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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 974a1ebae85..1d570b0e98a 100644
--- a/gcc/cppinit.c
+++ b/gcc/cppinit.c
@@ -487,6 +487,7 @@ cpp_create_reader (lang)
set_lang (pfile, lang);
CPP_OPTION (pfile, warn_import) = 1;
+ CPP_OPTION (pfile, warn_multichar) = 1;
CPP_OPTION (pfile, discard_comments) = 1;
CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1;
CPP_OPTION (pfile, show_column) = 1;