https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108998
--- Comment #1 from waffl3x <waffl3x at protonmail dot com> ---
I ran it on my local system, just to get some line numbers, and I accidentally
ran it on an older version (12.1) and found that it has a similar result, I'm
posting the output of -v and the error of both here. As a reminder, gcc 12.2 on
godbolt does not ICE.
[waffl3x@waffl3x-manjaro-desktop gcc]$ /opt/compiler/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/opt/compiler/bin/g++
COLLECT_LTO_WRAPPER=/opt/compiler/libexec/gcc/x86_64-pc-linux-gnu/13.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-13-20230115/configure --enable-languages=c,c++,lto
--enable-bootstrap --prefix=/opt/compiler --mandir=/usr/share/man
--infodir=/usr/share/info --with-linker-hash-style=gnu --enable-__cxa_atexit
--enable-cet=auto --enable-checking=release --enable-default-pie
--enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object
--enable-link-serialization=1 --enable-linker-build-id --enable-lto
--enable-plugin --enable-shared --enable-threads=posix --disable-libssp
--disable-werror --enable-clocale=gnu --enable-libstdcxx-backtrace
--enable-multilib --disable-libstdcxx-pch --with-build-config=bootstrap-lto
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.0 20230115 (experimental) (GCC)
[waffl3x@waffl3x-manjaro-desktop gcc]$ /opt/compiler/bin/g++ test.cpp
test.cpp: In instantiation of ‘ice<int>(int)::<lambda()> [with int I = 0]’:
test.cpp:11:34: required from ‘void ice(T) [with T = int]’
test.cpp:15:8: required from here
test.cpp:7:10: internal compiler error: in tsubst, at cp/pt.cc:16025
7 | auto aa = a;
| ^~
0x635279 tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:16025
0x8278de tsubst_decl
../../gcc-13-20230115/gcc/cp/pt.cc:15194
0x8302c8 tsubst_copy
../../gcc-13-20230115/gcc/cp/pt.cc:17267
0x8200fc tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:21530
0x8248c8 tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:16547
0x829de5 tsubst_template_args(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:13659
0x821322 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:20299
0x80d340 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:19764
0x80e512 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:18711
0x80e512 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:19041
0x80eb23 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:18711
0x80eb23 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:19105
0x80eb23 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:18711
0x80eb23 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:19105
0x80d0d9 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-13-20230115/gcc/cp/pt.cc:26702
0x80d0d9 instantiate_body
../../gcc-13-20230115/gcc/cp/pt.cc:26702
0x81219d instantiate_decl(tree_node*, bool, bool)
../../gcc-13-20230115/gcc/cp/pt.cc:26992
0x6ffcb3 maybe_instantiate_decl(tree_node*)
../../gcc-13-20230115/gcc/cp/decl2.cc:5448
0x6ffcb3 maybe_instantiate_decl(tree_node*)
../../gcc-13-20230115/gcc/cp/decl2.cc:5435
0x718092 mark_used(tree_node*, int)
../../gcc-13-20230115/gcc/cp/decl2.cc:5747
[waffl3x@waffl3x-manjaro-desktop gcc]$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/12.2.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --enable-bootstrap
--prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--with-build-config=bootstrap-lto --with-linker-hash-style=gnu
--with-system-zlib --enable-__cxa_atexit --enable-cet=auto
--enable-checking=release --enable-clocale=gnu --enable-default-pie
--enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object
--enable-libstdcxx-backtrace --enable-link-serialization=1
--enable-linker-build-id --enable-lto --enable-multilib --enable-plugin
--enable-shared --enable-threads=posix --disable-libssp --disable-libstdcxx-pch
--disable-werror
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.2.1 20230111 (GCC)
[waffl3x@waffl3x-manjaro-desktop gcc]$ g++ test.cpp
test.cpp: In instantiation of ‘ice<int>(int)::<lambda()> [with int I = 0]’:
test.cpp:11:34: required from ‘void ice(T) [with T = int]’
test.cpp:15:8: required from here
test.cpp:7:10: internal compiler error: in tsubst, at cp/pt.cc:15869
7 | auto aa = a;
| ^~
0x19e2ee8 internal_error(char const*, ...)
???:0
0x65443c fancy_abort(char const*, int, char const*)
???:0
0x7e0672 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
???:0
0x7e4429 tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0x7ed512 tsubst_template_args(tree_node*, tree_node*, int, tree_node*)
???:0
0x7e1ab6 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
???:0
0x7db493 instantiate_decl(tree_node*, bool, bool)
???:0
0x6eddcb mark_used(tree_node*, int)
???:0
0x67f26f build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
???:0
0x7e37bd tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
???:0
0x7db493 instantiate_decl(tree_node*, bool, bool)
???:0
0x7f9a73 instantiate_pending_templates(int)
???:0
0x6fe618 c_parse_final_cleanups()
???:0
