TypeSystemSwiftTypeRef: Fall through if TypeSystemClang fails

to report Size/Align info and continue with the Swift language
runtime.

This would otherwise cause a fallback to SwiftASTContext and
a TypeSystemSwiftTypeRef/SwiftASTContext verification error.

Author: adrian-prantl

lldb/source/Plugins/TypeSystem/Swift/TypeSystemSwiftTypeRef.cpp

@@ -2830,7 +2830,8 @@ TypeSystemSwiftTypeRef::GetBitSize(opaque_compiler_type_t type,
       // pointer instead of the underlying object.
       if (Flags(clang_type.GetTypeInfo()).AllSet(eTypeIsObjC | eTypeIsClass))
         return GetPointerByteSize() * 8;
-      return clang_type.GetBitSize(exe_scope);
+      if (auto clang_size = clang_type.GetBitSize(exe_scope))
+        return clang_size;
     }
     if (!exe_scope) {
       LLDB_LOGF(GetLog(LLDBLog::Types),
@@ -4253,7 +4254,8 @@ TypeSystemSwiftTypeRef::GetTypeBitAlign(opaque_compiler_type_t type,
     // object pointer instead of the underlying object.
     if (Flags(clang_type.GetTypeInfo()).AllSet(eTypeIsObjC | eTypeIsClass))
       return GetPointerByteSize() * 8;
-    return clang_type.GetTypeBitAlign(exe_scope);
+    if (auto clang_align = clang_type.GetTypeBitAlign(exe_scope))
+      return clang_align;
   }
   if (!exe_scope) {
     LLDB_LOGF(GetLog(LLDBLog::Types),
@@ -4264,7 +4266,8 @@ TypeSystemSwiftTypeRef::GetTypeBitAlign(opaque_compiler_type_t type,
   }
   if (auto *runtime =
           SwiftLanguageRuntime::Get(exe_scope->CalculateProcess())) {
-    if (auto result = runtime->GetBitAlignment({weak_from_this(), type}, exe_scope))
+    if (auto result =
+            runtime->GetBitAlignment({weak_from_this(), type}, exe_scope))
       return result;
     // If this is an expression context, perhaps the type was
     // defined in the expression. In that case we don't have debug

lldb/test/API/functionalities/progress_reporting/swift_progress_reporting/Makefile

@@ -1,5 +1,6 @@
 SWIFT_SOURCES := main.swift
-
+SWIFT_BRIDGING_HEADER := bridging.h
+SWIFT_PRECOMPILE_BRIDGING_HEADER := YES
 LD_EXTRAS := -L. -linvisible
 SWIFTFLAGS_EXTRAS := -I.
 

lldb/test/API/functionalities/progress_reporting/swift_progress_reporting/bridging.h

@@ -0,0 +1 @@
+struct FromBridgingHeader {};

lldb/test/API/functionalities/progress_reporting/swift_progress_reporting/main.swift

@@ -4,6 +4,7 @@ import Foundation
 func main() {
   let boo = Invisible.👻()
   let s = NSAttributedString(string: "Hello")
+  let b = FromBridgingHeader()
   print("break here")
 }