[PATCH] D153702: [Clang] Implement P2738R1 - constexpr cast from void*
Corentin Jabot via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Thu Jun 29 01:49:22 PDT 2023
cor3ntin added inline comments.
================
Comment at: clang/test/CXX/expr/expr.const/p5-26.cpp:13
+ (void)static_cast<T*>(a); //cxx23-note {{cast from 'void *' is not allowed in a constant expression in C++ standards before C++2c}}
+ (void)static_cast<const T*>(a);
+ (void)static_cast<volatile T*>(a);
----------------
shafik wrote:
> Why no diagnostic on this line and the next?
Why do you expect one?
you can add const/volatile (but not remove const) in a static_cast https://godbolt.org/z/qEqoEWohc
In c++23, no diag because we stop evaluating the function at that point.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D153702/new/
https://reviews.llvm.org/D153702
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