https://bugs.llvm.org/show_bug.cgi?id=50779
Bug ID: 50779
Summary: regression Clang >= 11 rejects consteval subscript
operator use
Product: clang
Version: 11.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++2a
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected]
This is a regression between versions 10.0.1 and 11.0.0
https://godbolt.org/z/dcnbbcKqs
struct test
{
consteval int operator[](int i) const { return {}; }
};
constexpr test a{};
constexpr int s = a.operator[](1); // accept direct call
constexpr int t = a[1]; // REJECT
error: cannot take address of consteval function 'operator[]'
outside of an immediate invocation:
constexpr int t = a[1];
^
Works on GCC >=10.2 but ICE'd 10.1 (which introduced consteval)
internal compiler error: in extract_call_expr, at cp/call.c:6614
13 | constexpr int t = a[1];
| ^
Works on MSVC >= v19.28 (which introduced consteval)
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