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From: "sam at gentoo dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/105931] [12 regression] ICE in cxx_eval_constant_expression
Date: Sun, 12 Jun 2022 04:50:01 +0000 [thread overview]
Message-ID: <bug-105931-4-pz3gsvIArp@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-105931-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105931
--- Comment #2 from Sam James <sam at gentoo dot org> ---
Interesting!
The minimised version of this is:
```
$ cat test.cxx
template <unsigned ElemSize> decltype(0 % ElemSize == 0)
```
```
$ g++ -o test.o -c -O2 test.cxx
new.cxx:1:52: internal compiler error: unexpected expression ‘ElemSize’ of kind
template_parm_index
1 | template <unsigned ElemSize> decltype(0 % ElemSize == 0)
| ~~~~~~~~~~~~~^~~~
0x6def33 cxx_eval_constant_expression
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/constexpr.cc:7587
0x6df310 cxx_eval_outermost_constant_expr
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/constexpr.cc:7824
0x6e154d potential_constant_expression_1
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/constexpr.cc:9274
0x6e1ef5 potential_constant_expression_1(tree_node*, bool, bool, bool, int)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/constexpr.cc:9550
0x6e1ef5 is_constant_expression(tree_node*)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/constexpr.cc:9607
0x6e1ef5 is_nondependent_constant_expression(tree_node*)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/constexpr.cc:9644
0x6e2b04 maybe_constant_value(tree_node*, tree_node*, bool)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/constexpr.cc:8071
0x74e35b fold_for_warn(tree_node*)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/expr.cc:416
0x8c9552 shorten_compare(unsigned int, tree_node**, tree_node**, tree_node**,
tree_code*)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/c-family/c-common.cc:3237
0x889d72 cp_build_binary_op(op_location_t const&, tree_code, tree_node*,
tree_node*, int)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/typeck.cc:6158
0x6bd96c build_new_op(op_location_t const&, tree_code, int, tree_node*,
tree_node*, tree_node*, tree_node*, tree_node**, int)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/call.cc:6935
0x88041b build_x_binary_op(op_location_t const&, tree_code, tree_node*,
tree_code, tree_node*, tree_code, tree_node*, tree_node**, int)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/typeck.cc:4563
0x81f7e7 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/pt.cc:20369
0x82337a instantiate_non_dependent_expr_internal(tree_node*, int)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/pt.cc:6367
0x82337a instantiate_non_dependent_expr_sfinae(tree_node*, int)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/pt.cc:6388
0x85eec3 finish_decltype_type(tree_node*, bool, int)
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/semantics.cc:11255
0x7e183f cp_parser_decltype
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/parser.cc:16540
0x7fa3e7 cp_parser_simple_type_specifier
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/parser.cc:19647
0x7d6cbd cp_parser_type_specifier
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/parser.cc:19424
0x7d7d81 cp_parser_decl_specifier_seq
/usr/src/debug/sys-devel/gcc-12.1.1_p20220611/gcc-12-20220611/gcc/cp/parser.cc:15905
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
```
This minimised version is only slightly different to the one in the original
bug.
next prev parent reply other threads:[~2022-06-12 4:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-12 0:14 [Bug c++/105931] New: " sam at gentoo dot org
2022-06-12 0:15 ` [Bug c++/105931] " sam at gentoo dot org
2022-06-12 4:50 ` sam at gentoo dot org [this message]
2022-06-12 16:42 ` [Bug c++/105931] [12/13 " pinskia at gcc dot gnu.org
2022-06-12 16:47 ` pinskia at gcc dot gnu.org
2022-06-13 13:01 ` mpolacek at gcc dot gnu.org
2022-06-17 7:37 ` pinskia at gcc dot gnu.org
2022-06-19 19:01 ` ppalka at gcc dot gnu.org
2022-06-23 20:38 ` cvs-commit at gcc dot gnu.org
2022-06-24 13:21 ` cvs-commit at gcc dot gnu.org
2022-06-24 13:31 ` ppalka at gcc dot gnu.org
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