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-rw-r--r--clang/test/Driver/linker-opts.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/clang/test/Driver/linker-opts.c b/clang/test/Driver/linker-opts.c
index 24866a63b1f..29ef136c8b7 100644
--- a/clang/test/Driver/linker-opts.c
+++ b/clang/test/Driver/linker-opts.c
@@ -1,3 +1,6 @@
+// RUN: rm -rf %t
+// RUN: mkdir %t
+//
// RUN: env LIBRARY_PATH=%T/test1 %clang -x c %s -### 2>&1 | FileCheck %s
// CHECK: "-L{{.*}}/test1"
@@ -9,3 +12,12 @@
// Make sure that LIBRARY_PATH works for both i386 and x86_64 on Darwin.
// RUN: env LIBRARY_PATH=%T/test1 %clang -target x86_64-apple-darwin %s -### 2>&1 | FileCheck %s
// RUN: env LIBRARY_PATH=%T/test1 %clang -target i386-apple-darwin %s -### 2>&1 | FileCheck %s
+//
+// Make sure that we don't warn on unused compiler arguments.
+// RUN: %clang -Xclang -I. -x c %s -c -o %t/tmp.o
+// RUN: %clang -Xclang -I. %t/tmp.o -o %t/tmp -### 2>&1 | FileCheck %s --check-prefix=NO-UNUSED
+// NO-UNUSED-NOT: warning:{{.*}}unused
+//
+// Make sure that we do warn in other cases.
+// RUN: %clang %s -lfoo -c -o %t/tmp2.o -### 2>&1 | FileCheck %s --check-prefix=UNUSED
+// UNUSED: warning:{{.*}}unused
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