https://bugs.llvm.org/show_bug.cgi?id=35327
Bug ID: 35327
Summary: constexpr initialization with reinterpret_cast
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: ivan.donchevs...@qt.io
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
By standard it should not be possible but msvc (at least 2015 and 2017)
compiles fine with that. clang-cl fails trying to compile the same code.
Can be noticed in offsetof calls or similar declarations.
Example:
#define my_offsetof(s,m) ((int)&reinterpret_cast<char const
volatile&>((((s*)0)->m)))
struct Foo { int Bar;};
static constexpr int offset= my_offsetof(Foo, Bar);
This code compiles fine with cl but fails with clang-cl
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