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-rw-r--r--perlvars.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/perlvars.h b/perlvars.h
index be67a59988..0f2e3475d3 100644
--- a/perlvars.h
+++ b/perlvars.h
@@ -99,9 +99,10 @@ PERLVARI(G, mmap_page_size, IV, 0)
#if defined(USE_ITHREADS)
PERLVAR(G, hints_mutex, perl_mutex) /* Mutex for refcounted he refcounting */
+#ifndef USE_THREAD_SAFE_LOCALE
PERLVAR(G, locale_mutex, perl_mutex) /* Mutex for setlocale() changing */
PERLVAR(G, lc_numeric_mutex, perl_mutex) /* Mutex for switching LC_NUMERIC */
-
+# endif
#endif
/* Proxy for HAS_POSIX_2008_LOCALE, since that is not defined in time for this */