return SourceLocation();
}
+static unsigned RankDeductionFailure(
+ const OverloadCandidate::DeductionFailureInfo &DFI) {
+ switch (DFI.Result) {
+ case Sema::TDK_Success:
+ case Sema::TDK_Incomplete:
+ return 1;
+
+ case Sema::TDK_Underqualified:
+ case Sema::TDK_Inconsistent:
+ return 2;
+
+ case Sema::TDK_SubstitutionFailure:
+ case Sema::TDK_NonDeducedMismatch:
+ return 3;
+
+ case Sema::TDK_InstantiationDepth:
+ case Sema::TDK_FailedOverloadResolution:
+ return 4;
+
+ case Sema::TDK_InvalidExplicitArguments:
+ return 5;
+
+ case Sema::TDK_TooManyArguments:
+ case Sema::TDK_TooFewArguments:
+ return 6;
+ }
+}
+
struct CompareOverloadCandidatesForDisplay {
Sema &S;
CompareOverloadCandidatesForDisplay(Sema &S) : S(S) {}
} else if (R->FailureKind == ovl_fail_bad_conversion)
return false;
+ if (L->FailureKind == ovl_fail_bad_deduction) {
+ if (R->FailureKind != ovl_fail_bad_deduction)
+ return true;
+
+ if (L->DeductionFailure.Result != R->DeductionFailure.Result)
+ return RankDeductionFailure(L->DeductionFailure)
+ <= RankDeductionFailure(R->DeductionFailure);
+ }
+
// TODO: others?
}