https://bugs.llvm.org/show_bug.cgi?id=40030
Bug ID: 40030
Summary: Designated initialisers - diagnose invalid designator
order in C++20
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++2a
Assignee: unassignedclangb...@nondot.org
Reporter: david.bolvan...@gmail.com
CC: blitzrak...@gmail.com, erik.pilking...@gmail.com,
llvm-bugs@lists.llvm.org, richard-l...@metafoo.co.uk
struct S
{
int number;
const char *s;
};
S f()
{
return S{.number = 0, .s = "hi}; // correct order
return S{.s = "hi", .number = 0}; // invalid (out of) order
}
This should not be allowed in C++20 (according to a C++2a standard) and GCC
does not compile it - Clang trunk allows it.
GCC:
error: designator order for field 'S::number' does not match declaration order
in 'S'
12 | return S{.s = "hi", .number = 0};
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