https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115865
Bug ID: 115865
Summary: Internal compiler error when ill-formed conversion
from std::initializer_list is attempted
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 when compiled with -fsanitize=address
#include <initializer_list>
int main() {
auto x = { 1, 2, 3 };
int y = x;
}
Using built-in specs.
COLLECT_GCC=/opt/compiler-explorer/gcc-snapshot/bin/g++
Target: x86_64-linux-gnu
Configured with: ../gcc-trunk-20240710/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-0dcfef42df473c60a2343a66d289f7844edaff1e-binutils-2.42
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 15.0.0 20240710 (experimental)
(Compiler-Explorer-Build-gcc-0dcfef42df473c60a2343a66d289f7844edaff1e-binutils-2.42)
COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' '/app/output.s'
'-masm=intel' '-S' '-fsanitize=address' '-v' '-shared-libgcc' '-mtune=generic'
'-march=x86-64' '-dumpdir' '/app/'
/opt/compiler-explorer/gcc-trunk-20240710/bin/../libexec/gcc/x86_64-linux-gnu/15.0.0/cc1plus
-quiet -v -imultiarch x86_64-linux-gnu -iprefix
/opt/compiler-explorer/gcc-trunk-20240710/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 -version
-fdiagnostics-color=always -fsanitize=address -o /app/output.s
GNU C++17
(Compiler-Explorer-Build-gcc-0dcfef42df473c60a2343a66d289f7844edaff1e-binutils-2.42)
version 15.0.0 20240710 (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-20240710/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../x86_64-linux-gnu/include"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20240710/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-20240710/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-20240710/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-20240710/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-20240710/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-20240710/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/15.0.0/include-fixed"
ignoring nonexistent directory
"/opt/compiler-explorer/gcc-trunk-20240710/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-20240710/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0
/opt/compiler-explorer/gcc-trunk-20240710/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0/x86_64-linux-gnu
/opt/compiler-explorer/gcc-trunk-20240710/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/../../../../include/c++/15.0.0/backward
/opt/compiler-explorer/gcc-trunk-20240710/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/include
/opt/compiler-explorer/gcc-trunk-20240710/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/include-fixed/x86_64-linux-gnu
/opt/compiler-explorer/gcc-trunk-20240710/bin/../lib/gcc/x86_64-linux-gnu/15.0.0/include-fixed
/usr/local/include
/opt/compiler-explorer/gcc-trunk-20240710/bin/../lib/gcc/../../include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
Compiler executable checksum: 178af327ff79473fdfbab5491fa6cee9
<source>: In function 'int main()':
<source>:5:17: error: cannot convert 'std::initializer_list<int>' to 'int' in
initialization
5 | int y = x;
| ^
| |
| std::initializer_list<int>
during GIMPLE pass: eh
<source>:3:5: internal compiler error: Segmentation fault
3 | int main() {
| ^~~~
0x26e6a85 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, int, char const*, __va_list_tag (*) [1],
diagnostic_t)
???:0
0x26f4632 internal_error(char const*, ...)
???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
Compiler Explorer link: https://godbolt.org/z/EoPMz5Yc7
