Fix DXIL debugger hang if an unhandled DICompositeType is used

Zorro666 · Zorro666 · commit d729deec1c0b · 2026-01-24T08:17:04.000+13:00
There was an infinite loop if the unhandled debug data is mapped to a struct member
diff --git a/renderdoc/driver/shaders/dxil/dxil_debug.cpp b/renderdoc/driver/shaders/dxil/dxil_debug.cpp
@@ -8108,12 +8108,12 @@ const TypeData &Debugger::AddDebugType(const DXIL::Metadata *typeMD)
     case DXIL::DIBase::Type::CompositeType:
     {
       const DICompositeType *compositeType = base->As<DICompositeType>();
-      typeData.baseType = typeMD;
       switch(compositeType->tag)
       {
         case DW_TAG_class_type:
         case DW_TAG_structure_type:
         {
+          typeData.baseType = typeMD;
           typeData.sizeInBytes = (uint32_t)(compositeType->sizeInBits / 8);
           typeData.alignInBytes = (uint32_t)(compositeType->alignInBits / 8);
 

Original file line number	Diff line number	Diff line change
`@@ -8108,12 +8108,12 @@ const TypeData &Debugger::AddDebugType(const DXIL::Metadata *typeMD)`
`8108`	`8108`	`case DXIL::DIBase::Type::CompositeType:`
`8109`	`8109`	`{`
`8110`	`8110`	`const DICompositeType *compositeType = base->As<DICompositeType>();`
`8111`		`- typeData.baseType = typeMD;`
`8112`	`8111`	`switch(compositeType->tag)`
`8113`	`8112`	`{`
`8114`	`8113`	`case DW_TAG_class_type:`
`8115`	`8114`	`case DW_TAG_structure_type:`
`8116`	`8115`	`{`
	`8116`	`+ typeData.baseType = typeMD;`
`8117`	`8117`	`typeData.sizeInBytes = (uint32_t)(compositeType->sizeInBits / 8);`
`8118`	`8118`	`typeData.alignInBytes = (uint32_t)(compositeType->alignInBits / 8);`
`8119`	`8119`