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* [gcc r10-10882] Fortran: error recovery on invalid CLASS(), PARAMETER declarations [PR105243]
@ 2022-07-03 20:29 Harald Anlauf
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From: Harald Anlauf @ 2022-07-03 20:29 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:290147c4c8e3d9d1f13297b511d3a0afb5e952d4
commit r10-10882-g290147c4c8e3d9d1f13297b511d3a0afb5e952d4
Author: Harald Anlauf <anlauf@gmx.de>
Date: Wed Jun 29 21:36:17 2022 +0200
Fortran: error recovery on invalid CLASS(), PARAMETER declarations [PR105243]
gcc/fortran/ChangeLog:
PR fortran/103137
PR fortran/103138
PR fortran/103693
PR fortran/105243
* decl.c (gfc_match_data_decl): Reject CLASS entity declaration
when it is given the PARAMETER attribute.
gcc/testsuite/ChangeLog:
PR fortran/103137
PR fortran/103138
PR fortran/103693
PR fortran/105243
* gfortran.dg/class_58.f90: Fix test.
* gfortran.dg/class_73.f90: New test.
Co-authored-by: Steven G. Kargl <kargl@gcc.gnu.org>
(cherry picked from commit 4c233cabbe388a6b8957c1507e129090e9267ceb)
Diff:
---
gcc/fortran/decl.c | 8 ++++++++
gcc/testsuite/gfortran.dg/class_58.f90 | 2 +-
gcc/testsuite/gfortran.dg/class_73.f90 | 17 +++++++++++++++++
3 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/gcc/fortran/decl.c b/gcc/fortran/decl.c
index a007bb15333..e7b745b0cdb 100644
--- a/gcc/fortran/decl.c
+++ b/gcc/fortran/decl.c
@@ -6181,6 +6181,14 @@ gfc_match_data_decl (void)
goto cleanup;
}
+ /* F2018:C708. */
+ if (current_ts.type == BT_CLASS && current_attr.flavor == FL_PARAMETER)
+ {
+ gfc_error ("CLASS entity at %C cannot have the PARAMETER attribute");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
if (current_ts.type == BT_CLASS
&& current_ts.u.derived->attr.unlimited_polymorphic)
goto ok;
diff --git a/gcc/testsuite/gfortran.dg/class_58.f90 b/gcc/testsuite/gfortran.dg/class_58.f90
index 20b601a2f51..fceb575432d 100644
--- a/gcc/testsuite/gfortran.dg/class_58.f90
+++ b/gcc/testsuite/gfortran.dg/class_58.f90
@@ -9,5 +9,5 @@ subroutine s
end type
class(t), parameter :: x = t() ! { dg-error "cannot have the PARAMETER attribute" }
class(t), parameter :: y = x ! { dg-error "cannot have the PARAMETER attribute" }
- class(t) :: z = x ! { dg-error "must be dummy, allocatable or pointer" }
+ class(t) :: z = t() ! { dg-error "must be dummy, allocatable or pointer" }
end
diff --git a/gcc/testsuite/gfortran.dg/class_73.f90 b/gcc/testsuite/gfortran.dg/class_73.f90
new file mode 100644
index 00000000000..c11ee38c086
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/class_73.f90
@@ -0,0 +1,17 @@
+! { dg-do compile }
+! Error recovery on invalid CLASS(), PARAMETER declarations
+! PR fortran/103137
+! PR fortran/103138
+! PR fortran/103693
+! PR fortran/105243
+! Contributed by G.Steinmetz
+
+program p
+ type t
+ character(3) :: c = '(a)'
+ end type
+ class(t), parameter :: x = 1. ! { dg-error "PARAMETER attribute" }
+ class(*), parameter :: y = t() ! { dg-error "PARAMETER attribute" }
+ class(*), parameter :: z = 1 ! { dg-error "PARAMETER attribute" }
+ print x%c ! { dg-error "Syntax error" }
+end
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