================
@@ -6472,7 +6494,20 @@ void CXXNameMangler::mangleValueInTemplateArg(QualType
T, const APValue &V,
Out << "plcvPcad";
Kind = Offset;
} else {
- if (!V.getLValuePath().empty() || V.isLValueOnePastTheEnd()) {
+ // Clang 11 and before mangled an array subject to array-to-pointer decay
+ // as if it were the declaration itself.
+ bool IsArrayToPointerDecayMangledAsDecl = false;
+ if (TopLevel && Ctx.getLangOpts().getClangABICompat() <=
+ LangOptions::ClangABI::Ver11) {
+ QualType BType = B.getType();
+ IsArrayToPointerDecayMangledAsDecl =
+ BType->isArrayType() && V.getLValuePath().size() == 1 &&
+ V.getLValuePath()[0].getAsArrayIndex() == 0 &&
+ Ctx.hasSimilarType(T, Ctx.getDecayedType(BType));
+ }
+
----------------
AaronBallman wrote:
Thank you for the details!
https://github.com/llvm/llvm-project/pull/78041
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