https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119175
Bug ID: 119175
Summary: ICE segfault on lambda in requires clause of generic
lambda in requires clause
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: ---
https://godbolt.org/z/5ar46j7hs
```
template<int = 0>
void from() requires requires {
[]<int> requires requires {
[] {};
} {};
} {}
int main() {
from();
}
```
```
Using built-in specs.
COLLECT_GCC=/opt/compiler-explorer/gcc-snapshot/bin/g++
Target: x86_64-linux-gnu
Configured with: ../gcc-trunk-20250309/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-e270b8997854d56e8e8536fd1126de7541e3d826-binutils-2.42
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 15.0.1 20250309 (experimental)
(Compiler-Explorer-Build-gcc-e270b8997854d56e8e8536fd1126de7541e3d826-binutils-2.42)
COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' '/app/output.s'
'-masm=intel' '-fno-verbose-asm' '-S' '-std=c++20' '-v' '-freport-bug'
'-isystem' '/opt/compiler-explorer/libs/xieite/main/include' '-shared-libgcc'
'-mtune=generic' '-march=x86-64' '-dumpdir' '/app/'
/opt/compiler-explorer/gcc-trunk-20250309/bin/../libexec/gcc/x86_64-linux-gnu/15.0.1/cc1plus
-quiet -v -imultiarch x86_64-linux-gnu -iprefix
/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/x86_64-linux-gnu/15.0.1/
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-quiet -dumpdir /app/ -dumpbase output.cpp -dumpbase-ext .cpp -masm=intel
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GNU C++20
(Compiler-Explorer-Build-gcc-e270b8997854d56e8e8536fd1126de7541e3d826-binutils-2.42)
version 15.0.1 20250309 (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-20250309/bin/../lib/gcc/x86_64-linux-gnu/15.0.1/../../../../x86_64-linux-gnu/include"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.1/../../../../include/c++/15.0.1"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.1/../../../../include/c++/15.0.1/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.1/../../../../include/c++/15.0.1/backward"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.1/include"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.1/include-fixed/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.1/include-fixed"
ignoring nonexistent directory
"/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.1/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/compiler-explorer/libs/xieite/main/include
/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/x86_64-linux-gnu/15.0.1/../../../../include/c++/15.0.1
/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/x86_64-linux-gnu/15.0.1/../../../../include/c++/15.0.1/x86_64-linux-gnu
/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/x86_64-linux-gnu/15.0.1/../../../../include/c++/15.0.1/backward
/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/x86_64-linux-gnu/15.0.1/include
/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/x86_64-linux-gnu/15.0.1/include-fixed/x86_64-linux-gnu
/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/x86_64-linux-gnu/15.0.1/include-fixed
/usr/local/include
/opt/compiler-explorer/gcc-trunk-20250309/bin/../lib/gcc/../../include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
Compiler executable checksum: 6cc9d6fb3abe080040e1197775450931
g++: internal compiler error: Segmentation fault signal terminated program
cc1plus
Please submit a full bug report, with preprocessed source.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 4
```
