[flang-commits] [PATCH] D134399: [flang][NFC] Document non-extension (user ELEMENTAL procedures as actual arguments)

[Peter Klausler via Phabricator via flang-commits]

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Some Fortran compilers accept user-defined ELEMENTAL procedures as actual
arguments corresponding to (necessarily) non-ELEMENTAL dummy procedures;
most do not, and f18 is one of them.  Document the fact that this is not
a supported extension.


https://reviews.llvm.org/D134399

Files:
  flang/docs/Extensions.md


Index: flang/docs/Extensions.md
===================================================================
--- flang/docs/Extensions.md
+++ flang/docs/Extensions.md
@@ -314,6 +314,9 @@
 * VMS listing control directives (`%LIST`, `%NOLIST`, `%EJECT`)
 * Continuation lines on `INCLUDE` lines
 * `NULL()` actual argument corresponding to an `ALLOCATABLE` dummy data object
+* User (non-intrinsic) `ELEMENTAL` procedures may not be passed as actual
+  arguments, in accordance with the standard; some Fortran compilers
+  permit such usage.
 
 ## Preprocessing behavior
 


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