[libcxx-commits] [libcxx] [AIX][libc++] fopen() does not support the 'x' (exclusive/noreplace) mode suffix. (PR #206498)

[Nikolas Klauser via libcxx-commits]

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@@ -82,8 +80,13 @@ int main(int, char**)
             std::remove(tmp.c_str());
 
             std::filebuf f;
+            // expected-warning at +1 {{fstream::open() with noreplace is not supported on AIX; open() will return failure}}
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philnik777 wrote:

This doesn't test anything. It needs to be in a `.verify.cpp` test.

https://github.com/llvm/llvm-project/pull/206498