https://bugs.llvm.org/show_bug.cgi?id=52014
Bug ID: 52014
Summary: Bogus "conversion would be valid if it was derived
from" note with const mismatch
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: har...@gigawatt.nl
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
The invalid code
typedef struct S s;
const s *f();
s *g() { return f(); }
results in
test.cc:3:17: error: cannot initialize return object of type 's *' (aka 'S
*') with an rvalue of type 'const s *' (aka 'const S *')
s *g() { return f(); }
^~~
test.cc:1:16: note: 'S' is not defined, but forward declared here; conversion
would be valid if it was derived from 'S'
typedef struct S s;
^
1 error generated.
The error message is correct, but the note is not. The problem here is not
whether S is derived from itself, the problem is just the const mismatch.
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