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* [Bug fortran/100915] New: Bind(c): failure handling C_FUNPTR
@ 2021-06-04 19:32 jrfsousa at gcc dot gnu.org
2021-06-04 19:32 ` [Bug fortran/100915] " jrfsousa at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: jrfsousa at gcc dot gnu.org @ 2021-06-04 19:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100915
Bug ID: 100915
Summary: Bind(c): failure handling C_FUNPTR
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: jrfsousa at gcc dot gnu.org
Target Milestone: ---
Created attachment 50941
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50941&action=edit
Fortran code showing problem
Hi All!
Wrong type, kind and elem_len confuses CFI_address.
Seen on:
GNU Fortran (GCC) 10.3.1 20210526
GNU Fortran (GCC) 11.1.1 20210526
GNU Fortran (GCC) 12.0.0 20210529 (experimental)
Thank you very much.
Best regards,
José Rui
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/100915] Bind(c): failure handling C_FUNPTR
2021-06-04 19:32 [Bug fortran/100915] New: Bind(c): failure handling C_FUNPTR jrfsousa at gcc dot gnu.org
@ 2021-06-04 19:32 ` jrfsousa at gcc dot gnu.org
2021-06-13 18:44 ` jrfsousa at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: jrfsousa at gcc dot gnu.org @ 2021-06-04 19:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100915
--- Comment #1 from José Rui Faustino de Sousa <jrfsousa at gcc dot gnu.org> ---
Created attachment 50942
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50942&action=edit
C code for bind(c)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/100915] Bind(c): failure handling C_FUNPTR
2021-06-04 19:32 [Bug fortran/100915] New: Bind(c): failure handling C_FUNPTR jrfsousa at gcc dot gnu.org
2021-06-04 19:32 ` [Bug fortran/100915] " jrfsousa at gcc dot gnu.org
@ 2021-06-13 18:44 ` jrfsousa at gcc dot gnu.org
2021-06-13 18:45 ` jrfsousa at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: jrfsousa at gcc dot gnu.org @ 2021-06-13 18:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100915
--- Comment #2 from José Rui Faustino de Sousa <jrfsousa at gcc dot gnu.org> ---
Patch posted:
https://gcc.gnu.org/pipermail/fortran/2021-June/056154.html
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/100915] Bind(c): failure handling C_FUNPTR
2021-06-04 19:32 [Bug fortran/100915] New: Bind(c): failure handling C_FUNPTR jrfsousa at gcc dot gnu.org
2021-06-04 19:32 ` [Bug fortran/100915] " jrfsousa at gcc dot gnu.org
2021-06-13 18:44 ` jrfsousa at gcc dot gnu.org
@ 2021-06-13 18:45 ` jrfsousa at gcc dot gnu.org
2021-09-02 23:42 ` cvs-commit at gcc dot gnu.org
2021-10-22 2:41 ` sandra at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jrfsousa at gcc dot gnu.org @ 2021-06-13 18:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100915
--- Comment #3 from José Rui Faustino de Sousa <jrfsousa at gcc dot gnu.org> ---
Created attachment 50997
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50997&action=edit
Patch and changelog
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/100915] Bind(c): failure handling C_FUNPTR
2021-06-04 19:32 [Bug fortran/100915] New: Bind(c): failure handling C_FUNPTR jrfsousa at gcc dot gnu.org
` (2 preceding siblings ...)
2021-06-13 18:45 ` jrfsousa at gcc dot gnu.org
@ 2021-09-02 23:42 ` cvs-commit at gcc dot gnu.org
2021-10-22 2:41 ` sandra at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-09-02 23:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100915
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sandra Loosemore <sandra@gcc.gnu.org>:
https://gcc.gnu.org/g:93b6b2f614eb692d1d8126ec6cb946984a9d01d7
commit r12-3321-g93b6b2f614eb692d1d8126ec6cb946984a9d01d7
Author: Sandra Loosemore <sandra@codesourcery.com>
Date: Wed Aug 18 07:22:03 2021 -0700
libgfortran: Further fixes for GFC/CFI descriptor conversions.
This patch is for:
PR100907 - Bind(c): failure handling wide character
PR100911 - Bind(c): failure handling C_PTR
PR100914 - Bind(c): errors handling complex
PR100915 - Bind(c): failure handling C_FUNPTR
PR100917 - Bind(c): errors handling long double real
All of these problems are related to the GFC descriptors constructed
by the Fortran front end containing ambigous or incomplete
information. This patch does not attempt to change the GFC data
structure or the front end, and only makes the runtime interpret it in
more reasonable ways. It's not a complete fix for any of the listed
issues.
The Fortran front end does not distinguish between C_PTR and
C_FUNPTR, mapping both onto BT_VOID. That is what this patch does also.
The other bugs are related to GFC descriptors only containing elem_len
and not kind. For complex types, the elem_len needs to be divided by
2 and then mapped onto a real kind. On x86 targets, the kind
corresponding to C long double is different than its elem_len; since
we cannot accurately disambiguate between a 16-byte kind 10 long
double from __float128, this patch arbitrarily prefers to interpret that as
the standard long double type rather than the GNU extension.
Similarly, for character types, the GFC descriptor cannot distinguish
between character(kind=c_char, len=4) and character(kind=ucs4, len=1).
But since the front end currently rejects anything other than len=1
(PR92482) this patch uses the latter interpretation.
2021-09-01 Sandra Loosemore <sandra@codesourcery.com>
José Rui Faustino de Sousa <jrfsousa@gmail.com>
gcc/testsuite/
PR fortran/100911
PR fortran/100915
PR fortran/100916
* gfortran.dg/PR100911.c: New file.
* gfortran.dg/PR100911.f90: New file.
* gfortran.dg/PR100914.c: New file.
* gfortran.dg/PR100914.f90: New file.
* gfortran.dg/PR100915.c: New file.
* gfortran.dg/PR100915.f90: New file.
libgfortran/
PR fortran/100907
PR fortran/100911
PR fortran/100914
PR fortran/100915
PR fortran/100917
* ISO_Fortran_binding-1-tmpl.h (CFI_type_cfunptr): Make equivalent
to CFI_type_cptr.
* runtime/ISO_Fortran_binding.c (cfi_desc_to_gfc_desc): Fix
handling of CFI_type_cptr and CFI_type_cfunptr. Additional error
checking and code cleanup.
(gfc_desc_to_cfi_desc): Likewise. Also correct kind mapping
for character, complex, and long double types.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/100915] Bind(c): failure handling C_FUNPTR
2021-06-04 19:32 [Bug fortran/100915] New: Bind(c): failure handling C_FUNPTR jrfsousa at gcc dot gnu.org
` (3 preceding siblings ...)
2021-09-02 23:42 ` cvs-commit at gcc dot gnu.org
@ 2021-10-22 2:41 ` sandra at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: sandra at gcc dot gnu.org @ 2021-10-22 2:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100915
sandra at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|UNCONFIRMED |RESOLVED
CC| |sandra at gcc dot gnu.org
--- Comment #5 from sandra at gcc dot gnu.org ---
Marking this as fixed now.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2021-06-04 19:32 [Bug fortran/100915] New: Bind(c): failure handling C_FUNPTR jrfsousa at gcc dot gnu.org
2021-06-04 19:32 ` [Bug fortran/100915] " jrfsousa at gcc dot gnu.org
2021-06-13 18:44 ` jrfsousa at gcc dot gnu.org
2021-06-13 18:45 ` jrfsousa at gcc dot gnu.org
2021-09-02 23:42 ` cvs-commit at gcc dot gnu.org
2021-10-22 2:41 ` sandra at gcc dot gnu.org
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