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-rw-r--r--clang/lib/Lex/PPMacroExpansion.cpp1
-rw-r--r--clang/test/SemaObjC/unused.m10
2 files changed, 10 insertions, 1 deletions
diff --git a/clang/lib/Lex/PPMacroExpansion.cpp b/clang/lib/Lex/PPMacroExpansion.cpp
index d60cf0804f5..5fe2ef172e2 100644
--- a/clang/lib/Lex/PPMacroExpansion.cpp
+++ b/clang/lib/Lex/PPMacroExpansion.cpp
@@ -505,6 +505,7 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) {
.Case("attribute_cf_returns_retained", true)
.Case("attribute_ns_returns_not_retained", true)
.Case("attribute_ns_returns_retained", true)
+ .Case("attribute_objc_ivar_unused", true)
.Default(false);
}
diff --git a/clang/test/SemaObjC/unused.m b/clang/test/SemaObjC/unused.m
index e99418875ae..a33a1bc02f9 100644
--- a/clang/test/SemaObjC/unused.m
+++ b/clang/test/SemaObjC/unused.m
@@ -39,7 +39,15 @@ void test2() {
// instance variables, which GCC does not.
//===------------------------------------------------------------------------===
+#if __has_feature(attribute_objc_ivar_unused)
+#define UNUSED_IVAR __attribute__((unused))
+#else
+#error __attribute__((unused)) not supported on ivars
+#endif
+
@interface TestUnusedIvar {
- id x __attribute__((unused)); // no-warning
+ id y __attribute__((unused)); // no-warning
+ id x UNUSED_IVAR; // no-warning
}
@end
+
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