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-rw-r--r--gcc/system.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/system.h b/gcc/system.h
index dd72d07..a8b4fa9 100644
--- a/gcc/system.h
+++ b/gcc/system.h
@@ -800,7 +800,7 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
/* Front ends should never have to include middle-end headers. Enforce
this by poisoning the header double-include protection defines. */
#ifdef IN_GCC_FRONTEND
-#pragma GCC poison GCC_RTL_H GCC_EXCEPT_H
+#pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
#endif
/* Note: not all uses of the `index' token (e.g. variable names and