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* [Bug fortran/104849] New: ICE in find_array_section, at fortran/expr.cc:1616
@ 2022-03-08 20:01 gscfq@t-online.de
2022-03-09 20:31 ` [Bug fortran/104849] " anlauf at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: gscfq@t-online.de @ 2022-03-08 20:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104849
Bug ID: 104849
Summary: ICE in find_array_section, at fortran/expr.cc:1616
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: ---
Affects versions down to at least r5 :
$ cat z1.f90
program p
integer, parameter :: a(:) = [1, 2]
integer :: x(2)
data x /a(:)/
end
$ cat z2.f90
program p
character(3), parameter :: a(:) = ['123']
character(3) :: x(1)
data x /a(:)/
end
$ cat z3.f90
program p
character, parameter :: c(:) = ['1', '2', '3']
type t
integer :: a
character :: b(3)
end type
type(t) :: x = t(1, c(:))
end
$ gfortran-12-20220306 -c z1.f90
f951: internal compiler error: Segmentation fault
0xccad7f crash_signal
../../gcc/toplev.cc:322
0x6f39cc find_array_section
../../gcc/fortran/expr.cc:1616
0x6f537a simplify_const_ref
../../gcc/fortran/expr.cc:1932
0x6f5eae gfc_simplify_expr(gfc_expr*, int)
../../gcc/fortran/expr.cc:2323
0x6f611b simplify_parameter_variable
../../gcc/fortran/expr.cc:2152
0x6f5067 gfc_reduce_init_expr(gfc_expr*)
../../gcc/fortran/expr.cc:3163
0x6f7fd0 gfc_match_init_expr(gfc_expr**)
../../gcc/fortran/expr.cc:3209
0x6d8212 match_data_constant
../../gcc/fortran/decl.cc:461
0x6d8353 top_val_list
../../gcc/fortran/decl.cc:499
0x6d8662 gfc_match_data()
../../gcc/fortran/decl.cc:716
0x748681 match_word
../../gcc/fortran/parse.cc:67
0x74d87e decode_statement
../../gcc/fortran/parse.cc:471
0x74e5ea next_free
../../gcc/fortran/parse.cc:1397
0x74e5ea next_statement
../../gcc/fortran/parse.cc:1629
0x74fb7b parse_spec
../../gcc/fortran/parse.cc:4168
0x752ccc parse_progunit
../../gcc/fortran/parse.cc:6192
0x754391 gfc_parse_file()
../../gcc/fortran/parse.cc:6737
0x7a1edf gfc_be_parse_file
../../gcc/fortran/f95-lang.cc:216
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/104849] ICE in find_array_section, at fortran/expr.cc:1616
2022-03-08 20:01 [Bug fortran/104849] New: ICE in find_array_section, at fortran/expr.cc:1616 gscfq@t-online.de
@ 2022-03-09 20:31 ` anlauf at gcc dot gnu.org
2022-03-09 20:59 ` cvs-commit at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: anlauf at gcc dot gnu.org @ 2022-03-09 20:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104849
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-03-09
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
CC| |anlauf at gcc dot gnu.org
--- Comment #1 from anlauf at gcc dot gnu.org ---
Obvious patch for NULL pointer dereference:
diff --git a/gcc/fortran/expr.cc b/gcc/fortran/expr.cc
index c9c0ba4cc2e..86d61fed302 100644
--- a/gcc/fortran/expr.cc
+++ b/gcc/fortran/expr.cc
@@ -1594,7 +1594,9 @@ find_array_section (gfc_expr *expr, gfc_ref *ref)
{
if ((begin && begin->expr_type != EXPR_CONSTANT)
|| (finish && finish->expr_type != EXPR_CONSTANT)
- || (step && step->expr_type != EXPR_CONSTANT))
+ || (step && step->expr_type != EXPR_CONSTANT)
+ || (!begin && !lower)
+ || (!finish && !upper))
{
t = false;
goto cleanup;
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/104849] ICE in find_array_section, at fortran/expr.cc:1616
2022-03-08 20:01 [Bug fortran/104849] New: ICE in find_array_section, at fortran/expr.cc:1616 gscfq@t-online.de
2022-03-09 20:31 ` [Bug fortran/104849] " anlauf at gcc dot gnu.org
@ 2022-03-09 20:59 ` cvs-commit at gcc dot gnu.org
2022-03-09 21:05 ` anlauf at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-03-09 20:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104849
--- Comment #2 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:22015e77d3e45306077396b9de8a8a28bb67fb20
commit r12-7569-g22015e77d3e45306077396b9de8a8a28bb67fb20
Author: Harald Anlauf <anlauf@gmx.de>
Date: Wed Mar 9 21:58:26 2022 +0100
Fortran: improve error recovery on invalid array section
gcc/fortran/ChangeLog:
PR fortran/104849
* expr.cc (find_array_section): Avoid NULL pointer dereference on
invalid array section.
gcc/testsuite/ChangeLog:
PR fortran/104849
* gfortran.dg/pr104849.f90: New test.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/104849] ICE in find_array_section, at fortran/expr.cc:1616
2022-03-08 20:01 [Bug fortran/104849] New: ICE in find_array_section, at fortran/expr.cc:1616 gscfq@t-online.de
2022-03-09 20:31 ` [Bug fortran/104849] " anlauf at gcc dot gnu.org
2022-03-09 20:59 ` cvs-commit at gcc dot gnu.org
@ 2022-03-09 21:05 ` anlauf at gcc dot gnu.org
2022-05-16 19:11 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: anlauf at gcc dot gnu.org @ 2022-03-09 21:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104849
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |12.0
--- Comment #3 from anlauf at gcc dot gnu.org ---
Fixed for gcc-12. Closing.
Thanks for the report!
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/104849] ICE in find_array_section, at fortran/expr.cc:1616
2022-03-08 20:01 [Bug fortran/104849] New: ICE in find_array_section, at fortran/expr.cc:1616 gscfq@t-online.de
` (2 preceding siblings ...)
2022-03-09 21:05 ` anlauf at gcc dot gnu.org
@ 2022-05-16 19:11 ` cvs-commit at gcc dot gnu.org
2022-05-16 19:40 ` cvs-commit at gcc dot gnu.org
2022-05-16 20:05 ` cvs-commit at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-16 19:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104849
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Harald Anlauf
<anlauf@gcc.gnu.org>:
https://gcc.gnu.org/g:50c73234630d51e7d66986710afd1af23851002b
commit r11-10006-g50c73234630d51e7d66986710afd1af23851002b
Author: Harald Anlauf <anlauf@gmx.de>
Date: Wed Mar 9 21:58:26 2022 +0100
Fortran: improve error recovery on invalid array section
gcc/fortran/ChangeLog:
PR fortran/104849
* expr.c (find_array_section): Avoid NULL pointer dereference on
invalid array section.
gcc/testsuite/ChangeLog:
PR fortran/104849
* gfortran.dg/pr104849.f90: New test.
(cherry picked from commit 22015e77d3e45306077396b9de8a8a28bb67fb20)
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/104849] ICE in find_array_section, at fortran/expr.cc:1616
2022-03-08 20:01 [Bug fortran/104849] New: ICE in find_array_section, at fortran/expr.cc:1616 gscfq@t-online.de
` (3 preceding siblings ...)
2022-05-16 19:11 ` cvs-commit at gcc dot gnu.org
@ 2022-05-16 19:40 ` cvs-commit at gcc dot gnu.org
2022-05-16 20:05 ` cvs-commit at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-16 19:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104849
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Harald Anlauf
<anlauf@gcc.gnu.org>:
https://gcc.gnu.org/g:9fed680237d2c4242d3273ab8f64c82231d5eeb7
commit r10-10747-g9fed680237d2c4242d3273ab8f64c82231d5eeb7
Author: Harald Anlauf <anlauf@gmx.de>
Date: Wed Mar 9 21:58:26 2022 +0100
Fortran: improve error recovery on invalid array section
gcc/fortran/ChangeLog:
PR fortran/104849
* expr.c (find_array_section): Avoid NULL pointer dereference on
invalid array section.
gcc/testsuite/ChangeLog:
PR fortran/104849
* gfortran.dg/pr104849.f90: New test.
(cherry picked from commit 22015e77d3e45306077396b9de8a8a28bb67fb20)
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/104849] ICE in find_array_section, at fortran/expr.cc:1616
2022-03-08 20:01 [Bug fortran/104849] New: ICE in find_array_section, at fortran/expr.cc:1616 gscfq@t-online.de
` (4 preceding siblings ...)
2022-05-16 19:40 ` cvs-commit at gcc dot gnu.org
@ 2022-05-16 20:05 ` cvs-commit at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-16 20:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104849
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Harald Anlauf
<anlauf@gcc.gnu.org>:
https://gcc.gnu.org/g:6b8cd1fb402163e16d2a139f4bee346ff0c8f234
commit r9-10187-g6b8cd1fb402163e16d2a139f4bee346ff0c8f234
Author: Harald Anlauf <anlauf@gmx.de>
Date: Wed Mar 9 21:58:26 2022 +0100
Fortran: improve error recovery on invalid array section
gcc/fortran/ChangeLog:
PR fortran/104849
* expr.c (find_array_section): Avoid NULL pointer dereference on
invalid array section.
gcc/testsuite/ChangeLog:
PR fortran/104849
* gfortran.dg/pr104849.f90: New test.
(cherry picked from commit 22015e77d3e45306077396b9de8a8a28bb67fb20)
^ permalink raw reply [flat|nested] 7+ messages in thread
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2022-03-08 20:01 [Bug fortran/104849] New: ICE in find_array_section, at fortran/expr.cc:1616 gscfq@t-online.de
2022-03-09 20:31 ` [Bug fortran/104849] " anlauf at gcc dot gnu.org
2022-03-09 20:59 ` cvs-commit at gcc dot gnu.org
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