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-rw-r--r--include/wchar.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/wchar.h b/include/wchar.h
index bb49d844be..4267985625 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -2,7 +2,7 @@
 
 /* Workaround PR90731 with GCC 9 when using ldbl redirects in C++.  */
 # include <bits/floatn.h>
-# if defined __cplusplus && __LONG_DOUBLE_USES_FLOAT128 == 1
+# if defined __cplusplus && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
 #  if __GNUC_PREREQ (9, 0) && !__GNUC_PREREQ (9, 3)
 #   pragma GCC system_header
 #  endif