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AST: Don't crash when computing identifier for an invalid extension.

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This commit is contained in:
Allan Shortlidge
2023-08-31 09:53:10 -07:00
parent de4370bba6
commit fb3972c2cc
1 changed files with 2 additions and 1 deletions
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3
lib/AST/FrontendSourceFileDepGraphFactory.cpp
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@@ -67,7 +67,8 @@ static std::string identifierForContext(const DeclContext *DC) {
const auto *ext = cast<ExtensionDecl>(DC);
auto fp = ext->getBodyFingerprint().value_or(Fingerprint::ZERO());
auto typeStr = Mangler.mangleTypeAsContextUSR(ext->getExtendedNominal());
const auto *nominal = ext->getExtendedNominal();
auto typeStr = nominal ? Mangler.mangleTypeAsContextUSR(nominal) : "";
return (typeStr + "@" + fp.getRawValue()).str();
}