[flang-commits] [flang] [Flang] Implement RENAME intrinsic (code-gen + runtime entry point) (PR #98359)

[Slava Zakharin via flang-commits]

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@@ -55,6 +56,36 @@ static RT_API_ATTRS void TransferImpl(Descriptor &result,
 extern "C" {
 RT_EXT_API_GROUP_BEGIN
 
+void RTDECL(Rename)(const Descriptor &path1, const Descriptor &path2,
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vzakhari wrote:

`RTDECL` -> `RTDEF`

I suggest using `#if !defined(RT_DEVICE_COMPILATION)` to guard the body of the function, as long as the device runtimes do not provide POSIX `rename`.  I would also suggest issuing an `unsupported` crash message in the else clause of the check.

https://github.com/llvm/llvm-project/pull/98359