https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116960
Bug ID: 116960
Summary: ICE: Error reporting routines re-entered
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eczbek.void at gmail dot com
Target Milestone: ---
This causes an ICE, but should just error:
```
template<auto>
using Foo = decltype([](auto) { return 0; }(0));
template<typename...>
Foo<[] {}> foo() {
[]() {
return Foo<[] {}>();
};
}
int main() {
foo();
}
```
Using built-in specs.
COLLECT_GCC=/opt/compiler-explorer/gcc-snapshot/bin/g++
Target: x86_64-linux-gnu
Configured with: ../gcc-trunk-20241003/configure
--prefix=/opt/compiler-explorer/gcc-build/staging
--enable-libstdcxx-backtrace=yes --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu --disable-bootstrap
--enable-multiarch --with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --enable-clocale=gnu
--enable-languages=c,c++,fortran,ada,objc,obj-c++,go,d,rust,m2 --enable-ld=yes
--enable-gold=yes --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--enable-linker-build-id --enable-lto --enable-plugins --enable-threads=posix
--with-pkgversion=Compiler-Explorer-Build-gcc-1d09117830f97053ea78a505c31d5ee0558fa4bf-binutils-2.42
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 15.0.0 20241003 (experimental)
(Compiler-Explorer-Build-gcc-1d09117830f97053ea78a505c31d5ee0558fa4bf-binutils-2.42)
COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' '/app/output.s'
'-masm=intel' '-fno-verbose-asm' '-S' '-std=c++20' '-freport-bug' '-v'
'-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' '/app/'
/opt/compiler-explorer/gcc-trunk-20241003/bin/../libexec/gcc/x86_64-linux-gnu/15.0.0/cc1plus
-quiet -v -imultiarch x86_64-linux-gnu -iprefix
/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/
-D_GNU_SOURCE <source> -quiet -dumpdir /app/ -dumpbase output.cpp -dumpbase-ext
.cpp -masm=intel -mtune=generic -march=x86-64 -g -std=c++20 -version
-fdiagnostics-color=always -fno-verbose-asm -freport-bug -o /app/output.s
GNU C++20
(Compiler-Explorer-Build-gcc-1d09117830f97053ea78a505c31d5ee0558fa4bf-binutils-2.42)
version 15.0.0 20241003 (experimental) (x86_64-linux-gnu)
compiled by GNU C version 11.4.0, GMP version 6.2.1, MPFR version
4.1.0, MPC version 1.2.1, isl version isl-0.24-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../x86_64-linux-gnu/include"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0/backward"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.0/include"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.0/include-fixed/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.0/include-fixed"
ignoring nonexistent directory
"/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0
/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0/x86_64-linux-gnu
/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0/backward
/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/include
/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/include-fixed/x86_64-linux-gnu
/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/include-fixed
/usr/local/include
/opt/compiler-explorer/gcc-trunk-20241003/bin/../lib/gcc/../../include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
Compiler executable checksum: 11e8fc28ec87a5f29a8b07eaf31cb16b
internal compiler error: error reporting routines re-entered.
0x283ad0f diagnostic_context::report_diagnostic(diagnostic_info*)
???:0
0x283b145 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x284cd90 warning(diagnostic_option_id, char const*, ...)
???:0
0xb5576d start_preparsed_function(tree_node*, tree_node*, int)
???:0
0xbbbe19 start_lambda_function(tree_node*, tree_node*)
???:0
0xcc503d tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
???:0
0xcd2af8 tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0xce6950 instantiate_template(tree_node*, tree_node*, int)
???:0
0xcd2194 tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0x2871323 pretty_printer::format(text_info&)
???:0
0x28768f3 pp_verbatim(pretty_printer*, char const*, ...)
???:0
0x284b954 diagnostic_text_output_format::on_report_diagnostic(diagnostic_info
const&, diagnostic_t)
???:0
0x283ae75 diagnostic_context::report_diagnostic(diagnostic_info*)
???:0
0x283b145 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x284cfee warning_at(rich_location*, diagnostic_option_id, char const*, ...)
???:0
0xb73b92 finish_function(bool)
???:0
0xcbca5d instantiate_decl(tree_node*, bool, bool)
???:0
0xcf738b instantiate_pending_templates(int)
???:0
0xb8cfcb c_parse_final_cleanups()
???:0
0xdec7f8 c_common_parse_file()
???:0
Please submit a full bug report, with preprocessed source.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Preprocessed source stored into /tmp/cciuRv4X.out file, please attach this to
your bugreport.
Compiler returned: 1
Compiler Explorer link: https://godbolt.org/z/8EK1151WW
I'm not sure how to find that preprocessed file.
