[clang] [Clang] Improve support for expression messages in `static_assert` (PR #73234)
via cfe-commits
cfe-commits at lists.llvm.org
Mon Nov 27 07:24:44 PST 2023
================
@@ -179,18 +179,20 @@ static_assert(false, Message{}); // expected-error {{static assertion failed: He
}
struct MessageInvalidSize {
- constexpr auto size(int) const; // expected-note {{candidate function not viable: requires 1 argument, but 0 were provided}}
- constexpr auto data() const;
+ constexpr unsigned long size(int) const; // expected-note {{'size' declared here}}
+ constexpr const char* data() const;
};
struct MessageInvalidData {
- constexpr auto size() const;
- constexpr auto data(int) const; // expected-note {{candidate function not viable: requires 1 argument, but 0 were provided}}
+ constexpr unsigned long size() const;
+ constexpr const char* data(int) const; // expected-note {{'data' declared here}}
};
static_assert(false, MessageInvalidSize{}); // expected-error {{static assertion failed}} \
- // expected-error {{the message in a static assertion must have a 'size()' member function returning an object convertible to 'std::size_t'}}
+ // expected-error {{the message in a static assertion must have a 'size()' member function returning an object convertible to 'std::size_t'}} \
----------------
cor3ntin wrote:
The only thing that change is that the note previously attached to the declaration of size() is now an error attached to the call site (L195) and the declaration gets a 'declared here' note.
I don't see how we could preserve the previous diagnostics, they all come from deep in overload resolution.
https://github.com/llvm/llvm-project/pull/73234
More information about the cfe-commits
mailing list