[Bug other/96927] New: [11 regression] ICE in libstdc++-v3/include/chrono:442

[Bug other/96927] New: [11 regression] ICE in libstdc++-v3/include/chrono:442

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96927

            Bug ID: 96927
           Summary: [11 regression]  ICE in
                    libstdc++-v3/include/chrono:442
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

I am seeing ICEs in some of the C++ conformance tests with a bootstrap build. 
I think they are all like the following.  I am not sure what exact revision
caused them as they do not occur with every run nor on every system but it is
in the range r11-2828 to r11-2985.  I'll try to narrow it down a bit.


seurer@makalu-lp1:~/gcc/git/build/gcc-test$
/home/seurer/gcc/git/build/gcc-trunk-bootstrap/./gcc/xg++ -shared-libgcc
-B/home/seurer/gcc/git/build/gcc-trunk-bootstrap/./gcc -nostdinc++
-L/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/src
-L/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/src/.libs
-L/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-B/home/seurer/gcc/git/install/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/bin/
-B/home/seurer/gcc/git/install/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/lib/
-isystem
/home/seurer/gcc/git/install/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/include
-isystem
/home/seurer/gcc/git/install/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/sys-include
-fchecking=1
-B/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/./libstdc++-v3/src/.libs
-fmessage-length=0 -fno-show-column -ffunction-sections -fdata-sections -g -O2
-D_GNU_SOURCE -DLOCALEDIR="." -nostdinc++
-I/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include/powerpc64-unknown-linux-gnu
-I/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include
-I/home/seurer/gcc/git/gcc-trunk-bootstrap/libstdc++-v3/libsupc++
-I/home/seurer/gcc/git/gcc-trunk-bootstrap/libstdc++-v3/include/backward
-I/home/seurer/gcc/git/gcc-trunk-bootstrap/libstdc++-v3/testsuite/util
/home/seurer/gcc/git/gcc-trunk-bootstrap/libstdc++-v3/testsuite/20_util/is_empty/value.cc
-include bits/stdc++.h -fdiagnostics-plain-output -S -o value.s
In file included from
/home/seurer/gcc/git/gcc-trunk-bootstrap/libstdc++-v3/include/precompiled/stdc++.h:101:
/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include/chrono:
In substitution of 'template<class _Rep2, class _Period2, class> constexpr
std::chrono::duration<long int, std::ratio<1, 1000000000> >::duration(const
std::chrono::duration<_Rep1, _Period1>&) [with _Rep2 = long int; _Period2 =
std::ratio<1>; <template-parameter-1-3> = <missing>]':
/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include/chrono:614:
  required from 'constexpr typename
std::common_type<std::chrono::duration<_Rep1, _Period1>,
std::chrono::duration<_Rep2, _Period2> >::type std::chrono::operator-(const
std::chrono::duration<_Rep1, _Period1>&, const std::chrono::duration<_Rep2,
_Period2>&) [with _Rep1 = long int; _Period1 = std::ratio<1, 1000000000>; _Rep2
= long int; _Period2 = std::ratio<1>; typename
std::common_type<std::chrono::duration<_Rep1, _Period1>,
std::chrono::duration<_Rep2, _Period2> >::type = std::chrono::duration<long
int, std::ratio<1, 1000000000> >]'
/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include/chrono:975:
  required from 'constexpr std::chrono::time_point<_Clock, typename
std::common_type<_Dur1, std::chrono::duration<_Rep2, _Period2> >::type>
std::chrono::operator-(const std::chrono::time_point<_Clock, _Duration1>&,
const std::chrono::duration<_Rep2, _Period2>&) [with _Clock =
std::filesystem::__file_clock; _Dur1 = std::chrono::duration<long int,
std::ratio<1, 1000000000> >; _Rep2 = long int; _Period2 = std::ratio<1>;
typename std::common_type<_Dur1, std::chrono::duration<_Rep2, _Period2> >::type
= std::chrono::duration<long int, std::ratio<1, 1000000000> >]'
/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include/chrono:3254:
  required from 'static std::chrono::time_point<std::filesystem::__file_clock,
_Dur> std::filesystem::__file_clock::_S_from_sys(const
std::chrono::time_point<std::chrono::_V2::system_clock, _Dur2>&) [with _Dur =
std::chrono::duration<long int, std::ratio<1, 1000000000> >]'
/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include/chrono:3221:
  required from here
/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include/chrono:441:
  in 'constexpr' expansion of 'std::chrono::duration<long int, std::ratio<1,
1000000000> >::_S_gcd(((intmax_t)std::ratio<1>::den), ((intmax_t)std::ratio<1,
1000000000>::den))'
/home/seurer/gcc/git/build/gcc-trunk-bootstrap/powerpc64-unknown-linux-gnu/libstdc++-v3/include/chrono:442:
internal compiler error: Segmentation fault
0x10df176b crash_signal
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/toplev.c:327
0x102aed7c cxx_eval_call_expression
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/constexpr.c:2622
0x102b131f cxx_eval_constant_expression
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/constexpr.c:5765
0x102b52f7 cxx_eval_outermost_constant_expr
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/constexpr.c:6772
0x102bbaf7 maybe_constant_value(tree_node*, tree_node*, bool)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/constexpr.c:7045
0x103bf65f fold_for_warn(tree_node*)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/expr.c:418
0x105ff317 cp_build_binary_op(op_location_t const&, tree_code, tree_node*,
tree_node*, int)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/typeck.c:4741
0x1025e337 build_new_op_1
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/call.c:6555
0x1025f143 build_new_op(op_location_t const&, tree_code, int, tree_node*,
tree_node*, tree_node*, tree_node**, int)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/call.c:6601
0x105e76bf build_x_binary_op(op_location_t const&, tree_code, tree_node*,
tree_code, tree_node*, tree_code, tree_node**, int)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/typeck.c:4287
0x104f6e03 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:19576
0x104f6d37 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:19568
0x1050bc5b tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:18879
0x1052778f tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:17933
0x1052778f tsubst_template_arg(tree_node*, tree_node*, int, tree_node*)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:12162
0x1052778f tsubst_template_arg(tree_node*, tree_node*, int, tree_node*)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:12150
0x105278f3 tsubst_template_args(tree_node*, tree_node*, int, tree_node*)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:13215
0x1052281f tsubst_aggr_type
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:13418
0x104f59b3 tsubst_qualified_id
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:16199
0x104f8f43 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /home/seurer/gcc/git/gcc-trunk-bootstrap/gcc/cp/pt.c:19605


On one system it affected all of these:

FAIL: 20_util/common_type/requirements/sfinae_friendly_2.cc (test for excess
errors)
FAIL: 20_util/is_empty/value.cc (test for excess errors)
FAIL: 20_util/tuple/56785.cc (test for excess errors)
FAIL: 20_util/tuple/cons/element_accepts_anything_byval.cc (test for excess
errors)
FAIL: 21_strings/basic_string/allocator/char/noexcept.cc (test for excess
errors)
FAIL: 23_containers/map/modifiers/insert/87194.cc (test for excess errors)
FAIL: 23_containers/multimap/init-list.cc (test for excess errors)
FAIL: 23_containers/multimap/modifiers/emplace/1.cc (test for excess errors)
FAIL: 23_containers/multimap/modifiers/insert/87194.cc (test for excess errors)
FAIL: 23_containers/multiset/debug/move_assign_neg.cc (test for excess errors)
FAIL: 23_containers/unordered_map/allocator/copy.cc (test for excess errors)
FAIL: 23_containers/unordered_map/allocator/copy_assign.cc (test for excess
errors)
FAIL: 23_containers/unordered_map/allocator/minimal.cc (test for excess errors)
FAIL: 23_containers/unordered_multimap/erase/51845-multimap.cc (test for excess
errors)
FAIL: 23_containers/unordered_multimap/insert/multimap_single_move-1.cc (test
for excess errors)
FAIL: 23_containers/unordered_multimap/operations/count.cc (test for excess
errors)
FAIL: 23_containers/unordered_multimap/operators/1.cc (test for excess errors)
FAIL: 23_containers/unordered_multimap/operators/2.cc (test for excess errors)
FAIL: 23_containers/unordered_set/allocator/move.cc (test for excess errors)
FAIL: 30_threads/shared_future/cons/assign.cc (test for excess errors)
FAIL: 30_threads/this_thread/58038.cc (test for excess errors)
FAIL: tr1/4_metaprogramming/has_nothrow_assign/value.cc (test for excess
errors)
FAIL: tr1/4_metaprogramming/has_nothrow_copy/value.cc (test for excess errors)
FAIL: tr1/4_metaprogramming/has_trivial_assign/value.cc (test for excess
errors)
FAIL: tr1/4_metaprogramming/has_trivial_copy/value.cc (test for excess errors)
FAIL: tr1/4_metaprogramming/is_empty/value.cc (test for excess errors)
FAIL: tr1/6_containers/headers/unordered_map/synopsis.cc (test for excess
errors)
FAIL: tr1/6_containers/headers/unordered_set/synopsis.cc (test for excess
errors)
FAIL: tr1/6_containers/tuple/cons/big_tuples.cc (test for excess errors)
FAIL: tr1/6_containers/tuple/cons/constructor.cc (test for excess errors)
FAIL: tr1/6_containers/unordered_map/24064.cc (test for excess errors)
FAIL: tr1/6_containers/unordered_map/requirements/iterator_neg.cc (test for
excess errors)
FAIL: tr1/6_containers/unordered_map/requirements/iterator_null_neg.cc (test
for excess errors)
FAIL: tr1/6_containers/unordered_map/requirements/typedefs.cc (test for excess
errors)
FAIL: tr1/6_containers/unordered_multimap/requirements/iterator_neg.cc (test
for excess errors)
FAIL: tr1/6_containers/unordered_multimap/requirements/iterator_null_neg.cc
(test for excess errors)
FAIL: tr1/6_containers/unordered_multimap/requirements/typedefs.cc (test for
excess errors)
FAIL: tr1/6_containers/unordered_multiset/24054.cc (test for excess errors)
FAIL: tr1/6_containers/unordered_multiset/erase/1.cc (test for excess errors)
FAIL: tr1/6_containers/unordered_multiset/erase/24061-multiset.cc (test for
excess errors)
FAIL: tr1/6_containers/unordered_multiset/insert/24061-multiset.cc (test for
excess errors)
FAIL: tr1/6_containers/unordered_multiset/insert/multiset_single.cc (test for
excess errors)
FAIL:
tr1/6_containers/unordered_multiset/requirements/explicit_instantiation.cc
(test for excess errors)
FAIL: tr1/6_containers/unordered_multiset/requirements/iterator_neg.cc (test
for excess errors)
FAIL: tr1/6_containers/unordered_multiset/requirements/iterator_null_neg.cc
(test for excess errors)
FAIL: tr1/6_containers/unordered_multiset/requirements/typedefs.cc (test for
excess errors)
FAIL: tr1/6_containers/unordered_set/23053.cc (test for excess errors)
FAIL: tr1/6_containers/unordered_set/26127.cc (test for excess errors)
FAIL: tr1/6_containers/unordered_set/insert/24061-set.cc (test for excess
errors)
FAIL: tr1/6_containers/unordered_set/insert/set_range.cc (test for excess
errors)
FAIL: tr1/6_containers/unordered_set/requirements/explicit_instantiation.cc
(test for excess errors)
FAIL: tr1/6_containers/unordered_set/requirements/iterator_neg.cc (test for
excess errors)
FAIL: tr1/6_containers/unordered_set/requirements/iterator_null_neg.cc (test
for excess errors)
FAIL:
tr1/6_containers/unordered_set/requirements/iterators_default_constructor.cc
(test for excess errors)
FAIL: tr1/6_containers/unordered_set/requirements/typedefs.cc (test for excess
errors)

[Bug other/96927] [11 regression] ICE in libstdc++-v3/include/chrono:442

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96927

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Looks like PR96901 to me.

[Bug other/96927] [11 regression] ICE in libstdc++-v3/include/chrono:442

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96927

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |11.0

[Bug other/96927] [11 regression] ICE in libstdc++-v3/include/chrono:442

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96927

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2020-10-16

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
https://gcc.gnu.org/pipermail/gcc-testresults/2020-October/609403.html doesn't
see any of those, so fixed?

[Bug other/96927] [11 regression] ICE in libstdc++-v3/include/chrono:442

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96927

seurer at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from seurer at gcc dot gnu.org ---
I haven't seen these in a while so it does look like whatever was fixed.