[flang-commits] [flang] [flang] Add EXECUTE_COMMAND_LINE runtime and lowering intrinsics implementation (PR #74077)

[Yi Wu via flang-commits]

yi-wu-arm wrote:

On Linux, malloc is freed in parent, child process will be cleaned up on termination.
Windows: same as Linux, when a child process is terminated OS will free the allocated memory.
https://learn.microsoft.com/en-us/windows/win32/procthread/terminating-a-process `Any resources allocated by the process are freed.`

https://github.com/llvm/llvm-project/pull/74077