https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120320
Bug ID: 120320 Summary: g++ freezes forever Product: gcc Version: 15.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: gessos.paul at yahoo dot gr Target Milestone: --- Created attachment 61454 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61454&action=edit one .cpp, many .h, one .ii I am trying to compile the included code with this command x86_64-w64-mingw32-g++.exe -pedantic -Wfatal-errors -Wextra -Wall -std=c++26 -fconcepts-diagnostics-depth=10 -fno-rtti -fno-exceptions -Wno-parentheses -fopenmp -g -march=native -Wa,-muse-unaligned-vector-move -m64 test_sparse_matrix.cpp or this g++ -std=c++26 test_sparse_matrix.cpp and g++ freezes forever (forever means > 24 hours) The OS is Windows 11 x64 The g++ -v is: Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=C:/Program\ Files/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/15.1.0/lto-wrapper.exe OFFLOAD_TARGET_NAMES=nvptx-none Target: x86_64-w64-mingw32 Configured with: ../configure --prefix=/R/winlibs_staging_ucrt64/inst_gcc-15.1.0/share/gcc --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --enable-offload-targets=nvptx-none --with-pkgversion='MinGW-W64 x86_64-ucrt-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_ucrt/custombuilt64 --with-mpfr=/c/Prog/winlibs_staging_ucrt/custombuilt64 --with-gmp=/c/Prog/winlibs_staging_ucrt/custombuilt64 --with-isl=/c/Prog/winlibs_staging_ucrt/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_ucrt64/gcc-15.1.0/build_mingw/mingw-w64 CFLAGS='-I/c/Prog/winlibs_staging_ucrt/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_ucrt/custombuilt64/share/binutils/bin/ld.exe Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 15.1.0 (MinGW-W64 x86_64-ucrt-posix-seh, built by Brecht Sanders, r1) Because of freeze, I cannot guarantee that my code is compile-time or runtime correct.