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-rw-r--r--src/test/ui/extern-flag/empty-extern-arg.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/test/ui/extern-flag/empty-extern-arg.rs b/src/test/ui/extern-flag/empty-extern-arg.rs
new file mode 100644
index 00000000000..d3cb5aaaeba
--- /dev/null
+++ b/src/test/ui/extern-flag/empty-extern-arg.rs
@@ -0,0 +1,4 @@
+// compile-flags: --extern std=
+// error-pattern: extern location for std does not exist
+
+fn main() {}