS-fts.c = -Wno-uninitialized
+CFLAGS-test-stat.c = -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
 
 ifeq ($(cross-compiling),no)
 tests: $(objpfx)ftwtest
diff --git a/io/test-stat.c b/io/test-stat.c
new file mode 100644
index 0000000000..dc2e2dd60e
--- /dev/null
+++ b/io/test-stat.c
@@ -0,0 +1,49 @@
+/* We need to define:
+#define _FILE_OFFSET_BITS 64
+#define _LARGEFILE64_SOURCE 1
+*/
+
+#include <assert.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+int
+main (void)
+{
+  /* With _FILE_OFFSET_BITS=64 struct stat and struct stat64 should
+     be identical.  */
+  assert (sizeof (struct stat)
+	  == sizeof (struct stat64));
+  assert (offsetof (struct stat, st_dev)
+	  == offsetof (struct stat64, st_dev));
+  assert (offsetof (struct stat, st_ino)
+	  == offsetof (struct stat64, st_ino));
+  assert (offsetof (struct stat, st_mode)
+	  == offsetof (struct stat64, st_mode));
+  assert (offsetof (struct stat, st_nlink)
+	  == offsetof (struct stat64, st_nlink));
+  assert (offsetof (struct stat, st_uid)
+	  == offsetof (struct stat64, st_uid));
+  assert (offsetof (struct stat, st_gid)
+	  == offsetof (struct stat64, st_gid));
+  assert (offsetof (struct stat, st_rdev)
+	  == offsetof (struct stat64, st_rdev));
+  assert (offsetof (struct stat, st_size)
+	  == offsetof (struct stat64, st_size));
+  assert (offsetof (struct stat, st_atime)
+	  == offsetof (struct stat64, st_atime));
+  assert (offsetof (struct stat, st_mtime)
+	  == offsetof (struct stat64, st_mtime));
+  assert (offsetof (struct stat, st_ctime)
+	  == offsetof (struct stat64, st_ctime));
+  assert (offsetof (struct stat, st_blksize)
+	  == offsetof (struct stat64, st_blksize));
+  assert (offsetof (struct stat, st_blocks)
+	  == offsetof (struct stat64, st_blocks));
+#if 0
+  /* Some systems have st_fstype but not all.  Don't check it for now.  */
+  assert (offsetof (struct stat, st_fstype)
+	  == offsetof (struct stat64, st_fstype));
+#endif
+  return 0;
+}