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* [Bug analyzer/96723] New: [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer
@ 2020-08-20 11:06 zsojka at seznam dot cz
2020-08-20 17:13 ` [Bug analyzer/96723] " dmalcolm at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zsojka at seznam dot cz @ 2020-08-20 11:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96723
Bug ID: 96723
Summary: [11 Regression] ICE: SIGSEGV: infinite recursion in
ana::region::get_subregions_for_binding with -Og
-fanalyzer
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: analyzer
Assignee: dmalcolm at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Created attachment 49086
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49086&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-g++ -Og -fanalyzer testcase.C
x86_64-pc-linux-gnu-g++: internal compiler error: Segmentation fault signal
terminated program cc1plus
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
(gdb) bt
#0 0x00007ffff772a0b6 in _int_malloc () from /lib64/libc.so.6
#1 0x00007ffff772b9e4 in malloc () from /lib64/libc.so.6
#2 0x0000000001fec7f5 in operator new(unsigned long) ()
#3 0x00000000016c75e3 in ana::region_model_manager::get_field_region
(this=this@entry=0x7fffffffcc10, parent=parent@entry=0x10336890,
field=field@entry=0x7ffff75e8f00)
at /repo/gcc-trunk/gcc/analyzer/region-model.h:2352
#4 0x00000000016ac2f6 in ana::region::get_subregions_for_binding
(this=0x10336890, mgr=0x7fffffffcc10, relative_bit_offset=...,
size_in_bits=..., type=0x7ffff74ad000, out=0x7fffffffbec8)
at /repo/gcc-trunk/gcc/analyzer/region.cc:314
#5 0x00000000016ac33f in ana::region::get_subregions_for_binding
(this=0x10336510, mgr=0x7fffffffcc10, relative_bit_offset=...,
size_in_bits=..., type=0x7ffff74ad000, out=0x7fffffffbec8)
at /repo/gcc-trunk/gcc/analyzer/region.cc:315
#6 0x00000000016ac33f in ana::region::get_subregions_for_binding
(this=0x10336190, mgr=0x7fffffffcc10, relative_bit_offset=...,
size_in_bits=..., type=0x7ffff74ad000, out=0x7fffffffbec8)
at /repo/gcc-trunk/gcc/analyzer/region.cc:315
#7 0x00000000016ac33f in ana::region::get_subregions_for_binding
(this=0x10335e10, mgr=0x7fffffffcc10, relative_bit_offset=...,
size_in_bits=..., type=0x7ffff74ad000, out=0x7fffffffbec8)
...
$ x86_64-pc-linux-gnu-g++ -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/x86_64-pc-linux-gnu-g++
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r11-2779-20200820091258-g1763ec9b20c-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r11-2779-20200820091258-g1763ec9b20c-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.0.0 20200820 (experimental) (GCC)
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug analyzer/96723] [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer
2020-08-20 11:06 [Bug analyzer/96723] New: [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer zsojka at seznam dot cz
@ 2020-08-20 17:13 ` dmalcolm at gcc dot gnu.org
2020-08-20 18:01 ` asolokha at gmx dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: dmalcolm at gcc dot gnu.org @ 2020-08-20 17:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96723
David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2020-08-20
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Thanks for filing this; am working on a fix.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug analyzer/96723] [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer
2020-08-20 11:06 [Bug analyzer/96723] New: [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer zsojka at seznam dot cz
2020-08-20 17:13 ` [Bug analyzer/96723] " dmalcolm at gcc dot gnu.org
@ 2020-08-20 18:01 ` asolokha at gmx dot com
2020-08-20 21:02 ` cvs-commit at gcc dot gnu.org
2020-08-20 21:04 ` dmalcolm at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: asolokha at gmx dot com @ 2020-08-20 18:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96723
Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |asolokha at gmx dot com
--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
*** Bug 96666 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug analyzer/96723] [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer
2020-08-20 11:06 [Bug analyzer/96723] New: [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer zsojka at seznam dot cz
2020-08-20 17:13 ` [Bug analyzer/96723] " dmalcolm at gcc dot gnu.org
2020-08-20 18:01 ` asolokha at gmx dot com
@ 2020-08-20 21:02 ` cvs-commit at gcc dot gnu.org
2020-08-20 21:04 ` dmalcolm at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-08-20 21:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96723
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by David Malcolm <dmalcolm@gcc.gnu.org>:
https://gcc.gnu.org/g:00cb0f5840795698557731c6e549a5ce99573223
commit r11-2789-g00cb0f5840795698557731c6e549a5ce99573223
Author: David Malcolm <dmalcolm@redhat.com>
Date: Thu Aug 20 10:00:49 2020 -0400
analyzer: fix infinite recursion ICE on unions [PR96723]
Attempts to store sm-state into a union in C++ triggered an infinite
recursion when trying to generate a representative tree, due to
erroneously trying to use the dtor of the union as a field.
Fix it by filtering out non-FIELD_DECLs when walking TYPE_FIELDs
in region::get_subregions_for_binding.
gcc/analyzer/ChangeLog:
PR analyzer/96723
* region-model-manager.cc
(region_model_manager::get_field_region): Assert that field is a
FIELD_DECL.
* region.cc (region::get_subregions_for_binding): In
union-handling, filter the TYPE_FIELDS traversal to just
FIELD_DECLs.
gcc/testsuite/ChangeLog:
PR analyzer/96723
* g++.dg/analyzer/pr96723.C: New test.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug analyzer/96723] [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer
2020-08-20 11:06 [Bug analyzer/96723] New: [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer zsojka at seznam dot cz
` (2 preceding siblings ...)
2020-08-20 21:02 ` cvs-commit at gcc dot gnu.org
@ 2020-08-20 21:04 ` dmalcolm at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: dmalcolm at gcc dot gnu.org @ 2020-08-20 21:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96723
David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Should be fixed by the above commit.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2020-08-20 11:06 [Bug analyzer/96723] New: [11 Regression] ICE: SIGSEGV: infinite recursion in ana::region::get_subregions_for_binding with -Og -fanalyzer zsojka at seznam dot cz
2020-08-20 17:13 ` [Bug analyzer/96723] " dmalcolm at gcc dot gnu.org
2020-08-20 18:01 ` asolokha at gmx dot com
2020-08-20 21:02 ` cvs-commit at gcc dot gnu.org
2020-08-20 21:04 ` dmalcolm at gcc dot gnu.org
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