[llvm] [flang] [flang] GETPID runtime and lower intrinsic implementation (PR #70442)

[David Truby via llvm-commits]

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@@ -11,6 +11,13 @@
 
 #include "flang/Runtime/entry-names.h"
 
+#ifdef _WIN32
+// On Windows* OS GetCurrentProcessId returns int (not pid_t)
+typedef int64 pid_t;
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DavidTruby wrote:

Sorry, I just checked and the return type of GetCurrentProcessID is actually `DWORD` so it should be
`typedef DWORD pid_t;`
I think I got this wrong when I suggested the change so sorry about that!

https://github.com/llvm/llvm-project/pull/70442