[llvm] [llvm-objcopy] Check for missing argument values (PR #70710)

[James Henderson via llvm-commits]

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@@ -0,0 +1,4 @@
+## An error must be reported if a required argument value is missing.
+# RUN: not llvm-objcopy --only-section 2>&1 | FileCheck --check-prefix=CHECK-NO-VALUE %s
+# RUN: not llvm-objcopy -O 2>&1 | FileCheck --check-prefix=CHECK-NO-VALUE %s
+# CHECK-NO-VALUE: error: argument to '{{.*}}' is missing
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jh7370 wrote:

Why are you using a wildcard pattern here? It seems sensible to properly check the message generated. This also is only testing part of the message, but there are other parts that are important too.

https://github.com/llvm/llvm-project/pull/70710