https://bugs.llvm.org/show_bug.cgi?id=41598
Bug ID: 41598
Summary: Trailing return type: *this does not bind to base
class reference
Product: clang
Version: 8.0
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: t...@think-cell.com
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
When using *this in the decltype of a trailing return type, clang does not
consider the base class:
struct B {};
int func(B&);
struct D : B {
auto memfunc() -> decltype(func(*this));
};
compiles with gcc and msvc, but fails with clang
(https://godbolt.org/z/oBYlyt):
<source>:5:32: error: no matching function for call to 'func'
auto memfunc() -> decltype(func(*this));
^~~~
<source>:2:5: note: candidate function not viable: cannot convert argument of
incomplete type 'D' to 'B &' for 1st argument
int func(B&);
^
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