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-rw-r--r--clang/test/Preprocessor/pragma_poison.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/clang/test/Preprocessor/pragma_poison.c b/clang/test/Preprocessor/pragma_poison.c
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+++ b/clang/test/Preprocessor/pragma_poison.c
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+// RUN: %clang_cc1 %s -Eonly -verify
+
+#pragma GCC poison rindex
+rindex(some_string, 'h'); // expected-error {{attempt to use a poisoned identifier}}
+
+#define BAR _Pragma ("GCC poison XYZW") XYZW /*NO ERROR*/
+ XYZW // ok
+BAR
+ XYZW // expected-error {{attempt to use a poisoned identifier}}
+
+// Pragma poison shouldn't warn from macro expansions defined before the token
+// is poisoned.
+
+#define strrchr rindex2
+#pragma GCC poison rindex2
+
+// Can poison multiple times.
+#pragma GCC poison rindex2
+
+strrchr(some_string, 'h'); // ok.