https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96627
Bug ID: 96627
Summary: gcc raises compile-time segmentation fault on <=> =
default
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: poul250 at yandex dot ru
Target Milestone: ---
Hi! I compile this code
#include <iostream>
struct Float {
float value;
constexpr Float(float value) : value (value) {}
constexpr bool operator == (Float other) const noexcept {
return abs(value - other.value) < 0.5;
}
constexpr bool operator != (Float other) const noexcept {
return !(*this == other);
}
constexpr bool operator <=> (const Float& other) const noexcept = default;
};
and I get this message from the compiler
<source>: In member function 'constexpr bool Float::operator<=>(const Float&)
const':
<source>:16:20: internal compiler error: in genericize_spaceship, at
cp/method.c:1053
16 | constexpr bool operator <=> (const Float& other) const noexcept =
default;
| ^~~~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
gcc -v output:
Using built-in specs.
COLLECT_GCC=/opt/compiler-explorer/gcc-snapshot/bin/g++
COLLECT_LTO_WRAPPER=/opt/compiler-explorer/gcc-trunk-20200815/bin/../libexec/gcc/x86_64-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../gcc-trunk-20200815/configure
--prefix=/opt/compiler-explorer/gcc-build/staging --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,d
--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
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20200814 (experimental) (Compiler-Explorer-Build)
COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' './output.s' '-L.'
'-std=c++20' '-v' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir'
'./output.s-'
/opt/compiler-explorer/gcc-trunk-20200815/bin/../libexec/gcc/x86_64-linux-gnu/11.0.0/cc1plus
-quiet -v -imultiarch x86_64-linux-gnu -iprefix
/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/
-D_GNU_SOURCE <source> -quiet -dumpdir ./output.s- -dumpbase example.cpp
-dumpbase-ext .cpp -mtune=generic -march=x86-64 -g -std=c++20 -version
-fdiagnostics-color=always -o /tmp/ccjxATNn.s
GNU C++20 (Compiler-Explorer-Build) version 11.0.0 20200814 (experimental)
(x86_64-linux-gnu)
compiled by GNU C version 7.5.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../x86_64-linux-gnu/include"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../include/c++/11.0.0"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../include/c++/11.0.0/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../include/c++/11.0.0/backward"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/include"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/include-fixed"
ignoring nonexistent directory
"/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../include/c++/11.0.0
/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../include/c++/11.0.0/x86_64-linux-gnu
/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../include/c++/11.0.0/backward
/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/include
/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/include-fixed
/usr/local/include
/opt/compiler-explorer/gcc-trunk-20200815/bin/../lib/gcc/../../include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
GNU C++20 (Compiler-Explorer-Build) version 11.0.0 20200814 (experimental)
(x86_64-linux-gnu)
compiled by GNU C version 7.5.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: a823caeff94dfb060f69c7d6a712edae
You can see this on godbolt https://godbolt.org/z/b6dfK8
