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-rw-r--r--gcc/cppinit.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/cppinit.c b/gcc/cppinit.c
index ed91b0e..a6da0b6 100644
--- a/gcc/cppinit.c
+++ b/gcc/cppinit.c
@@ -147,6 +147,7 @@ cpp_create_reader (enum c_lang lang, hash_table *table,
CPP_OPTION (pfile, warn_long_long) = !CPP_OPTION (pfile, c99);
CPP_OPTION (pfile, dollars_in_ident) = 1;
CPP_OPTION (pfile, warn_dollars) = 1;
+ CPP_OPTION (pfile, warn_variadic_macros) = 1;
/* Default CPP arithmetic to something sensible for the host for the
benefit of dumb users like fix-header. */