1 files changed, 30 insertions, 0 deletions
diff --git a/clang/test/Misc/diag-mapping.c b/clang/test/Misc/diag-mapping.c
new file mode 100644
index 0000000..75b49ef
--- /dev/null
+++ b/clang/test/Misc/diag-mapping.c
@@ -0,0 +1,30 @@
+// This should warn by default.
+// RUN: %clang_cc1 %s 2>&1 | grep "warning:"
+// This should not emit anything.
+// RUN: %clang_cc1 %s -Wno-extra-tokens 2>&1 | not grep diagnostic
+
+// -Werror can map all warnings to error.
+// RUN: %clang_cc1 %s -Werror 2>&1 | grep "error:"
+
+// -Werror can map this one warning to error.
+// RUN: %clang_cc1 %s -Werror=extra-tokens 2>&1 | grep "error:"
+
+// Mapping unrelated diags to errors doesn't affect this one.
+// RUN: %clang_cc1 %s -Werror=trigraphs 2>&1 | grep "warning:"
+
+// This should stay a warning with -pedantic.
+// RUN: %clang_cc1 %s -pedantic 2>&1 | grep "warning:"
+
+// This should emit an error with -pedantic-errors.
+// RUN: %clang_cc1 %s -pedantic-errors 2>&1 | grep "error:"
+
+// This should emit a warning, because -Wfoo overrides -pedantic*.
+// RUN: %clang_cc1 %s -pedantic-errors -Wextra-tokens 2>&1 | grep "warning:"
+
+// This should emit nothing, because -Wno-extra-tokens overrides -pedantic*
+// RUN: %clang_cc1 %s -pedantic-errors -Wno-extra-tokens 2>&1 | not grep diagnostic
+
+#ifdef foo
+#endif bad // extension!
+
+int x;