Getting an 'Invalid typeref' error from swift-reflection-dump

pookjw · January 22, 2025, 4:28pm

I built swift-reflection-dump using swift-6.0.3-RELEASE to dump a SwiftUICore binary, but I'm getting an 'Invalid typeref' error from output. How can I resolve this?

 /Volumes/Untitled/build/Ninja-RelWithDebInfoAssert/swift-macosx-arm64/bin/swift-reflection-dump --arch=arm64 /Library/Developer/CoreSimulator/Volumes/iOS_22C150/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS\ 18.2.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/SwiftUICore.framework/SwiftUICore > ./SwiftUICore.txt

__C.CGVector
------------
dx:  with unmangled suffix "\x02u\xC1\r\0"
!!! Invalid typeref: u¡
 - TypeDecoder.h:1499: Node kind 221 "u¡
" - unexpected kind
dy:  with unmangled suffix "\x02u\xC1\r\0"
!!! Invalid typeref: u¡
__C.CGAffineTransform
---------------------
a:  with unmangled suffix "\x02u\xC1\r\0"
!!! Invalid typeref: u¡
 - TypeDecoder.h:1499: Node kind 221 "u¡
" - unexpected kind
b:  with unmangled suffix "\x02u\xC1\r\0"
!!! Invalid typeref: u¡
 - TypeDecoder.h:1499: Node kind 221 "u¡
" - unexpected kind
c:  with unmangled suffix "\x02u\xC1\r\0"
!!! Invalid typeref: u¡
 - TypeDecoder.h:1499: Node kind 221 "u¡
" - unexpected kind
d:  with unmangled suffix "\x02u\xC1\r\0"
!!! Invalid typeref: u¡
 - TypeDecoder.h:1499: Node kind 221 "u¡
" - unexpected kind
tx:  with unmangled suffix "\x02u\xC1\r\0"
!!! Invalid typeref: u¡
 - TypeDecoder.h:1499: Node kind 221 "u¡
" - unexpected kind
ty:  with unmangled suffix "\x02u\xC1\r\0"
!!! Invalid typeref: u¡

pookjw · January 23, 2025, 1:26am

@Kyle-Ye Any idea about this? Thanks.

Kyle-Ye · January 23, 2025, 2:32am

Looks like you are encountering an error when decoding the CGAffineTransform and CGVector's property type

github.com/swiftlang/swift

include/swift/Demangling/TypeDecoder.h

6a862d2eb


      
                  genericArgs.emplace_back(genericArgsBuf.data() + start,
                                           end - start);
                }
                
                return Builder.resolveOpaqueType(descriptor, genericArgs, ordinal);
              }
              // TODO: Handle OpaqueReturnType, when we're in the middle of reconstructing
              // the defining decl
              default:
          
                return MAKE_NODE_TYPE_ERROR0(Node, "unexpected kind");
              }
            }
          
          private:
            template <typename Fn>
            std::optional<TypeLookupError>
            decodeTypeSequenceElement(Demangle::NodePointer node, unsigned depth,
                                      Fn resultCallback) {
              if (node->getKind() == NodeKind::Type)
                node = node->getChild(0);

And TypeDecoder does not handle the 221 case here.

I'm not familiar with the logic too. Maybe you can try to add another case logic here to just ignore the 221 Node kind (Seems to be SpecializationPassID)?

Kyle-Ye · January 23, 2025, 2:33am

Also what is the corresponding SDK's SwiftUICore you are trying to dump? iOS 18.0 Beta X or iOS 18.X?

pookjw · January 23, 2025, 2:47am

I am trying with iOS 18.2 Simulator.

pookjw · January 23, 2025, 2:51am

Thanks. It seems that TypeDecoder.decodeMangledType doesn't handle all node types. This error occurs because NodeKind::Suffix is not handled. I'll look into it.