Wandbox

Ran/Viewed Log

Language

C++

Compiler

clang HEAD 12.0.0 (https://github.com/llvm/llvm-project.git 9087209314caafed4b232d4a66287f2d16054ad3)

Options

Warnings

Boost 1.73.0

C++2a

no pedantic

$ clang++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/clang-head/include -std=c++2a

prog.cc:37:12: error: no viable conversion from 'Ptr<I1>' to 'Ptr<I2>'
   Ptr<I2> p2 = p1;   // C4928
           ^    ~~
prog.cc:18:8: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'Ptr<I1>' to 'const Ptr<I2> &' for 1st argument
struct Ptr
       ^
prog.cc:18:8: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'Ptr<I1>' to 'Ptr<I2> &&' for 1st argument
struct Ptr
       ^
prog.cc:29:4: note: candidate constructor not viable: no known conversion from 'Ptr<I1>' to 'I *' for 1st argument
   Ptr(I*)
   ^
prog.cc:20:4: note: candidate function
   operator T*()
   ^
1 error generated.

Exit Code:

1