No locales in test-in-container?

[Florian Weimer <fweimer at redhat dot com>]

I'm doing this:

diff --git a/libio/Makefile b/libio/Makefile
index 6e594b8ec5..3a4fb2f10e 100644
--- a/libio/Makefile
+++ b/libio/Makefile
@@ -68,9 +68,9 @@ tests = tst_swprintf tst_wprintf tst_swscanf tst_wscanf tst_getwc tst_putwc   \
 	tst-sprintf-ub tst-sprintf-chk-ub tst-bz24051 tst-bz24153 \
 	tst-wfile-sync tst-wfile-gconv
 
-# This test tests interaction with the gconv cache.  Setting
-# GCONV_CACHE during out-of-container testing disables the cache.
-tests-container += tst-wfile-ascii
+# These tests interact with the gconv cache.  Setting GCONV_CACHE
+# during out-of-container testing disables the cache.
+tests-container += tst-wfile-ascii tst-wfile-fclose-exit
 
 tests-internal = tst-vtables tst-vtables-interposed tst-readline
 
@@ -230,6 +230,7 @@ $(objpfx)tst-widetext.out: $(gen-locales)
 $(objpfx)tst_wprintf2.out: $(gen-locales)
 $(objpfx)tst-wfile-sync.out: $(gen-locales)
 $(objpfx)tst-wfile-gconv.out: $(gen-locales)
+$(objpfx)tst-wfile-fclose-exit.out: $(gen-locales)
 endif
 
 $(objpfx)test-freopen.out: test-freopen.sh $(objpfx)test-freopen

And have this locale call:

  if (setlocale (LC_ALL, "en_US.UTF-8") == NULL)
    FAIL_EXIT1 ("setlocale: %m");

But this results in this failure:

error: tst-wfile-fclose-exit.c:45: setlocale: No such file or directory

This also happens with a clean build.  Apparently, there are no locales
in testroot.pristine.  Is this expected?

Thanks,
Florian