https://bugs.llvm.org/show_bug.cgi?id=40744
Bug ID: 40744
Summary: [RFE] allow offsetof() in constexpr
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
The below examples reject:
struct A {
char a;
static constexpr int b = offsetof(A, a);
};
struct A {
char a;
B<offsetof(A, a)> b;
};
And there seem to be no easy work-around.
On stackoverflow people suggest the reinterpret_cast-based
solutions, which are illegal in constexpr too.
Is there anything in standard, that makes this code invalid?
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