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* [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
@ 2020-07-22 22:41 slyfox at inbox dot ru
2020-07-23 6:00 ` [Bug ipa/96291] [10/11 Regression] " rguenth at gcc dot gnu.org
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: slyfox at inbox dot ru @ 2020-07-22 22:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
Bug ID: 96291
Summary: -flto fails as "internal compiler error: Segmentation
fault" during IPA pass: cp
incall_for_symbol_thunks_and_aliases()
Product: gcc
Version: 10.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at inbox dot ru
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Originally reported by Gabriel Marcano as https://bugs.gentoo.org/733482 where
radare-4.5.0 ICEs gcc if that is built with -flto.
ICE is reproducible on both gcc-10 and gcc-11. Here is the minimal(ish)
reproducer:
// cat sdb.c
int b;
void a();
void sdb_ns_free();
void c(int d) {
sdb_ns_free();
a(b, 0);
}
void sdb_free() { c(0); }
// cat ns.c
void sdb_free();
void sdb_ns_free() { sdb_free(); }
// cat main.c
void sdb_free();
void a() { sdb_free(); }
$ x86_64-pc-linux-gnu-gcc -c -O2 -flto -o sdb.o sdb.c
$ x86_64-pc-linux-gnu-gcc -c -O2 -flto -o ns.o ns.c
$ x86_64-pc-linux-gnu-gcc -c -O2 -flto -O0 -o main.o main.c
$+ x86_64-pc-linux-gnu-gcc -O2 -flto -o sdb main.o sdb.o ns.o
during IPA pass: cp
lto1: internal compiler error: Segmentation fault
0xa6d3df crash_signal
/usr/src/debug/sys-devel/gcc-11.0.0_pre9999/gcc-11.0.0_pre9999/gcc/toplev.c:328
0x7f1656e35c3f ???
/usr/src/debug/sys-libs/glibc-2.31-r6/glibc-2.31/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x5d4751 has_undead_caller_from_outside_scc_p
/usr/src/debug/sys-devel/gcc-11.0.0_pre9999/gcc-11.0.0_pre9999/gcc/ipa-cp.c:5670
0x680054 cgraph_node::call_for_symbol_thunks_and_aliases(bool (*)(cgraph_node*,
void*), void*, bool, bool)
/usr/src/debug/sys-devel/gcc-11.0.0_pre9999/gcc-11.0.0_pre9999/gcc/cgraph.c:2450
0x12fe86d identify_dead_nodes
/usr/src/debug/sys-devel/gcc-11.0.0_pre9999/gcc-11.0.0_pre9999/gcc/ipa-cp.c:5687
0x12fe86d ipcp_decision_stage
/usr/src/debug/sys-devel/gcc-11.0.0_pre9999/gcc-11.0.0_pre9999/gcc/ipa-cp.c:5730
0x12fe86d ipcp_driver
/usr/src/debug/sys-devel/gcc-11.0.0_pre9999/gcc-11.0.0_pre9999/gcc/ipa-cp.c:5908
0x12fe86d execute
/usr/src/debug/sys-devel/gcc-11.0.0_pre9999/gcc-11.0.0_pre9999/gcc/ipa-cp.c:5999
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
lto-wrapper: fatal error: /usr/bin/x86_64-pc-linux-gnu-gcc returned 1 exit
status
compilation terminated.
/usr/lib/gcc/x86_64-pc-linux-gnu/11.0.0/../../../../x86_64-pc-linux-gnu/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
@ 2020-07-23 6:00 ` rguenth at gcc dot gnu.org
2020-07-23 9:08 ` marxin at gcc dot gnu.org
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-07-23 6:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jamborm at gcc dot gnu.org
Target Milestone|--- |10.3
Summary|-flto fails as "internal |[10/11 Regression] -flto
|compiler error: |fails as "internal compiler
|Segmentation fault" during |error: Segmentation fault"
|IPA pass: cp |during IPA pass: cp
|incall_for_symbol_thunks_an |incall_for_symbol_thunks_an
|d_aliases() |d_aliases()
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
2020-07-23 6:00 ` [Bug ipa/96291] [10/11 Regression] " rguenth at gcc dot gnu.org
@ 2020-07-23 9:08 ` marxin at gcc dot gnu.org
2020-07-23 10:10 ` jamborm at gcc dot gnu.org
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-07-23 9:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2020-07-23
CC| |hubicka at gcc dot gnu.org
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed. With checking enabled WPA is stuck staging from:
r8-1894-g29f1e2b173f1701b(07 Jul 2017 13:28)(hubicka@ucw.cz): [took: 1.445s]
result: FAILED (124)
ipa-comdats.c: Remove optimize check from gate.
* ipa-comdats.c: Remove optimize check from gate.
* ipa-fnsummary.c (ipa_fn_summary_generate): do not generate summary
for functions not optimized.
(ipa_fn_summary_read): Skip optimize check.
(ipa_fn_summary_write): Likewise.
* ipa-inline-analysis.c (do_estimate_growth_1): Check that caller
is optimized.
* ipa-inline.c (can_inline_edge_p): Not optimized functions are
uninlinable.
(can_inline_edge_p): Check flag_pcc_struct_return for match.
(check_callers): Give up on caller which is not optimized.
(inline_small_functions): Likewise.
(ipa_inline): Do not give up when not optimizing.
* ipa-visbility.c (function_and_variable_visibility): Do not optimize
away unoptimizes cdtors.
(whole_program_function_and_variable_visibility): Do
ipa_discover_readonly_nonaddressable_vars in LTO mode.
* ipa.c (process_references): Do not check optimize.
(symbol_table::remove_unreachable_nodes): Update optimize check.
(set_writeonly_bit): Update optimize check.
(pass_ipa_cdtor_merge::gate): Do not check optimize.
(pass_ipa_single_use::gate): Remove.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
2020-07-23 6:00 ` [Bug ipa/96291] [10/11 Regression] " rguenth at gcc dot gnu.org
2020-07-23 9:08 ` marxin at gcc dot gnu.org
@ 2020-07-23 10:10 ` jamborm at gcc dot gnu.org
2020-07-24 12:25 ` romain.geissler at amadeus dot com
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jamborm at gcc dot gnu.org @ 2020-07-23 10:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jamborm at gcc dot gnu.org
--- Comment #2 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I guess I should take a look
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (2 preceding siblings ...)
2020-07-23 10:10 ` jamborm at gcc dot gnu.org
@ 2020-07-24 12:25 ` romain.geissler at amadeus dot com
2020-07-24 18:08 ` slyfox at inbox dot ru
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: romain.geissler at amadeus dot com @ 2020-07-24 12:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
Romain Geissler <romain.geissler at amadeus dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |romain.geissler at amadeus dot com
--- Comment #3 from Romain Geissler <romain.geissler at amadeus dot com> ---
Hi,
FYI, I just tried to build Protobuf 3.12.3 with the trunk from a few days ago,
using "-flto" and I experience similar ICE:
[2020-07-24T12:16:07.637Z] CXXLD protobuf-lite-test
[2020-07-24T12:16:10.993Z] during IPA pass: cp
[2020-07-24T12:16:10.993Z] lto1: internal compiler error: Segmentation fault
[2020-07-24T12:16:15.263Z] 0x9e42da crash_signal
[2020-07-24T12:16:15.263Z] /workdir/src/gcc-11.0.0/gcc/toplev.c:328
[2020-07-24T12:16:15.263Z] 0xfe6b04 has_undead_caller_from_outside_scc_p
[2020-07-24T12:16:15.263Z] /workdir/src/gcc-11.0.0/gcc/ipa-cp.c:5670
[2020-07-24T12:16:15.263Z] 0xf042c0
cgraph_node::call_for_symbol_thunks_and_aliases(bool (*)(cgraph_node*, void*),
void*, bool, bool)
[2020-07-24T12:16:15.263Z] /workdir/src/gcc-11.0.0/gcc/cgraph.c:2450
[2020-07-24T12:16:15.263Z] 0x13130bc identify_dead_nodes
[2020-07-24T12:16:15.263Z] /workdir/src/gcc-11.0.0/gcc/ipa-cp.c:5687
[2020-07-24T12:16:15.263Z] 0x13130bc ipcp_decision_stage
[2020-07-24T12:16:15.263Z] /workdir/src/gcc-11.0.0/gcc/ipa-cp.c:5730
[2020-07-24T12:16:15.263Z] 0x13130bc ipcp_driver
[2020-07-24T12:16:15.263Z] /workdir/src/gcc-11.0.0/gcc/ipa-cp.c:5908
[2020-07-24T12:16:15.263Z] 0x13130bc execute
[2020-07-24T12:16:15.263Z] /workdir/src/gcc-11.0.0/gcc/ipa-cp.c:5999
[2020-07-24T12:16:15.263Z] Please submit a full bug report,
[2020-07-24T12:16:15.263Z] with preprocessed source if appropriate.
[2020-07-24T12:16:15.263Z] Please include the complete backtrace with any bug
report.
[2020-07-24T12:16:15.263Z] See <https://gcc.gnu.org/bugs/> for instructions.
[2020-07-24T12:16:15.263Z] CXXLD protobuf-lite-arena-test
[2020-07-24T12:16:15.263Z] lto-wrapper: fatal error: g++ returned 1 exit status
[2020-07-24T12:16:15.263Z] compilation terminated.
If you have a patch, I can try to test it as well on this Protobuf case.
Cheers,
Romain
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (3 preceding siblings ...)
2020-07-24 12:25 ` romain.geissler at amadeus dot com
@ 2020-07-24 18:08 ` slyfox at inbox dot ru
2020-07-25 11:54 ` slyfox at inbox dot ru
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: slyfox at inbox dot ru @ 2020-07-24 18:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
--- Comment #4 from Sergei Trofimovich <slyfox at inbox dot ru> ---
Peeking at the crash:
"""
Program received signal SIGSEGV, Segmentation fault.
0x0000000001ca0fed in has_undead_caller_from_outside_scc_p
(node=0x7ffff7670438, data=0x0) at ../../gcc/gcc/ipa-cp.c:5670
5670 && !IPA_NODE_REF (cs->caller)->node_dead)
(gdb) list
5665 if (cs->caller->thunk.thunk_p
5666 && cs->caller->call_for_symbol_thunks_and_aliases
5667 (has_undead_caller_from_outside_scc_p, NULL, true))
5668 return true;
5669 else if (!ipa_edge_within_scc (cs)
5670 && !IPA_NODE_REF (cs->caller)->node_dead)
5671 return true;
5672 return false;
5673 }
5674
(gdb) print IPA_NODE_REF(cs->caller)
$1 = (ipa_node_params *) 0x0
"""
Is it an expected invariant? Looks like most of code does not expect NULL
there:
$ git grep IPA_NODE_REF | fgrep NULL
gcc/ipa-prop.c: && IPA_NODE_REF (node) != NULL)
gcc/ipa-prop.c: && IPA_NODE_REF (node) != NULL)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (4 preceding siblings ...)
2020-07-24 18:08 ` slyfox at inbox dot ru
@ 2020-07-25 11:54 ` slyfox at inbox dot ru
2020-07-25 14:09 ` slyfox at inbox dot ru
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: slyfox at inbox dot ru @ 2020-07-25 11:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
--- Comment #5 from Sergei Trofimovich <slyfox at inbox dot ru> ---
I shrunk example to "single-file" (almost) example to ease local tweaking:
$ cat 1file.c
void e(void);
void f(void);
void a(int, int);
void c(int);
#ifdef COMPILE_F1
int b;
void c(int d) {
f();
a(b, 0);
}
void e(void) { c(0); }
#endif
#ifdef COMPILE_F2
void f(void) { c(0); }
#endif
#ifdef COMPILE_F3
void a(int a1, int a2) { e(); }
#endif
$ x86_64-pc-linux-gnu-gcc -c -O2 -flto -o f1.o 1file.c -DCOMPILE_F1
$ x86_64-pc-linux-gnu-gcc -c -O2 -flto -o f2.o 1file.c -DCOMPILE_F2
$ x86_64-pc-linux-gnu-gcc -c -O2 -flto -O0 -o f3.o 1file.c -DCOMPILE_F3
$ x86_64-pc-linux-gnu-gcc -O2 -flto -o sdb f1.o f2.o f3.o
during IPA pass: cp
lto1: internal compiler error: Segmentation fault
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (5 preceding siblings ...)
2020-07-25 11:54 ` slyfox at inbox dot ru
@ 2020-07-25 14:09 ` slyfox at inbox dot ru
2020-07-25 18:37 ` slyfox at inbox dot ru
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: slyfox at inbox dot ru @ 2020-07-25 14:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
--- Comment #6 from Sergei Trofimovich <slyfox at inbox dot ru> ---
-fdump-ipa-all-all generates sdb.wpa.076i.cp that says f() has no jump
functions:
"""
Jump functions:
Jump functions of caller main/9:
Jump functions of caller a/8:
callsite a/8 -> e/2 :
no arg info
Jump functions of caller f/6:
Jump functions of caller e/2:
callsite e/2 -> c/1 :
param 0: CONST: 0
value: 0x0, mask: 0x0
Unknown VR
Jump functions of caller c/1:
callsite c/1 -> a/8 :
param 0: UNKNOWN
value: 0x0, mask: 0xffffffffffffffff
Unknown VR
param 1: UNKNOWN
value: 0x0, mask: 0xffffffffffffffff
Unknown VR
callsite c/1 -> f/6 :
no arg info
"""
Is it expected?
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (6 preceding siblings ...)
2020-07-25 14:09 ` slyfox at inbox dot ru
@ 2020-07-25 18:37 ` slyfox at inbox dot ru
2020-07-27 12:43 ` jamborm at gcc dot gnu.org
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: slyfox at inbox dot ru @ 2020-07-25 18:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
--- Comment #7 from Sergei Trofimovich <slyfox at inbox dot ru> ---
(In reply to Sergei Trofimovich from comment #6)
> -fdump-ipa-all-all generates sdb.wpa.076i.cp that says f() has no jump
> functions:
> ...
> Is it expected?
print_all_lattices() suggests it is expected for unoptimized cases to have no
IPA info:
"""
info = IPA_NODE_REF (node);
/* Skip unoptimized functions and constprop clones since we don't make
lattices for them. */
if (!info || info->ipcp_orig_node)
continue;
"""
The crash happens when analysing a()->e() edge. But a() was compiled with -flto
-O0 and thus has no IPA fnsummary.
Proposed patch: https://gcc.gnu.org/pipermail/gcc-patches/2020-July/550667.html
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (7 preceding siblings ...)
2020-07-25 18:37 ` slyfox at inbox dot ru
@ 2020-07-27 12:43 ` jamborm at gcc dot gnu.org
2020-07-28 22:31 ` cvs-commit at gcc dot gnu.org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jamborm at gcc dot gnu.org @ 2020-07-27 12:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|jamborm at gcc dot gnu.org |slyfox at inbox dot ru
--- Comment #8 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Sergei's patch is correct (I just suggested to write the condition
differently).
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10/11 Regression] -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (8 preceding siblings ...)
2020-07-27 12:43 ` jamborm at gcc dot gnu.org
@ 2020-07-28 22:31 ` cvs-commit at gcc dot gnu.org
2020-08-12 17:11 ` [Bug ipa/96291] [10 Regression] -flto fails as ICE " marxin at gcc dot gnu.org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-07-28 22:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergei Trofimovich <slyfox@gcc.gnu.org>:
https://gcc.gnu.org/g:cbf10ac51c0b889e930f260a3d1fb601332befdf
commit r11-2391-gcbf10ac51c0b889e930f260a3d1fb601332befdf
Author: Sergei Trofimovich <siarheit@google.com>
Date: Sat Jul 25 19:26:50 2020 +0100
ipa/96291: don't crash on unoptimized lto functions
In PR ipa/96291 the test contained an SCC with one
unoptimized function. This tricked ipa-cp into NULL dereference.
has_undead_caller_from_outside_scc_p() did not take into account
that unoptimized funtions don't have IPA summary analysis. And
dereferenced NULL pointer causing an ICE.
gcc/
PR ipa/96291
* ipa-cp.c (has_undead_caller_from_outside_scc_p): Consider
unoptimized callers as undead.
gcc/testsuite/
PR ipa/96291
* gcc.dg/lto/pr96291_0.c: New testcase.
* gcc.dg/lto/pr96291_1.c: Support file.
* gcc.dg/lto/pr96291_2.c: Likewise.
* gcc.dg/lto/pr96291.h: Likewise.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10 Regression] -flto fails as ICE during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (9 preceding siblings ...)
2020-07-28 22:31 ` cvs-commit at gcc dot gnu.org
@ 2020-08-12 17:11 ` marxin at gcc dot gnu.org
2020-08-12 17:40 ` cvs-commit at gcc dot gnu.org
2020-08-12 17:43 ` marxin at gcc dot gnu.org
12 siblings, 0 replies; 14+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-08-12 17:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|slyfox at inbox dot ru |marxin at gcc dot gnu.org
Known to fail| |10.2.1
Summary|[10/11 Regression] -flto |[10 Regression] -flto fails
|fails as "internal compiler |as ICE during IPA pass: cp
|error: Segmentation fault" |incall_for_symbol_thunks_an
|during IPA pass: cp |d_aliases()
|incall_for_symbol_thunks_an |
|d_aliases() |
Known to work| |11.0
--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on master, I'm doing backport to gcc-10 branch right now.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10 Regression] -flto fails as ICE during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (10 preceding siblings ...)
2020-08-12 17:11 ` [Bug ipa/96291] [10 Regression] -flto fails as ICE " marxin at gcc dot gnu.org
@ 2020-08-12 17:40 ` cvs-commit at gcc dot gnu.org
2020-08-12 17:43 ` marxin at gcc dot gnu.org
12 siblings, 0 replies; 14+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-08-12 17:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Martin Liska
<marxin@gcc.gnu.org>:
https://gcc.gnu.org/g:18c81c8a780758ea596c530321ef5e7459b3d16f
commit r10-8613-g18c81c8a780758ea596c530321ef5e7459b3d16f
Author: Sergei Trofimovich <siarheit@google.com>
Date: Sat Jul 25 19:26:50 2020 +0100
ipa/96291: don't crash on unoptimized lto functions
In PR ipa/96291 the test contained an SCC with one
unoptimized function. This tricked ipa-cp into NULL dereference.
has_undead_caller_from_outside_scc_p() did not take into account
that unoptimized funtions don't have IPA summary analysis. And
dereferenced NULL pointer causing an ICE.
gcc/
PR ipa/96291
* ipa-cp.c (has_undead_caller_from_outside_scc_p): Consider
unoptimized callers as undead.
gcc/testsuite/
PR ipa/96291
* gcc.dg/lto/pr96291_0.c: New testcase.
* gcc.dg/lto/pr96291_1.c: Support file.
* gcc.dg/lto/pr96291_2.c: Likewise.
* gcc.dg/lto/pr96291.h: Likewise.
(cherry picked from commit cbf10ac51c0b889e930f260a3d1fb601332befdf)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug ipa/96291] [10 Regression] -flto fails as ICE during IPA pass: cp incall_for_symbol_thunks_and_aliases()
2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
` (11 preceding siblings ...)
2020-08-12 17:40 ` cvs-commit at gcc dot gnu.org
@ 2020-08-12 17:43 ` marxin at gcc dot gnu.org
12 siblings, 0 replies; 14+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-08-12 17:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96291
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on all active branches.
^ permalink raw reply [flat|nested] 14+ messages in thread
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2020-07-22 22:41 [Bug lto/96291] New: -flto fails as "internal compiler error: Segmentation fault" during IPA pass: cp incall_for_symbol_thunks_and_aliases() slyfox at inbox dot ru
2020-07-23 6:00 ` [Bug ipa/96291] [10/11 Regression] " rguenth at gcc dot gnu.org
2020-07-23 9:08 ` marxin at gcc dot gnu.org
2020-07-23 10:10 ` jamborm at gcc dot gnu.org
2020-07-24 12:25 ` romain.geissler at amadeus dot com
2020-07-24 18:08 ` slyfox at inbox dot ru
2020-07-25 11:54 ` slyfox at inbox dot ru
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2020-07-25 18:37 ` slyfox at inbox dot ru
2020-07-27 12:43 ` jamborm at gcc dot gnu.org
2020-07-28 22:31 ` cvs-commit at gcc dot gnu.org
2020-08-12 17:11 ` [Bug ipa/96291] [10 Regression] -flto fails as ICE " marxin at gcc dot gnu.org
2020-08-12 17:40 ` cvs-commit at gcc dot gnu.org
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