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-rw-r--r--include/printf.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/printf.h b/include/printf.h
index d051514119..bdcfd29f63 100644
--- a/include/printf.h
+++ b/include/printf.h
@@ -1,5 +1,13 @@
#ifndef _PRINTF_H
+/* Workaround PR90731 with GCC 9 when using ldbl redirects in C++. */
+#include <bits/floatn.h>
+#if defined __cplusplus && __LONG_DOUBLE_USES_FLOAT128 == 1
+# if __GNUC_PREREQ (9, 0) && !__GNUC_PREREQ (9, 3)
+# pragma GCC system_header
+# endif
+#endif
+
#include <stdio-common/printf.h>
# ifndef _ISOMAC