tbaeder added inline comments.
================
Comment at: clang/test/AST/Interp/builtin-functions.cpp:53
+ constexpr char f[] = {'0', 'x', 'A', 'E', '\0'};
+ constexpr double NaN6 = __builtin_nan(f); // ref-error {{must be initialized
by a constant expression}}
+
----------------
aaron.ballman wrote:
> This should be accepted, shouldn't it? The payload is a valid integer
> constant (as a string).
So answer both your questions: Yes, but the current interpreter has a
`isa<StringLiteral>()` check and rejects everything that isn't a string literal.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D155356/new/
https://reviews.llvm.org/D155356
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