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* [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code
@ 2021-09-23 20:34 ian at airs dot com
2021-09-24 0:40 ` [Bug tree-optimization/102474] " pinskia at gcc dot gnu.org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: ian at airs dot com @ 2021-09-23 20:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
Bug ID: 102474
Summary: [12 regression] Crash in ipa-modref compiling Go code
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ian at airs dot com
Target Milestone: ---
Compiling this Go program with -O1 -fno-strict-aliasing crashes the compiler in
ipa-modref.
package p
type S struct {
f1 string
f2 interface{}
f3 string
f4 struct {
f41 uint32
f42 struct {
f421 int32
f422 uint32
}
}
f5 struct {
f51 *byte
f52 *byte
f53 *byte
}
f6 struct {
f61 int32
}
f7 struct {
f71 uint64
f72 int64
f73 *byte
}
f8 *byte
}
The crash I see is:
during IPA pass: modref
go1: internal compiler error: in forced_merge, at ipa-modref-tree.h:351
0xcbaff1 modref_access_node::forced_merge(modref_access_node const&, bool)
../../trunk/gcc/ipa-modref-tree.h:351
0xcbe389 modref_ref_node<int>::insert_access(modref_access_node, unsigned long,
bool)
../../trunk/gcc/ipa-modref-tree.h:575
0xcbe8e3 modref_tree<int>::insert(int, int, modref_access_node, bool)
../../trunk/gcc/ipa-modref-tree.h:844
0xcb65de propagate_unknown_call
../../trunk/gcc/ipa-modref.c:3418
0xcb6a69 modref_propagate_in_scc
../../trunk/gcc/ipa-modref.c:3598
0xcb740e execute
../../trunk/gcc/ipa-modref.c:3968
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/102474] [12 regression] Crash in ipa-modref compiling Go code
2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
@ 2021-09-24 0:40 ` pinskia at gcc dot gnu.org
2021-09-24 0:42 ` [Bug ipa/102474] " pinskia at gcc dot gnu.org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-09-24 0:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Target Milestone|--- |12.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug ipa/102474] [12 regression] Crash in ipa-modref compiling Go code
2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
2021-09-24 0:40 ` [Bug tree-optimization/102474] " pinskia at gcc dot gnu.org
@ 2021-09-24 0:42 ` pinskia at gcc dot gnu.org
2021-09-24 6:53 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-09-24 0:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
Component|tree-optimization |ipa
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
/* We assume that containment and lossless merging
was tested earlier. */
gcc_checking_assert (!contains (a) && !a.contains (*this)
&& !merge (a, record_adjustments));
gcc_checking_assert (parm_offset_known && a.parm_offset_known);
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug ipa/102474] [12 regression] Crash in ipa-modref compiling Go code
2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
2021-09-24 0:40 ` [Bug tree-optimization/102474] " pinskia at gcc dot gnu.org
2021-09-24 0:42 ` [Bug ipa/102474] " pinskia at gcc dot gnu.org
@ 2021-09-24 6:53 ` rguenth at gcc dot gnu.org
2021-09-27 12:38 ` marxin at gcc dot gnu.org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-09-24 6:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug ipa/102474] [12 regression] Crash in ipa-modref compiling Go code
2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
` (2 preceding siblings ...)
2021-09-24 6:53 ` rguenth at gcc dot gnu.org
@ 2021-09-27 12:38 ` marxin at gcc dot gnu.org
2021-09-28 23:24 ` ian at airs dot com
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: marxin at gcc dot gnu.org @ 2021-09-27 12:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-09-27
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug ipa/102474] [12 regression] Crash in ipa-modref compiling Go code
2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
` (3 preceding siblings ...)
2021-09-27 12:38 ` marxin at gcc dot gnu.org
@ 2021-09-28 23:24 ` ian at airs dot com
2021-09-30 11:55 ` marxin at gcc dot gnu.org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: ian at airs dot com @ 2021-09-28 23:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
I did a git bisect, and it reported that the problem was introduced by
commit f5ff3a8ed4ca91737c16757ce4938cf2e0187fc0
Author: Jan Hubicka <hubicka@ucw.cz>
Date: Sat Aug 28 20:57:08 2021 +0200
Improve handling of table overflows in modref_ref_node
gcc/ChangeLog:
* ipa-modref-tree.h (modref_access_node::merge): Break out
logic combining offsets and logic merging ranges to ...
(modref_access_node::combined_offsets): ... here
(modref_access_node::update2): ... here
(modref_access_node::closer_pair_p): New member function.
(modref_access_node::forced_merge): New member function.
(modre_ref_node::insert): Do merging when table is full.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/modref-9.c: New test.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug ipa/102474] [12 regression] Crash in ipa-modref compiling Go code
2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
` (4 preceding siblings ...)
2021-09-28 23:24 ` ian at airs dot com
@ 2021-09-30 11:55 ` marxin at gcc dot gnu.org
2021-10-06 14:57 ` hubicka at gcc dot gnu.org
2021-10-07 18:50 ` ian at airs dot com
7 siblings, 0 replies; 9+ messages in thread
From: marxin at gcc dot gnu.org @ 2021-09-30 11:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |hubicka at gcc dot gnu.org
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug ipa/102474] [12 regression] Crash in ipa-modref compiling Go code
2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
` (5 preceding siblings ...)
2021-09-30 11:55 ` marxin at gcc dot gnu.org
@ 2021-10-06 14:57 ` hubicka at gcc dot gnu.org
2021-10-07 18:50 ` ian at airs dot com
7 siblings, 0 replies; 9+ messages in thread
From: hubicka at gcc dot gnu.org @ 2021-10-06 14:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
may be dup of PR102581 (where I attached fix I am testing)
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug ipa/102474] [12 regression] Crash in ipa-modref compiling Go code
2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
` (6 preceding siblings ...)
2021-10-06 14:57 ` hubicka at gcc dot gnu.org
@ 2021-10-07 18:50 ` ian at airs dot com
7 siblings, 0 replies; 9+ messages in thread
From: ian at airs dot com @ 2021-10-07 18:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102474
Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DUPLICATE
Status|ASSIGNED |RESOLVED
--- Comment #4 from Ian Lance Taylor <ian at airs dot com> ---
This was fixed by the fix for PR 102581.
*** This bug has been marked as a duplicate of bug 102581 ***
^ permalink raw reply [flat|nested] 9+ messages in thread
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2021-09-23 20:34 [Bug tree-optimization/102474] New: [12 regression] Crash in ipa-modref compiling Go code ian at airs dot com
2021-09-24 0:40 ` [Bug tree-optimization/102474] " pinskia at gcc dot gnu.org
2021-09-24 0:42 ` [Bug ipa/102474] " pinskia at gcc dot gnu.org
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2021-09-27 12:38 ` marxin at gcc dot gnu.org
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