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-rw-r--r--test/LLVMC/ExternOptions.td3
1 files changed, 2 insertions, 1 deletions
diff --git a/test/LLVMC/ExternOptions.td b/test/LLVMC/ExternOptions.td
index 11383cb15b..a04a88b002 100644
--- a/test/LLVMC/ExternOptions.td
+++ b/test/LLVMC/ExternOptions.td
@@ -1,6 +1,7 @@
// Check that extern options work.
// The dummy tool and graph are required to silence warnings.
-// RUN: tblgen -I $srcroot/include --gen-llvmc %s | grep {extern .* AutoGeneratedSwitch_Wall}
+// RUN: tblgen -I $srcroot/include --gen-llvmc %s -o %t
+// RUN: grep {extern .* AutoGeneratedSwitch_Wall} %t
include "llvm/CompilerDriver/Common.td"