https://bugs.llvm.org/show_bug.cgi?id=41604
Bug ID: 41604
Summary: [msvc compat] clang++ assertion in MergeAccess when
using __super
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: mike.winterb...@gmail.com
CC: llvm-bugs@lists.llvm.org, neeil...@live.com,
richard-l...@metafoo.co.uk
Note: I'm compiling with clang++ from the daily-ish
LLVM-9.0.0-r358402-win64.exe. Perhaps notably, from the nightly .deb
svn359077-1~exp1+0~20190424091502.2471~gbpac4d8e, the assertion isn't hit, but
I'm uncertain if those are compiled with assertions enabled.
When using the __super extension to access a function that is overloaded and
has different access specifiers from a super-super class, the assertion
Assertion failed: DeclAccess != AS_none, file
C:\src\llvm_package_358402\llvm\tools\clang\include\clang/AST/DeclCXX.h, line
1873
is hit.
$ clang++ -fms-extensions super_test.cc
struct A
{
int get_val(int index) const;
private:
int get_val() const;
};
struct B : A
{
};
struct C : B
{
int bob() const;
};
int C::bob() const
{
return __super::get_val(1) + 1;
}
In real life, both get_val's are virtual and get_val(int) is overridden by C so
using __super is "necessary", but that isn't strictly necessary to trigger the
assertion.
Changing C to directly inherit from A instead of B avoids the assertion.
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