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* [Bug fortran/66113] New: Variable n cannot appear in the expression with nested blocks
@ 2015-05-11 19:28 tkoenig at gcc dot gnu.org
2015-05-11 20:01 ` [Bug fortran/66113] " dominiq at lps dot ens.fr
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: tkoenig at gcc dot gnu.org @ 2015-05-11 19:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66113
Bug ID: 66113
Summary: Variable n cannot appear in the expression with nested
blocks
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: tkoenig at gcc dot gnu.org
Target Milestone: ---
ig25@linux-fd1f:~/Krempel/Block> cat block.f90
program main
integer :: n
n = 3
block
block
block
real, dimension(n) :: a
end block
end block
end block
end program main
ig25@linux-fd1f:~/Krempel/Block> gfortran block.f90
block.f90:7:24:
real, dimension(n) :: a
1
Error: Variable »n« cannot appear in the expression at (1)
This is bogus.
Any solution should include the case of an arbitrary number
of nested blocks.
>From gcc-bugs-return-486030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon May 11 19:45:20 2015
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From: "jens.gustedt at inria dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/65471] type interpretation in _Generic
Date: Mon, 11 May 2015 19:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide471
--- Comment #2 from Jens Gustedt <jens.gustedt at inria dot fr> ---
For referece, I have now a paper at the ISO committee:
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1930.htm
we will look at it in the automn session to decide what to do with it.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/66113] Variable n cannot appear in the expression with nested blocks
2015-05-11 19:28 [Bug fortran/66113] New: Variable n cannot appear in the expression with nested blocks tkoenig at gcc dot gnu.org
@ 2015-05-11 20:01 ` dominiq at lps dot ens.fr
2015-05-11 20:34 ` tkoenig at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: dominiq at lps dot ens.fr @ 2015-05-11 20:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66113
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Is not the code invalid?
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/66113] Variable n cannot appear in the expression with nested blocks
2015-05-11 19:28 [Bug fortran/66113] New: Variable n cannot appear in the expression with nested blocks tkoenig at gcc dot gnu.org
2015-05-11 20:01 ` [Bug fortran/66113] " dominiq at lps dot ens.fr
@ 2015-05-11 20:34 ` tkoenig at gcc dot gnu.org
2015-05-11 20:56 ` mikael at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: tkoenig at gcc dot gnu.org @ 2015-05-11 20:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66113
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #1)
> Is not the code invalid?
I don't think it is invalid.
This works as expected:
program main
integer :: n
n = 3
block
block
real, dimension(n) :: a
end block
end block
end program main
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/66113] Variable n cannot appear in the expression with nested blocks
2015-05-11 19:28 [Bug fortran/66113] New: Variable n cannot appear in the expression with nested blocks tkoenig at gcc dot gnu.org
2015-05-11 20:01 ` [Bug fortran/66113] " dominiq at lps dot ens.fr
2015-05-11 20:34 ` tkoenig at gcc dot gnu.org
@ 2015-05-11 20:56 ` mikael at gcc dot gnu.org
2015-05-12 6:52 ` tkoenig at gcc dot gnu.org
2015-05-16 12:35 ` tkoenig at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: mikael at gcc dot gnu.org @ 2015-05-11 20:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66113
Mikael Morin <mikael at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mikael at gcc dot gnu.org
--- Comment #3 from Mikael Morin <mikael at gcc dot gnu.org> ---
Some people write strange code. ;-)
This is related to the inline matmul patch isn't it?
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/66113] Variable n cannot appear in the expression with nested blocks
2015-05-11 19:28 [Bug fortran/66113] New: Variable n cannot appear in the expression with nested blocks tkoenig at gcc dot gnu.org
` (2 preceding siblings ...)
2015-05-11 20:56 ` mikael at gcc dot gnu.org
@ 2015-05-12 6:52 ` tkoenig at gcc dot gnu.org
2015-05-16 12:35 ` tkoenig at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: tkoenig at gcc dot gnu.org @ 2015-05-12 6:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66113
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The reason is that I want to make creation of temporary
variables for arrays more sane.
Currently, temporary arrays are handled using an allocatable array
variable. This obviously does not work if -fno-realloc-lhs is
specified, and introduces unneeded complexity in the generated
code, which is hard for the middle-end optimizers to remove.
What I want to do is, if I want to create a temporary variable for
an array, is to change
real, dimension(something,other) :: a
a(f(x),1:3)
into
block
freeze = f(x)
size_1 = 1;
size_2 = 3;
block
real, dimension(size_1, size_2) :: a_tmp
a_tmp(:,;) = a(freeze, 1:3)
...
end block
end block
While this might work in the most simple cases, I don't want
to introduce instability by hitting a bug with too many nesting
levels.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/66113] Variable n cannot appear in the expression with nested blocks
2015-05-11 19:28 [Bug fortran/66113] New: Variable n cannot appear in the expression with nested blocks tkoenig at gcc dot gnu.org
` (3 preceding siblings ...)
2015-05-12 6:52 ` tkoenig at gcc dot gnu.org
@ 2015-05-16 12:35 ` tkoenig at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: tkoenig at gcc dot gnu.org @ 2015-05-16 12:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66113
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on trunk, closing.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-05-16 12:35 UTC | newest]
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2015-05-11 19:28 [Bug fortran/66113] New: Variable n cannot appear in the expression with nested blocks tkoenig at gcc dot gnu.org
2015-05-11 20:01 ` [Bug fortran/66113] " dominiq at lps dot ens.fr
2015-05-11 20:34 ` tkoenig at gcc dot gnu.org
2015-05-11 20:56 ` mikael at gcc dot gnu.org
2015-05-12 6:52 ` tkoenig at gcc dot gnu.org
2015-05-16 12:35 ` tkoenig at gcc dot gnu.org
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