From eaf883710c0039eca5caea5115e848adb4ab67bd Mon Sep 17 00:00:00 2001 From: Paul Thomas Date: Thu, 21 Jan 2021 10:00:00 +0000 Subject: [PATCH] Fortran: This patch fixes comments 23 and 24 of PR96320. 2021-01-21 Paul Thomas gcc/fortran PR fortran/96320 * decl.c (gfc_match_modproc): It is not an error to find a module procedure declaration within a contains block. * expr.c (gfc_check_vardef_context): Pure procedure result is assignable. Change 'own_scope' accordingly. * resolve.c (resolve_typebound_procedure): A procedure that has the module procedure attribute is almost certainly a module procedure, whatever its interface. gcc/testsuite/ PR fortran/96320 * gfortran.dg/module_procedure_5.f90 : New test. * gfortran.dg/module_procedure_6.f90 : New test. --- gcc/fortran/decl.c | 3 +- gcc/fortran/expr.c | 3 ++ gcc/fortran/resolve.c | 3 +- gcc/testsuite/gfortran.dg/module_procedure_5.f90 | 31 ++++++++++++++ gcc/testsuite/gfortran.dg/module_procedure_6.f90 | 51 ++++++++++++++++++++++++ 5 files changed, 89 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/gfortran.dg/module_procedure_5.f90 create mode 100644 gcc/testsuite/gfortran.dg/module_procedure_6.f90 diff --git a/gcc/fortran/decl.c b/gcc/fortran/decl.c index 4771b59..7239158 100644 --- a/gcc/fortran/decl.c +++ b/gcc/fortran/decl.c @@ -9856,7 +9856,8 @@ gfc_match_modproc (void) gfc_namespace *module_ns; gfc_interface *old_interface_head, *interface; - if (gfc_state_stack->state != COMP_INTERFACE + if ((gfc_state_stack->state != COMP_INTERFACE + && gfc_state_stack->state != COMP_CONTAINS) || gfc_state_stack->previous == NULL || current_interface.type == INTERFACE_NAMELESS || current_interface.type == INTERFACE_ABSTRACT) diff --git a/gcc/fortran/expr.c b/gcc/fortran/expr.c index 188e796..4f456fc 100644 --- a/gcc/fortran/expr.c +++ b/gcc/fortran/expr.c @@ -6243,6 +6243,9 @@ gfc_check_vardef_context (gfc_expr* e, bool pointer, bool alloc_obj, /* Variable not assignable from a PURE procedure but appears in variable definition context. */ + own_scope = own_scope + || (sym->attr.result && sym->ns->proc_name + && sym == sym->ns->proc_name->result); if (!pointer && !own_scope && gfc_pure (NULL) && gfc_impure_variable (sym)) { if (context) diff --git a/gcc/fortran/resolve.c b/gcc/fortran/resolve.c index bb069ef..c075d0f 100644 --- a/gcc/fortran/resolve.c +++ b/gcc/fortran/resolve.c @@ -14025,7 +14025,8 @@ resolve_typebound_procedure (gfc_symtree* stree) /* Check for F08:C465. */ if ((!proc->attr.subroutine && !proc->attr.function) || (proc->attr.proc != PROC_MODULE - && proc->attr.if_source != IFSRC_IFBODY) + && proc->attr.if_source != IFSRC_IFBODY + && !proc->attr.module_procedure) || proc->attr.abstract) { gfc_error ("%qs must be a module procedure or an external " diff --git a/gcc/testsuite/gfortran.dg/module_procedure_5.f90 b/gcc/testsuite/gfortran.dg/module_procedure_5.f90 new file mode 100644 index 0000000..3dafa06 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/module_procedure_5.f90 @@ -0,0 +1,31 @@ +! { dg-do compile } +! +! Test the fix for the testcase in comment 23 of PR96320, which used to +! fail with the message: Variable ‘new_foo’ cannot appear in a variable +! definition context. +! +! Contributed by Damian Rouson +! +module foobar + implicit none + + type foo + integer bar + end type + + interface + pure module function create() result(new_foo) + implicit none + type(foo) new_foo + end function + end interface + +contains + module procedure create + new_foo%bar = 1 ! Error here + end procedure +end module + + use foobar + print *, create () +end diff --git a/gcc/testsuite/gfortran.dg/module_procedure_6.f90 b/gcc/testsuite/gfortran.dg/module_procedure_6.f90 new file mode 100644 index 0000000..e642d52 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/module_procedure_6.f90 @@ -0,0 +1,51 @@ +! { dg-do run } +! +! Test the fix for the testcase in comment 24 of PR96320, which used to +! fail with the message: ‘set_user_defined’ must be a module procedure or +! an external procedure with an explicit interface at (1) +! +! Contributed by Damian Rouson +! +module hole_interface + type hole_t + integer :: user_defined + real :: hole_diameter + contains + procedure set_user_defined + procedure set_diameter + end type + + interface + module subroutine set_diameter (this, diameter) + class(hole_t) :: this + real :: diameter + end subroutine + + module subroutine set_user_defined(this, user_defined) + class(hole_t) :: this + integer :: user_defined + end subroutine + end interface + +contains + module procedure set_user_defined + this%user_defined = user_defined + end procedure + + module procedure set_diameter + this%hole_diameter = diameter + if (this%user_defined .lt. 0) then + call this%set_user_defined (0) + end if + end procedure +end module + + use hole_interface ! Error was here + type (hole_t) :: ht = hole_t (-1, 0.0) + call ht%set_diameter(1.0) + if ((ht%user_defined .ne. 0) .and. (ht%hole_diameter .ne. 1.0)) stop 1 + call ht%set_user_defined (5) + if ((ht%user_defined .ne. 5) .and. (ht%hole_diameter .ne. 1.0)) stop 2 + call ht%set_diameter(2.0) + if ((ht%user_defined .ne. 5) .and. (ht%hole_diameter .ne. 2.0)) stop 3 +end -- 2.7.4