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diff --git a/clang/test/Frontend/warning-mapping-1.c b/clang/test/Frontend/warning-mapping-1.c
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+// Check that -w has higher priority than -Werror.
+// RUN: %clang_cc1 -verify -Wsign-compare -Werror -w %s
+
+int f0(int x, unsigned y) {
+ return x < y;
+}