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-rw-r--r--llvm/lib/Fuzzer/test/fuzzer-flags.test8
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Fuzzer/test/fuzzer-flags.test b/llvm/lib/Fuzzer/test/fuzzer-flags.test
new file mode 100644
index 00000000000..a94faf20a58
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/fuzzer-flags.test
@@ -0,0 +1,8 @@
+RUN: LLVMFuzzer-SimpleTest -foo_bar=1 2>&1 | FileCheck %s --check-prefix=FOO_BAR
+FOO_BAR: WARNING: unrecognized flag '-foo_bar=1'; use -help=1 to list all flags
+FOO_BAR: BINGO
+
+RUN: LLVMFuzzer-SimpleTest -runs=10 --max_len=100 2>&1 | FileCheck %s --check-prefix=DASH_DASH
+DASH_DASH: WARNING: did you mean '-max_len=100' (single dash)?
+DASH_DASH: INFO: A corpus is not provided, starting from an empty corpus
+
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