https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106341
Bug ID: 106341
Summary: Template argument deduction of template value
parameter crashes compiler
Product: gcc
Version: 10.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lissheidr.spam at gmail dot com
Target Milestone: ---
Created attachment 53313
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53313&action=edit
small example that reproduces the bug
Description:
Compiler segfaults when trying to deduce the template arguments of a template
value
parameter with sufficiently complex nesting.
OS: Ubuntu 22.10
Failing compiler versions: 9.5.0-1ubuntu1, 10.4.0-1ubuntu1, 11.1 (x86_64 via
godbolt.org)
Working compiler versions: 11.3.0-4ubuntu1 and up don't seem to segfault
Compiler arguments: -std=c++2a
g++-10 -v:
Using built-in specs.
COLLECT_GCC=g++-10
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/10/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 10.4.0-1ubuntu1'
--with-bugurl=file:///usr/share/doc/gcc-10/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix=/usr
--with-gcc-major-version-only --program-suffix=-10
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib
--enable-libphobos-checking=release --with-target-system-zlib=auto
--enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--with-tune=generic --enable-offload-targets=hsa --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu --with-build-config=bootstrap-lto-lean
--enable-link-mutex
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.4.0 (Ubuntu 10.4.0-1ubuntu1)
