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* [Bug fortran/103475] New: ICE in gfc_expr_attr, at fortran/primary.c:2782
@ 2021-11-29 18:52 gscfq@t-online.de
2021-11-29 19:44 ` [Bug fortran/103475] " kargl at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: gscfq@t-online.de @ 2021-11-29 18:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103475
Bug ID: 103475
Summary: ICE in gfc_expr_attr, at fortran/primary.c:2782
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
With option -Wall and a missing attribute allocatable or pointer :
(affects version down to at least r5)
(gcc configured with --enable-checking=yes)
$ cat z1.f90
program p
type t
end type
class(t) :: x
y = x()
end
$ gfortran-12-20211128 -c z1.f90 -Wall
z1.f90:4:16:
4 | class(t) :: x
| 1
Error: CLASS variable 'x' at (1) must be dummy, allocatable or pointer
f951: internal compiler error: Segmentation fault
0xf0942f crash_signal
../../gcc/toplev.c:322
0x842464 gfc_expr_attr(gfc_expr*)
../../gcc/fortran/primary.c:2782
0x7e02eb gfc_check_assign(gfc_expr*, gfc_expr*, int, bool)
../../gcc/fortran/expr.c:3734
0x84a6d5 resolve_ordinary_assign
../../gcc/fortran/resolve.c:11188
0x852a3c gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:12047
0x854f97 resolve_codes
../../gcc/fortran/resolve.c:17536
0x85505e gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:17571
0x83d314 resolve_all_program_units
../../gcc/fortran/parse.c:6573
0x83d314 gfc_parse_file()
../../gcc/fortran/parse.c:6829
0x88b37f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:216
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/103475] ICE in gfc_expr_attr, at fortran/primary.c:2782
2021-11-29 18:52 [Bug fortran/103475] New: ICE in gfc_expr_attr, at fortran/primary.c:2782 gscfq@t-online.de
@ 2021-11-29 19:44 ` kargl at gcc dot gnu.org
2022-01-18 20:53 ` anlauf at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: kargl at gcc dot gnu.org @ 2021-11-29 19:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103475
kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-11-29
Ever confirmed|0 |1
Priority|P3 |P4
--- Comment #1 from kargl at gcc dot gnu.org ---
Classic NULL pointer dereference.
diff --git a/gcc/fortran/primary.c b/gcc/fortran/primary.c
index d873264a08e..0cb783dfc66 100644
--- a/gcc/fortran/primary.c
+++ b/gcc/fortran/primary.c
@@ -2777,7 +2777,7 @@ gfc_expr_attr (gfc_expr *e)
{
gfc_symbol *sym = e->value.function.esym->result;
attr = sym->attr;
- if (sym->ts.type == BT_CLASS)
+ if (sym->ts.type == BT_CLASS && CLASS_DATA (sym))
{
attr.dimension = CLASS_DATA (sym)->attr.dimension;
attr.pointer = CLASS_DATA (sym)->attr.class_pointer;
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/103475] ICE in gfc_expr_attr, at fortran/primary.c:2782
2021-11-29 18:52 [Bug fortran/103475] New: ICE in gfc_expr_attr, at fortran/primary.c:2782 gscfq@t-online.de
2021-11-29 19:44 ` [Bug fortran/103475] " kargl at gcc dot gnu.org
@ 2022-01-18 20:53 ` anlauf at gcc dot gnu.org
2023-02-13 20:05 ` anlauf at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: anlauf at gcc dot gnu.org @ 2022-01-18 20:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103475
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #2 from anlauf at gcc dot gnu.org ---
While the patch in comment#1 looks correct, I don't see the ICE for r12-6697.
Running under gdb shows why: we seem to no longer get here.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/103475] ICE in gfc_expr_attr, at fortran/primary.c:2782
2021-11-29 18:52 [Bug fortran/103475] New: ICE in gfc_expr_attr, at fortran/primary.c:2782 gscfq@t-online.de
2021-11-29 19:44 ` [Bug fortran/103475] " kargl at gcc dot gnu.org
2022-01-18 20:53 ` anlauf at gcc dot gnu.org
@ 2023-02-13 20:05 ` anlauf at gcc dot gnu.org
2023-02-13 21:06 ` cvs-commit at gcc dot gnu.org
2023-02-13 21:14 ` anlauf at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: anlauf at gcc dot gnu.org @ 2023-02-13 20:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103475
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |anlauf at gcc dot gnu.org
Status|WAITING |ASSIGNED
--- Comment #3 from anlauf at gcc dot gnu.org ---
Can reproduce now. Taking.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/103475] ICE in gfc_expr_attr, at fortran/primary.c:2782
2021-11-29 18:52 [Bug fortran/103475] New: ICE in gfc_expr_attr, at fortran/primary.c:2782 gscfq@t-online.de
` (2 preceding siblings ...)
2023-02-13 20:05 ` anlauf at gcc dot gnu.org
@ 2023-02-13 21:06 ` cvs-commit at gcc dot gnu.org
2023-02-13 21:14 ` anlauf at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2023-02-13 21:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103475
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Harald Anlauf <anlauf@gcc.gnu.org>:
https://gcc.gnu.org/g:2ce7e2a83e18a27fe9c659f8667fc24f0df4ea9a
commit r13-5970-g2ce7e2a83e18a27fe9c659f8667fc24f0df4ea9a
Author: Harald Anlauf <anlauf@gmx.de>
Date: Mon Feb 13 22:02:44 2023 +0100
Fortran: error recovery after invalid use of CLASS variable [PR103475]
gcc/fortran/ChangeLog:
PR fortran/103475
* primary.cc (gfc_expr_attr): Avoid NULL pointer dereference for
invalid use of CLASS variable.
gcc/testsuite/ChangeLog:
PR fortran/103475
* gfortran.dg/pr103475.f90: New test.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug fortran/103475] ICE in gfc_expr_attr, at fortran/primary.c:2782
2021-11-29 18:52 [Bug fortran/103475] New: ICE in gfc_expr_attr, at fortran/primary.c:2782 gscfq@t-online.de
` (3 preceding siblings ...)
2023-02-13 21:06 ` cvs-commit at gcc dot gnu.org
@ 2023-02-13 21:14 ` anlauf at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: anlauf at gcc dot gnu.org @ 2023-02-13 21:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103475
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |13.0
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #5 from anlauf at gcc dot gnu.org ---
Fixed on mainline.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2023-02-13 21:14 UTC | newest]
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2021-11-29 18:52 [Bug fortran/103475] New: ICE in gfc_expr_attr, at fortran/primary.c:2782 gscfq@t-online.de
2021-11-29 19:44 ` [Bug fortran/103475] " kargl at gcc dot gnu.org
2022-01-18 20:53 ` anlauf at gcc dot gnu.org
2023-02-13 20:05 ` anlauf at gcc dot gnu.org
2023-02-13 21:06 ` cvs-commit at gcc dot gnu.org
2023-02-13 21:14 ` anlauf at gcc dot gnu.org
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