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

[Jake Egan via libcxx-commits]

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@@ -83,7 +81,11 @@ int main(int, char**)
 
             std::filebuf f;
             f.open(tmp.c_str(), mode);
+#  if defined(_AIX)
+            assert(!f.is_open());
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jakeegan wrote:

Should check for the warning with `// expected-warning`

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