[flang-commits] [PATCH] D139127: [flang] Document and warn about an extension
Peter Klausler via Phabricator via flang-commits
flang-commits at lists.llvm.org
Sat Dec 3 11:10:17 PST 2022
This revision was automatically updated to reflect the committed changes.
Closed by commit rGfee041f69de0: [flang] Document and warn about an extension (authored by klausler).
Changed prior to commit:
https://reviews.llvm.org/D139127?vs=479346&id=479854#toc
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D139127/new/
https://reviews.llvm.org/D139127
Files:
flang/docs/Extensions.md
flang/lib/Semantics/check-call.cpp
flang/lib/Semantics/pointer-assignment.cpp
flang/test/Semantics/bindings03.f90
Index: flang/test/Semantics/bindings03.f90
===================================================================
--- /dev/null
+++ flang/test/Semantics/bindings03.f90
@@ -0,0 +1,26 @@
+! RUN: %python %S/test_errors.py %s %flang_fc1 -Werror
+! Confirm a portability warning on use of a procedure binding apart from a call
+module m
+ type t
+ contains
+ procedure :: sub
+ end type
+ contains
+ subroutine sub(x)
+ class(t), intent(in) :: x
+ end subroutine
+end module
+
+program test
+ use m
+ procedure(sub), pointer :: p
+ type(t) x
+ !PORTABILITY: Procedure binding 'sub' used as target of a pointer assignment
+ p => x%sub
+ !PORTABILITY: Procedure binding 'sub' passed as an actual argument
+ call sub2(x%sub)
+ contains
+ subroutine sub2(s)
+ procedure(sub) s
+ end subroutine
+end
Index: flang/lib/Semantics/pointer-assignment.cpp
===================================================================
--- flang/lib/Semantics/pointer-assignment.cpp
+++ flang/lib/Semantics/pointer-assignment.cpp
@@ -307,6 +307,10 @@
symbol->name());
return false;
}
+ } else if (symbol->has<ProcBindingDetails>()) {
+ evaluate::SayWithDeclaration(context_.messages(), *symbol,
+ "Procedure binding '%s' used as target of a pointer assignment"_port_en_US,
+ symbol->name());
}
}
if (auto chars{Procedure::Characterize(d, context_)}) {
Index: flang/lib/Semantics/check-call.cpp
===================================================================
--- flang/lib/Semantics/check-call.cpp
+++ flang/lib/Semantics/check-call.cpp
@@ -599,6 +599,10 @@
argProcSymbol->name());
return;
}
+ } else if (argProcSymbol->has<ProcBindingDetails>()) {
+ evaluate::SayWithDeclaration(messages, *argProcSymbol,
+ "Procedure binding '%s' passed as an actual argument"_port_en_US,
+ argProcSymbol->name());
}
}
if (auto argChars{characteristics::DummyArgument::FromActual(
Index: flang/docs/Extensions.md
===================================================================
--- flang/docs/Extensions.md
+++ flang/docs/Extensions.md
@@ -247,6 +247,9 @@
if a binding has renaming with "=> proc".
The colons are not necessary for an unambiguous parse, C768
notwithstanding.
+* A type-bound procedure binding can be passed as an actual
+ argument corresponding to a dummy procedure and can be used as
+ the target of a procedure pointer assignment statement.
### Extensions supported when enabled by options
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