================
@@ -260,6 +260,11 @@ static void CheckStringInit(Expr *Str, QualType &DeclT,
const ArrayType *AT,
diag::ext_initializer_string_for_char_array_too_long)
<< Str->getSourceRange();
else if (StrLength - 1 == ArrayLen) {
+ // If the string literal is null-terminated explicitly, e.g., `char a[4]
=
+ // "ABC\0"`, there should be no warn:
+ if (const auto *SL = dyn_cast<StringLiteral>(Str->IgnoreParens()))
+ if (SL->isOrdinary() && SL->getBytes().back() == 0)
----------------
AaronBallman wrote:
Also, this means the functionality only works for `char` and not other string
types. I would imagine we'd want to also support: `wchar_t foo[4] = { L'f',
L'o', L'o', L'\0' };` and other variants.
https://github.com/llvm/llvm-project/pull/143487
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