[flang-commits] [flang] [Flang] Allow reference of a function that returns a procedure pointer to be an actual argument corresponding to a procedure pointer dummy. (PR #82824)

[Peter Klausler via flang-commits]

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@@ -87,8 +87,7 @@ subroutine test1 ! 15.5.2.9(5)
     call s02(p) ! ok
     !ERROR: Actual procedure argument has interface incompatible with dummy argument 'p=': function results have distinct types: REAL(4) vs INTEGER(4)
     call s02(ip)
-    !ERROR: Actual argument associated with procedure pointer dummy argument 'p=' must be a pointer unless INTENT(IN)
-    call s02(procptr())
+    call s02(procptr()) ! ok
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klausler wrote:

There are NAG tests for this that would fail.

I don't see how an extension is justified here.  If an application cannot use `INTENT(IN)`, then it's expecting to be passed a modifiable procedure pointer, and a function result should indeed be an error.  If an application can use `INTENT(IN)`, then it should do so and avoid the issue.

https://github.com/llvm/llvm-project/pull/82824