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* [Bug fortran/102240] New: [F03] derived type parameter does not shadow variable name in enclosing scope
@ 2021-09-08 12:39 roland_wirth at web dot de
2021-09-08 18:02 ` [Bug fortran/102240] [PDT] " anlauf at gcc dot gnu.org
2023-06-30 8:24 ` pault at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: roland_wirth at web dot de @ 2021-09-08 12:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102240
Bug ID: 102240
Summary: [F03] derived type parameter does not shadow variable
name in enclosing scope
Product: gcc
Version: 9.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: roland_wirth at web dot de
Target Milestone: ---
Consider the following module definition:
MODULE mo
IMPLICIT NONE
INTEGER :: n
TYPE t(n)
INTEGER, LEN :: n
INTEGER :: a(n)
END TYPE t
END MODULE
gfortran 9.1.0 produces the following error when trying to compile:
8 | INTEGER :: a(n)
| 1
Error: Variable 'n' at (1) in this context must be constant
Upon renaming the INTEGER variable to some other name `nn` the unit compiles
fine.
The Fortran 2003 standard (N1601) says in the Host association section
[16.4.1.3] that "A name that appears in the scoping unit as [...] (3) A
type-param-name in a derived-type-stmt [...] is a local identifier in the
scoping unit and any entity of the host that has this as its nongeneric name is
inaccessible by that name by host association." If I read that correctly the
type parameter `n` shadows the variable `n`, and the module definition should
be valid Fortran.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug fortran/102240] [PDT] derived type parameter does not shadow variable name in enclosing scope
2021-09-08 12:39 [Bug fortran/102240] New: [F03] derived type parameter does not shadow variable name in enclosing scope roland_wirth at web dot de
@ 2021-09-08 18:02 ` anlauf at gcc dot gnu.org
2023-06-30 8:24 ` pault at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: anlauf at gcc dot gnu.org @ 2021-09-08 18:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102240
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-09-08
Ever confirmed|0 |1
Summary|[F03] derived type |[PDT] derived type
|parameter does not shadow |parameter does not shadow
|variable name in enclosing |variable name in enclosing
|scope |scope
Status|UNCONFIRMED |NEW
--- Comment #1 from anlauf at gcc dot gnu.org ---
Confirmed.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug fortran/102240] [PDT] derived type parameter does not shadow variable name in enclosing scope
2021-09-08 12:39 [Bug fortran/102240] New: [F03] derived type parameter does not shadow variable name in enclosing scope roland_wirth at web dot de
2021-09-08 18:02 ` [Bug fortran/102240] [PDT] " anlauf at gcc dot gnu.org
@ 2023-06-30 8:24 ` pault at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pault at gcc dot gnu.org @ 2023-06-30 8:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102240
Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |82173
CC| |pault at gcc dot gnu.org
--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
Added to PDT meta-bug
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82173
[Bug 82173] [meta-bug] [PDT] Parameterized derived type errors
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-06-30 8:24 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-09-08 12:39 [Bug fortran/102240] New: [F03] derived type parameter does not shadow variable name in enclosing scope roland_wirth at web dot de
2021-09-08 18:02 ` [Bug fortran/102240] [PDT] " anlauf at gcc dot gnu.org
2023-06-30 8:24 ` pault at gcc dot gnu.org
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