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-rw-r--r--src/test/ui/conditional-compilation/cfg-arg-invalid-3.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/test/ui/conditional-compilation/cfg-arg-invalid-3.rs b/src/test/ui/conditional-compilation/cfg-arg-invalid-3.rs
new file mode 100644
index 000000000..96ac7828c
--- /dev/null
+++ b/src/test/ui/conditional-compilation/cfg-arg-invalid-3.rs
@@ -0,0 +1,3 @@
+// compile-flags: --cfg a::b
+// error-pattern: invalid `--cfg` argument: `a::b` (argument key must be an identifier)
+fn main() {}