[flang-commits] [flang] b918498 - [flang][NFC] Document non-extension (user ELEMENTAL procedures as actual arguments)

[Peter Klausler via flang-commits]

Author: Peter Klausler
Date: 2022-09-23T10:57:04-07:00
New Revision: b918498193276be7a142a12d4a02d1d2da8e60d9

URL: https://github.com/llvm/llvm-project/commit/b918498193276be7a142a12d4a02d1d2da8e60d9
DIFF: https://github.com/llvm/llvm-project/commit/b918498193276be7a142a12d4a02d1d2da8e60d9.diff

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

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.

Differential Revision: https://reviews.llvm.org/D134399

Added: 
    

Modified: 
    flang/docs/Extensions.md

Removed: 
    


################################################################################
diff  --git a/flang/docs/Extensions.md b/flang/docs/Extensions.md
index 45eea70297f68..09b56080832df 100644
--- a/flang/docs/Extensions.md
+++ b/flang/docs/Extensions.md
@@ -314,6 +314,9 @@ end
 * 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