[Bug c++/110097] Error invalid use of non-static member function

[bmlushma at uwaterloo dot ca via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110097

--- Comment #1 from bmlushma at uwaterloo dot ca  
---
Full -v output:

Using built-in specs.
COLLECT_GCC=g++-11
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/11/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
11.1.0-1ubuntu1~20.04' --with-bugurl=file:///usr/share/doc/gcc-11/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix=/usr
--with-gcc-major-version-only --program-suffix=-11
--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 --disable-cet
--with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none=/build/gcc-11-2V7zgg/gcc-11-11.1.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-11-2V7zgg/gcc-11-11.1.0/debian/tmp-gcn/usr
--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-serialization=2
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.1.0 (Ubuntu 11.1.0-1ubuntu1~20.04)

[Bug c++/110097] New: Error invalid use of non-static member function

[bmlushma at uwaterloo dot ca via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110097

Bug ID: 110097
   Summary: Error invalid use of non-static member function
   Product: gcc
   Version: 11.1.0
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c++
  Assignee: unassigned at gcc dot gnu.org
  Reporter: bmlushma at uwaterloo dot ca
  Target Milestone: ---

Created attachment 55243
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55243=edit
Preprocessed *.i* files

g++-11 -std=c++20 -fmodules-ts test.cc -x c++-system-header iostream

text.cc:

import ;
int main() {
std::istream * infile;
delete infile;
}


This is going to be UB at run-time, but should not produce a compiler error,
let alone the one we got.

Compiler output:

test.cc: In function ‘int main()’:
test.cc:4:12: error: invalid use of non-static member function
‘std::basic_istream<_CharT, _Traits>::~basic_istream() [with _CharT = char;
_Traits = std::char_traits]’
4 | delete infile;
  |^~
In file included from /usr/include/c++/11/iostream:40,
of module /usr/include/c++/11/iostream, imported at test.cc:1:
/usr/include/c++/11/istream:103:7: note: declared here
  103 |   ~basic_istream()
  |   ^