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-rw-r--r--src/tail.c4
-rwxr-xr-xtests/tail-2/follow-stdin.sh12
2 files changed, 14 insertions, 2 deletions
diff --git a/src/tail.c b/src/tail.c
index 5c75be08d..6bf1e77d0 100644
--- a/src/tail.c
+++ b/src/tail.c
@@ -1940,8 +1940,6 @@ tail_file (struct File_spec *f, uintmax_t n_units)
ok = false;
f->errnum = -1;
f->tailable = false;
- f->ignore = ! (reopen_inaccessible_files
- && follow_mode == Follow_name);
error (0, 0, _("%s: cannot follow end of this type of file%s"),
quotef (pretty_name (f)),
f->ignore ? _("; giving up on this name") : "");
@@ -1949,6 +1947,8 @@ tail_file (struct File_spec *f, uintmax_t n_units)
if (!ok)
{
+ f->ignore = ! (reopen_inaccessible_files
+ && follow_mode == Follow_name);
close_fd (fd, pretty_name (f));
f->fd = -1;
}
diff --git a/tests/tail-2/follow-stdin.sh b/tests/tail-2/follow-stdin.sh
index a2f180428..3d51f6006 100755
--- a/tests/tail-2/follow-stdin.sh
+++ b/tests/tail-2/follow-stdin.sh
@@ -50,4 +50,16 @@ for mode in '' '---disable-inotify'; do
cleanup_
done
+
+# Before coreutils-8.26 this would induce an UMR under UBSAN
+returns_ 1 timeout 10 tail -f - <&- 2>err || fail=1
+cat <<\EOF >exp || framework_failure_
+tail: cannot fstat 'standard input': Bad file descriptor
+tail: error reading 'standard input': Bad file descriptor
+tail: no files remaining
+tail: -: Bad file descriptor
+EOF
+compare exp err || fail=1
+
+
Exit $fail