https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81182
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There's something strange about the Debian package then.
$ cat np.cc
struct S
{
int i;
};
template<typename>
struct T
{
auto operator->() { return &s; }
S s;
};
template<typename>
void problem(T<void>& t)
{
t->i;
}
$ ~/gcc/7.1.0/bin/g++ -c -v np.cc
Using built-in specs.
COLLECT_GCC=/home/jwakely/gcc/7.1.0/bin/g++
Target: x86_64-pc-linux-gnu
Configured with: /home/jwakely/src/gcc/gcc-7/configure
--prefix=/home/jwakely/gcc/7.1.0 --enable-libstdcxx-debug --disable-bootstrap
--disable-liboffloadmic --disable-libmpx --disable-libhsail-rt --without-isl
--enable-languages=c,c++
Thread model: posix
gcc version 7.1.0 (GCC)
COLLECT_GCC_OPTIONS='-c' '-v' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/home/jwakely/gcc/7.1.0/libexec/gcc/x86_64-pc-linux-gnu/7.1.0/cc1plus -quiet
-v -D_GNU_SOURCE np.cc -quiet -dumpbase np.cc -mtune=generic -march=x86-64
-auxbase np -version -o /tmp/ccp7MnOW.s
GNU C++14 (GCC) version 7.1.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 6.3.1 20161221 (Red Hat 6.3.1-1), GMP version
6.1.1, MPFR version 3.1.5, MPC version 1.0.2, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory
"/home/jwakely/gcc/7.1.0/lib/gcc/x86_64-pc-linux-gnu/7.1.0/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/home/jwakely/gcc/7.1.0/lib/gcc/x86_64-pc-linux-gnu/7.1.0/../../../../include/c++/7.1.0
/home/jwakely/gcc/7.1.0/lib/gcc/x86_64-pc-linux-gnu/7.1.0/../../../../include/c++/7.1.0/x86_64-pc-linux-gnu
/home/jwakely/gcc/7.1.0/lib/gcc/x86_64-pc-linux-gnu/7.1.0/../../../../include/c++/7.1.0/backward
/home/jwakely/gcc/7.1.0/lib/gcc/x86_64-pc-linux-gnu/7.1.0/include
/usr/local/include
/home/jwakely/gcc/7.1.0/include
/home/jwakely/gcc/7.1.0/lib/gcc/x86_64-pc-linux-gnu/7.1.0/include-fixed
/usr/include
End of search list.
GNU C++14 (GCC) version 7.1.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 6.3.1 20161221 (Red Hat 6.3.1-1), GMP version
6.1.1, MPFR version 3.1.5, MPC version 1.0.2, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 9c4196dd7cfc6b28dfb404cfbddcbfa6
np.cc: In function ‘void problem(T<void>&)’:
np.cc:16:6: error: result of ‘operator->()’ yields non-pointer result
t->i;
^~
