https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118962
--- Comment #8 from Rainer <rainer.bitschi at aon dot at> ---
Was using 15.2.0 from winlibs.com
PS C:\temp> g++ .\segfault.cpp -o segfault.exe -mavx512f -v
Using built-in specs.
COLLECT_GCC=C:\Daten\gcc-15.2.0-msvcrt\mingw64\bin\g++.exe
COLLECT_LTO_WRAPPER=C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/15.2.0/lto-wrapper.exe
OFFLOAD_TARGET_NAMES=nvptx-none
Target: x86_64-w64-mingw32
Configured with: ../configure
--prefix=/R/winlibs_staging_msvcrt64/inst_gcc-15.2.0/share/gcc
--build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32
--enable-offload-targets=nvptx-none --with-pkgversion='MinGW-W64
x86_64-msvcrt-posix-seh, built by Brecht Sanders, r1' --with-tune=generic
--enable-checking=release --enable-threads=posix --disable-sjlj-exceptions
--disable-libunwind-exceptions --disable-serial-configure --disable-bootstrap
--enable-host-shared --enable-plugin --disable-default-ssp --disable-rpath
--disable-libstdcxx-debug --disable-version-specific-runtime-libs
--disable-symvers --enable-languages=c,c++,fortran,lto,objc,obj-c++
--disable-gold --disable-nls --disable-stage1-checking --disable-win32-registry
--disable-multilib --enable-ld --enable-libquadmath --enable-libada
--enable-libssp --enable-libstdcxx --enable-lto --enable-fully-dynamic-string
--enable-libgomp --enable-graphite --enable-mingw-wildcard
--enable-libstdcxx-time --enable-libstdcxx-pch
--with-mpc=/c/Prog/winlibs_staging_msvcrt/custombuilt64
--with-mpfr=/c/Prog/winlibs_staging_msvcrt/custombuilt64
--with-gmp=/c/Prog/winlibs_staging_msvcrt/custombuilt64
--with-isl=/c/Prog/winlibs_staging_msvcrt/custombuilt64
--disable-libstdcxx-backtrace --enable-install-libiberty --enable-__cxa_atexit
--without-included-gettext --with-diagnostics-color=auto
--enable-clocale=generic --enable-libgdiagnostics --with-libiconv
--with-system-zlib
--with-build-sysroot=/R/winlibs_staging_msvcrt64/gcc-15.2.0/build_mingw/mingw-w64
CFLAGS='-I/c/Prog/winlibs_staging_msvcrt/custombuilt64/include/libdl-win32
-march=nocona -msahf -mtune=generic -O2 -Wno-error=format'
CXXFLAGS='-Wno-int-conversion -march=nocona -msahf -mtune=generic -O2'
LDFLAGS='-pthread -Wl,--no-insert-timestamp -Wl,--dynamicbase
-Wl,--high-entropy-va -Wl,--nxcompat -Wl,--tsaware'
LD=/c/Prog/winlibs_staging_msvcrt/custombuilt64/share/binutils/bin/ld.exe
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.2.0 (MinGW-W64 x86_64-msvcrt-posix-seh, built by Brecht Sanders,
r1)
COLLECT_GCC_OPTIONS='-o' 'segfault.exe' '-mavx512f' '-v'
'-foffload-options=-l_GCC_stdc++' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/15.2.0/cc1plus.exe
-quiet -v -iprefix
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/
-D_REENTRANT .\segfault.cpp -quiet -dumpbase segfault.cpp -dumpbase-ext .cpp
-mavx512f -mtune=generic -march=x86-64 -version -foffload-options=-l_GCC_stdc++
-o C:\Users\raine\AppData\Local\Temp\ccZaukdw.s
GNU C++17 (MinGW-W64 x86_64-msvcrt-posix-seh, built by Brecht Sanders, r1)
version 15.2.0 (x86_64-w64-mingw32)
compiled by GNU C version 15.2.0, GMP version 6.3.0, MPFR version
4.2.2, MPC version 1.3.1, isl version isl-0.27-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring duplicate directory
"C:/Daten/gcc-15.2.0-msvcrt/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include/c++/15.2.0"
ignoring duplicate directory
"C:/Daten/gcc-15.2.0-msvcrt/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include/c++/15.2.0/x86_64-w64-mingw32"
ignoring duplicate directory
"C:/Daten/gcc-15.2.0-msvcrt/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include/c++/15.2.0/backward"
ignoring duplicate directory
"C:/Daten/gcc-15.2.0-msvcrt/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/include"
ignoring nonexistent directory
"R:/winlibs_staging_msvcrt64/inst_gcc-15.2.0/share/gcc/include"
ignoring nonexistent directory
"/R/winlibs_staging_msvcrt64/inst_gcc-15.2.0/share/gcc/include"
ignoring duplicate directory
"C:/Daten/gcc-15.2.0-msvcrt/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/include-fixed"
ignoring duplicate directory
"C:/Daten/gcc-15.2.0-msvcrt/mingw64/lib/gcc/../../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/include"
ignoring nonexistent directory "/mingw/include"
#include "..." search starts here:
#include <...> search starts here:
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include/c++/15.2.0
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include/c++/15.2.0/x86_64-w64-mingw32
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include/c++/15.2.0/backward
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/include
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../include
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/include-fixed
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/include
End of search list.
Compiler executable checksum: 43a2d58255b90554ada10a53fa1a7228
COLLECT_GCC_OPTIONS='-o' 'segfault.exe' '-mavx512f' '-v'
'-foffload-options=-l_GCC_stdc++' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/bin/as.exe
-v -o C:\Users\raine\AppData\Local\Temp\ccZ6aXLw.o
C:\Users\raine\AppData\Local\Temp\ccZaukdw.s
GNU assembler version 2.45
(x86_64-w64-mingw32) using BFD version (Binutils for MinGW-W64 x86_64, built by
Brecht Sanders, r1) 2.45
COMPILER_PATH=C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/15.2.0/;C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../libexec/gcc/;C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/bin/
LIBRARY_PATH=C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/;C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/;C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/lib/../lib/;C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../lib/;C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/lib/;C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../
COLLECT_GCC_OPTIONS='-o'
'segfault.exe' '-mavx512f' '-v' '-foffload-options=-l_GCC_stdc++'
'-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' 'segfault.'
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/15.2.0/collect2.exe
-plugin
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/15.2.0/liblto_plugin.dll
-plugin-opt=C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/15.2.0/lto-wrapper.exe
-plugin-opt=-fresolution=C:\Users\raine\AppData\Local\Temp\ccdiWlVB.res
-plugin-opt=-pass-through=-lmingw32 -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lmingwex
-plugin-opt=-pass-through=-lmsvcrt -plugin-opt=-pass-through=-lkernel32
-plugin-opt=-pass-through=-lpthread -plugin-opt=-pass-through=-ladvapi32
-plugin-opt=-pass-through=-lshell32 -plugin-opt=-pass-through=-luser32
-plugin-opt=-pass-through=-lkernel32 -plugin-opt=-pass-through=-lmingw32
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lmingwex -plugin-opt=-pass-through=-lmsvcrt
-plugin-opt=-pass-through=-lkernel32 -m i386pep -Bdynamic -o segfault.exe
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/lib/../lib/crt2.o
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/crtbegin.o
-LC:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0
-LC:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc
-LC:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/lib/../lib
-LC:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../lib
-LC:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../../../x86_64-w64-mingw32/lib
-LC:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/../../..
C:\Users\raine\AppData\Local\Temp\ccZ6aXLw.o -lstdc++ -lmingw32 -lgcc_s -lgcc
-lmingwex -lmsvcrt -lkernel32 -lpthread -ladvapi32 -lshell32 -luser32
-lkernel32 -lmingw32 -lgcc_s -lgcc -lmingwex -lmsvcrt -lkernel32
C:/Daten/gcc-15.2.0-msvcrt/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/15.2.0/crtend.o
COLLECT_GCC_OPTIONS='-o' 'segfault.exe' '-mavx512f'
'-v' '-foffload-options=-l_GCC_stdc++' '-shared-libgcc' '-mtune=generic'
'-march=x86-64' '-dumpdir' 'segfault.'
PS C:\temp> gdb
.\segfault.exe
GNU gdb (GDB for
MinGW-W64 x86_64, built by Brecht Sanders, r1) 16.3
Copyright (C) 2024 Free
Software Foundation, Inc.
License GPLv3+: GNU GPL version 3
or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to
change and redistribute it.
There is NO WARRANTY, to the extent permitted by
law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-w64-mingw32".
Type "show configuration" for configuration details.
For bug
reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the
GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for
commands related to "word"...
Reading symbols from .\segfault.exe...
(gdb) r
Starting program: C:\temp\segfault.exe
[New Thread 21228.0x25f4]
[New Thread 21228.0x3fc0]
[New
Thread 21228.0x363c]
Thread 1 received signal
SIGSEGV, Segmentation fault.
0x00007ff7d4f6177b in main ()
