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* [Bug fortran/33760] New: Bind(C): Using C_PTR as structure constructor gives an ICE
@ 2007-10-13 11:05 burnus at gcc dot gnu dot org
2007-10-17 4:01 ` [Bug fortran/33760] " patchapp at dberlin dot org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-10-13 11:05 UTC (permalink / raw)
To: gcc-bugs
gfortran crashes if one uses
cptr = C_PTR(p+1)
Here, C_PTR is a structure constructor; this usage is invalid Fortran 2003 (as
type(C_PTR) has PRIVATE components according to the Fortran 2003 standard); NAG
f95 therefore diagnoses:
Error: Components of structure constructor 'c_ptr' at (1) are PRIVATE
gfortran allows currently to access the private components to allow to print
the pointer address as in
print *, cptr
(For -std=f2003, this gives the expected error because of the private
components. However, for C_PTR(..) -std=f2003 does not help.)
Valgrind:
==15961== Invalid read of size 8
==15961== at 0x49F466: gfc_conv_expr (trans-expr.c:3316)
==15961== by 0x49FB9C: gfc_trans_assignment_1 (trans-expr.c:4075)
==15961== by 0x49FDAC: gfc_trans_assignment (trans-expr.c:4222)
==15961== by 0x482E67: gfc_trans_code (trans.c:993)
==15961== by 0x498669: gfc_generate_function_code (trans-decl.c:3307)
==15961== by 0x45462B: gfc_parse_file (parse.c:3384)
Test program, found at
http://groups.google.com/group/comp.lang.fortran/browse_thread/thread/0ea1d42c43b6d54a/
program main
use ISO_C_BINDING
implicit none
integer(C_INTPTR_T) p
type(C_PTR) cptr
p = 0
cptr = C_PTR(p+1)
end program main
--
Summary: Bind(C): Using C_PTR as structure constructor gives an
ICE
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: burnus at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33760
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/33760] Bind(C): Using C_PTR as structure constructor gives an ICE
2007-10-13 11:05 [Bug fortran/33760] New: Bind(C): Using C_PTR as structure constructor gives an ICE burnus at gcc dot gnu dot org
@ 2007-10-17 4:01 ` patchapp at dberlin dot org
2007-10-17 6:57 ` burnus at gcc dot gnu dot org
2007-10-17 6:57 ` burnus at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: patchapp at dberlin dot org @ 2007-10-17 4:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from patchapp at dberlin dot org 2007-10-17 04:01 -------
Subject: Bug number PR 33760
A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2007-10/msg00925.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33760
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/33760] Bind(C): Using C_PTR as structure constructor gives an ICE
2007-10-13 11:05 [Bug fortran/33760] New: Bind(C): Using C_PTR as structure constructor gives an ICE burnus at gcc dot gnu dot org
2007-10-17 4:01 ` [Bug fortran/33760] " patchapp at dberlin dot org
2007-10-17 6:57 ` burnus at gcc dot gnu dot org
@ 2007-10-17 6:57 ` burnus at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-10-17 6:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from burnus at gcc dot gnu dot org 2007-10-17 06:57 -------
FIXED on the trunk (4.3.0).
--
burnus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33760
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/33760] Bind(C): Using C_PTR as structure constructor gives an ICE
2007-10-13 11:05 [Bug fortran/33760] New: Bind(C): Using C_PTR as structure constructor gives an ICE burnus at gcc dot gnu dot org
2007-10-17 4:01 ` [Bug fortran/33760] " patchapp at dberlin dot org
@ 2007-10-17 6:57 ` burnus at gcc dot gnu dot org
2007-10-17 6:57 ` burnus at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-10-17 6:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from burnus at gcc dot gnu dot org 2007-10-17 06:57 -------
Subject: Bug 33760
Author: burnus
Date: Wed Oct 17 06:57:06 2007
New Revision: 129402
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=129402
Log:
2007-10-17 Christopher D. Rickett <crickett@lanl.gov>
PR fortran/33760
* symbol.c (gen_special_c_interop_ptr): Remove code to create
constructor for c_null_ptr and c_null_funptr with value of 0.
* expr.c (check_init_expr): Prevent check on constructors for
iso_c_binding derived types.
* resolve.c (resolve_structure_cons): Verify that the user isn't
trying to invoke a structure constructor for one of the
iso_c_binding derived types.
2007-10-17 Christopher D. Rickett <crickett@lanl.gov>
PR fortran/33760
* gfortran.dg/c_ptr_tests_13.f03: New test case.
Added:
trunk/gcc/testsuite/gfortran.dg/c_ptr_tests_13.f03
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/symbol.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33760
^ permalink raw reply [flat|nested] 4+ messages in thread
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2007-10-13 11:05 [Bug fortran/33760] New: Bind(C): Using C_PTR as structure constructor gives an ICE burnus at gcc dot gnu dot org
2007-10-17 4:01 ` [Bug fortran/33760] " patchapp at dberlin dot org
2007-10-17 6:57 ` burnus at gcc dot gnu dot org
2007-10-17 6:57 ` burnus at gcc dot gnu dot org
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